DESIGN BASIS REPORT - WAPCOS Limited

WAPCOS LIMITED REDEVELOPMENT OF STAFF COLONY AT MODEL TOWN, NEW DELHI

VOLUME III DESIGN BASIS REPORT Page 1

DESIGN BASIS REPORT

FOR ARCHITECTURAL WORKS

PROPOSED RE-DEVELOPMENT OF STAFF COLONY

NORTH DELHI MUNICIPAL CORPORATION

AT

MODEL TOWN

NEW DELHI



INDEX

S.No. Content Page No.

1 Introduction 3

2 Site study & photos 4

3 Design Criteria 4

4 Site plan and Area calculation 7-8

5 Typical Architectural features details 9

6 Green building measures 15



INTRODUCTION

New Delhi is proud of being the greenest metropolitan in India, yet it is one of the most polluted city, therefore becoming unhealthier day by day. Delhi is a blend of old and new heritage, which is very much visible, when one moves around the city. The local governing bodies have developed colonies to accommodate their staff. Model town is one such colony where North Delhi Municipal Corporation (NDMC) has accommodated its staff. Now due to the increased demand, NDMC has entrusted WAPCOS to redevelop this colony with the increased demand. To achieve this, the existing G+3 structures which are in a bad condition are to be demolished and new residential and infrastructure development as the MPD-2021 is proposed. The site, owned by MCD, having an area of 23. 5 Acres is proposed to achieve a higher FAR of 3 as per the redevelopment guidelines. A key factor is MCD’s and WAPCOS’s ambition to come up with a solution that could become a model of best practices both in India and internationally.

SITE STUDY The proposed redevelopment of NDMC staff colony at Model Town is located at a very prominent location in Delhi, with connectivity to Majlis Park metro station and other central business districts. The environment is very dynamic where prominent buildings include, Shastri market, monastery market, SDM office, Adarsh nagar police station and monument like Sheesh Mahal, gateway of Badli ki Sarai and Peer baba ki Mazaar. The site is located on Arihant Marg near Majlis Park metro station. It has a green buffer on the



North, Queen Mary and Srijan School on the east, Arihant marg on the west side and Rajeshwar colony on the south. There are many existing trees including old large trees. An effort has been made to preserve and retain these and transplant other within the site to a new location. Site Photographs

Photos showing existing condition6 of the residential quarters, surroundings of residences and connectivity between the spaces of the MCD colony.

DESIGN CRITERIA Project components in the master planning of the Project shall be as per MPD-2021 Redevelopment which may be as follows:

Total plot area 95155 SQM Ground coverage 33.33 %( 31715.16 SQM) F.A.R. 3.0 (285465 SQM) Residential: 80% Max (228372 SQM) Office/Commercial: 10% Min (28546 SQM) Civic / Recreational: 10% Min (28546 SQM) Total car parking required 5635 ECS

Total car parking provided 6082 ECS (INCL. 277 ECS IN STACK PARKING IN COMMERCIAL TOWER)



Provision for residential accommodation for economically weaker sections (EWS) will be excluded as per guidelines of MPD-2021.

RESIDENTIAL TOTAL UNITS

TYPE -II 188

TYPE -III 656

TYPE-IV 824

TYPE-IV S 78

TYPE-V 192

PROPOSED DWELLING UNITS 1938

TOTAL AREA SUMMARY

S.NO. BUILDING/ TOWERS TOTAL BUA AREA

1 TYPE - V 55,485.010

2 TYPE - IV 1,55,495.372

3 TYPE - IV S 16,073.741

4 TYPE - III 82,787.080

5 TYPE - II 21,845.738

6 CLUB - 01 2,573.506

7 CLUB -02 2,217.356

8 COMMERCIAL 49,489.370

9 BASEMENT 1,95,604.665

10 SWACHH BHARAT TOILET COMPLEX

113.700

TOTAL BUILT UP AREA 5,81,685.538

NOTE : ALL THE AREA MENTIONED ABOVE ARE IN SQ. MTS.

RESIDENTIAL TOWER DETAILS

NAME STOREYS DWELLING UNITS/ FLOOR

TOTAL DWELLING

UNITS/ TOWER

HEIGHT TO TERRACE TOP OF SLAB IN

MTR. FROM INTERNAL

ROAD

NO. OF TOWERS

BUILT UP AREA (SQM)

TOWER T-01 & T-03

S+22 1ST TO 18TH FLOOR = 3 UNITS

124 72.45 2 35,694.58

19TH TO 22ND FLOOR = 2 UNITS

TOWER T-02


68 78.75 1 19790.43

19TH & 20TH = 1 UNIT

21ST TO 24TH = 3 UNITS



TOWER T-04

G+19 GROUND & FIRST FLOOR = CLUB-01

74 66.15 1 13110.53

2ND TO 17TH FLOOR = 4 UNITS

18TH TO 20TH FLOOR = 3 UNITS

TOWER T-05, T-06, T-07, T-08 & T-14


390 66.15 5 74359.17

19TH & 20TH = 3 UNITS

21ST TO 22ND = 4 UNITS

TOWER T-09 & T-10


188 78.75 2 35435.892



Tower T-11 & T-12


172 72.45 2 32589.78


Tower T-13


78 66.15 1 16073.741


Tower T-15, T-16, T-23 & T-24


312 66.15 4 39502.896


Tower T-17, T-18, T-21 & T-22


344 72.45 4 43284.184


21ST TO 22ND = 4 UNITS

Tower T-19 & T-20


188 78.75 2 21845.738



TOTAL 1938 3,31,686.94

AN EXEMPLARY REDEVELOPMENT PROJECT Based on available Height Limit from Aviation Authorities, we have to plan within an overall

height limit of 153 m, and the project is planned accordingly.



1. A Smart District:

The development should be based on 'Smart City' concept based on 'smart mobility', 'smart living' and 'smart infrastructure' with the following key features:

1) Smart Economy a. Market-responsive development. b. High Quality of life to young professionals c. Affordable space for entrepreneurs, young professionals d. Flexibility in use to respond to changing needs of people e. Technology based enforcement f. Citizen empowerment through information and Wi-Fi enable public spaces g. Community-based management h. Financially viable maintenance models i. Citizen based management/feedback loops to government

2) Smart Mobility & Smart Living I. Reduced travel demand via mixed land use II. More public transport & non-motorized transport (NMT) use prioritization

III. Walking would be a safe, pleasant activity during both peak hours IV. IT-enabled parking management V. Affordable housing and affordable travel VI. Female safety through design features

The new area will also include recreational areas such as a sculpture park, Landscape Park, food courts/plazas, nature parks etc., also some social infrastructure and medical facilities.

3) Orientation The proposed site is oriented in north east-south west axis and north west-south east axis, is

constructed which is an ideal condition for natural light to be harvested as the building naturally facing north & west direction.

Site plan



AN “INTEGRATED SITE DESIGN”,

DESIGNED BY PRESERVING EXISTING TREES / TEMPLE & ASHRAM

MAINTAINING HEALTHY AND SUSTAINABLE BUILT ENVIRONMENT OF THE CITY

A NEW, CONTEMPORARY ICON IN NORTH DELHI

DIFFERENT TYPE OF DENSITIES YET OVERALL MASTERPLAN LOOKS AS ONE

SECURED MULTIPLE ENTRY EXIT INTO THE SITE

COMMERCIAL AND TYPE V ALONG MAIN ROAD - A LANDMARK IN A SEQUENCE

LEISURE PARK FOR SENIOR CITIZEN AND CHILDREN PLAY AREA

DEDICATED TOT-LOTS FOR EVERY CLUSTER

CLUB WITH BANQUET HAS INDEPENDENT ENTRY / EXIT

OTHER FACILITIES SUCH AS DISPENSARY, PRIMARY & SECONDARY SCHOOL PROVIDED

TO MAKE IT SELF SUFFICIENT HOUSING COMPLEX

THE SEARCH FOR OPEN SPACES – PLANNED VERTICAL

MODULAR FURNITURE FOR KITCHEN AND BED ROOMS

FUSING ART AND ARCHITECTURE TO CREATE HEALING SPACES

ART & ARCHITECTURE ARE FORM OF CREATIVE EXPRESSION AND PERSPECTIVE.

THE INTEGRATION OF ART INTO ARCHITECTURE OF THIS HOUSING COMPLEX IN FORM OF INSTALLATIONS OR WALL ART WILL ELEVATE AND ENHANCE THE BUILT ENVIRONMENT OF THE ENTIRE COMPLEX.



TYPICAL ARCHITECTURAL FEATURES AT ROOF LEVEL

TYPE-II, III & TYPE –IV



TYPE-V



COMMERCIAL TOWER

Typical facade treatment for multilevel parking



Typical terrace level treatment

ETFE fabric covering over Atrium (Commercial tower)



SEGREGATED TRAFFIC The layout combines a radial and concentric system of streets and boulevards which allow for segregated traffic making sure public transportation and pedestrians are the priority. While the roads and pedestrian boulevards merge in the Plaza areas, the front concentric ring alternate routes for the vehicles into distinctive plots. Two wheelers, cars and bicycles use their own itineraries improving efficiency and safety.

SAFETY AND ACCESSIBILITY All open areas are accessible independently of their public or private nature. However, if desired, the courtyards and the commercial streets can be closed for safety reasons at night time. Hedges can be used to demarcate plots for MCD, Income Tax Department & Other Residential Areas PEDESTRIAN EFFICIENCY The pedestrian system allows for shorter routes from the metro stations, Bus Stands. BUILDINGS CONFIGURATION All Buildings in the complex comply within the height cap and the streets with the subsequent width requirement. As for the towers, they are laid out in the most optimal way to diminish visual obstruction while benefit from their 4 orientations. The Iconic Towers (Type V) & Commercial Tower are also configured in a way to ensure maximum daylighting.

PARKING Most parking spaces in the complex will be underground. All tenants will have easy access parking spaces within their own blocks. Street level parking will only be for visitors, handicap two wheelers and bicycle tracks. Stilt and Podium Level Parking will be made with respect to the existing

vegetation.

WASTE MANAGEMENT SYSTEM



CONSERVATION OF WATER





GRIHA RATING



STRUCTURE DESIGN BASIS REPORT (DBR)

WAPCOS LIMITED REDEVELOPMENT OF STAFF COLONY AT MODEL TOWN NEW DELHI


INDEX

1 STRUCTURE

Site Plan & Section 21-22

1. Introduction 23

2. Structural Design 24

2.1 Structural System 24

2.2 Design Approach 24

2.3 Foundation System 25

3. Material Dead Loads 25

4. Live Loads 26

5. Earthquake Loading 27

6. Response Under Seismic Conditions 28

7. Regular and Irregular Configuration of Building 28

8. Wind Load 28

9. Temperature Load 29

10. Materials 29

11. Design Limit States 29

13. Load Combinations 30

13. Requirements for Durability & Fire 31

13.A Water Proofing Specification 32

14. Design Codes, Standards and Reference Documents 32

15. Design Reference & Hand Books 33



****

The concept drawings and Design Basis Report (DBR) are indicative and for reference only. The EPC Contractor is required

to work out the drawings and DBRs with the help of expert team and get it approved from EPC Consultant for execution works.



DESIGN BASIS REPORT FOR

STRUCTURE WORKS



SITE PLAN



SECTION



1. INTRODUCTION

GENERAL PROJECT INFORMATION

PROJECT TITLE: REDEVELOPMENT OF STAFF COLONY AT MODEL

TOWN

LOCATION OF THE PROJECT: NEW DELHI

DESCRIPTION OF THE PROJECT:

■ Type of Buildings: RCC framed structure

The buildings on site are primarily divided into several blocks The description of current scope of work along with no. of floor is given below-

S. No. Type of Towers No. Of Towers No. of Floors

1. RESIDENTAIL TOWERS

1.a TYPE- V 3 3B+S+24/22

1.b TYPE - IV 10 3B+G+19/S+24//22/20

1.c TYPE - III 8 3B+S+22/20

1.d TYPE- II 2 3B+S+24

1.e TYPE- IV S 1 3B+S+20

2. COMMERCIAL BUILDINGS

2.a RETAIL / OFFICES /BANQUETS 1 3B+G+26

2.b SERVICE BLOCK 1 3B+G

2.c CLUB BUILDING 2 a) B+G+1 b) G+1



2. STRUCTURAL DESIGN

The main considerations for the design of structure should be as follows:-

(a) Structure safety, serviceability and functionality.

(b) To meet the demands of aesthetics conceived by the architect. (c) Availability of material, equipment and expertise. (d) Constructability and ease of maintenance. (e) Durability.

2.1 STRUCTURAL SYSTEM

RCC framed structure shall be designed as follows:

Tower Area(Residential) - Structure system shall be R.C.C Shear walls - With SMRF and monolithic with slab and

beams Non- Tower area - Structure system shall be SMRF with

Columns, - Beams & Slabs.

Commercial Tower - R.C.C SMRF with Shear wall as dual structure

All the structures shall be designed in accordance with the relevant latest Indian Code of Practice for civil works i.e. IS 456, IS 875, IS 1893, IS 4326, IS 13920 ,IS 16700 etc. No expansion joints shall be provided between tower and Non- Tower area as Non tower area will be treated as backstay for the towers as per IS code 16700. It has been avoided in Non-tower area as it is an underground structure and to avoid unnecessary leakage caused by various structural joints and accordingly temperature loads at ground floor shall be considered for analysis and design.

2.2 DESIGN APPROACH

Structural Modeling: Three-dimensional model of building shall be generated using latest versions of structural design software STAAD-Pro. All the columns and Beams will be idealized as Line Elements. All the shear walls will be idealized as plate / shell element. The structure shall be analyzed and designed for all possible combinations of gravity loads (dead and live loads), and lateral loads (earthquake load, wind loads and temperature loads as per applicable/ relevant BIS Codes).

Computer Models, Structural Analysis and Design

A preliminary three dimensional computer model will be formulated, incorporating all gravity, wind and seismic loads using Response Spectrum Method, to develop the concept framing for the building and ensure that the designed structural system provides satisfactory global building response. The model will be further developed during subsequent design stages to carry out detailed design. In general, the following software shall be utilized during the various stages of the design process.



Software's Description

STAAD Pro -V8i/Latest 3 - Dimensional FEM Software for Building Analysis & Design AutoCAD

AutoCAD Software for Drafting and Detailing

2.3 FOUNDATION SYSTEM

■ As Per soil report piled raft foundation will be provided below both residential and commercial tower area.

■ For non- tower area pile foundation with isolated pile caps will be provided. Grade slab will be provided to counteract the buoyancy forces arising due to high water table which will be connected with pile caps.

■ The proposed foundation system is indicative and for reference only. The contractor will have to do extensive soil investigation and get approved from the client before the final detailed design.

■ Design of Water Retaining Structures - All water retaining structures, including raft slab, basement walls shall be designed as per IS 456 & 3370, with allowable crack width for severe or very severe exposure. In addition, water proofing of such structures to be carried out using appropriate technology.

■ Foundation and Ground Retention System - Geotechnical Information and recommendations is based on the Geotechnical Report which has been provided by the soil consultant. It may be noted that the Contractor shall carry out his own Soil Testing and analysis and shall follow more severe of the two.

■ Deep excavation requires proper shoring which shall be ensured by introducing suitable retention system like contiguous piles, soldier piles etc.

3. MATERIAL DEAD LOADS

All the permanent loads on the structure shall be applied as dead load. The dead load in a building shall comprise of self-weight of beams, columns, walls, partitions, floors, roofs and include the weight of all other permanent constructions in the building and shall conform to IS: 1911 Schedule of unit weights of buildings material. Unit weight of various materials considered on the structural members considered follows:-

IS: 875 Part I

S. No. Item Density (t/m3)

1. Concrete 2.50

2. Steel 7.85

3. Saturated Soil 2.0



4. Water 1.0

5. Glass 2.6

6. Aluminum 2.7

7. 115mm Brick Work with 12/15 mm Plaster 0.26 T/m2

8. 230mm Brick Work with 12/15 mm Plaster 0.49 T/m2

Following loads shall be considered in structure for analysis:-

I) Self-wt. of structure.

II) Slab thickness and floor finish - as per actual.

III) Filling for sunken areas.

IV) Any other loads envisaged during the detailed engineering.

V) Wall loads - as per actual.

VI) Landscape load: A minimum of 750 mm thick sweet earth filling shall be taken at ground floor level for non-tower area.

4. LIVE LOAD

Live loads on the entire floor shall comprise all loads other than dead loads. The minimum live loads on different occupancies shall be considered as per IS 875 (Part 2).Live load shall be considered in design as per Table 1 of IS: 875 (Part 2) as follows:-

Building Type U.D.L CONCENTRATED LOAD

Residential Building

Bed Rooms & Drawing rooms 0.2 T/m2 0.18T

Staircases & Corridors 0.3T/m2 0.45T

Balconies 0.3T/m2 0.45T

Lift machine Room 1.0 T/m2 0.45T

Staircase Mumty 0.2 T/m2 0.18T



Retail Building

Office Rooms 0.3 T/m2 0.27T

Retail Shops 0.4 T/m2 0.36T

Banquet Halls 0.5T/m2 0.36T

Corridors, Staircase & Lobby 0.5 T/m2 0.67T

Restaurants & cafeteria 0.4T/m2 0.45T

Kitchen 0.3 T/m2 + light weight filling density not

exceeding 1.0T/m3

Toilets and bathrooms 0.2 T/m2 +light weight filling density not exceeding

1.0T/m3

Terrace Floor (Accessible) 0.3 T/m2

Parking 0.5 T/m2 0.9 T

Non Tower Area

Fire tender load for 60Tcapacity vehicle as two point load / UDL of 1000 Kg/ sq

m is considered.

5. EARTHQUAKE LOADING

The structure is to be designed for the minimum static and seismic base shear set out by IS 1893 (Part 1) latest using the parameters shown in the table below:

Design Earthquake 10% chance of being exceeded within a 50 year return period

Seismic Zone Zone IV

Seismic Zone Factor, 'Z' 0.24

Soil Profile As per soil Report

Importance Factor I 1.2 ( for Towers other than Commercial Block) 1.5 for Commercial Block

Response Reduction

Factor R 4

[For Shear Walled Residential Buildings- All members (shear walls, columns, beams etc.) shall be made ductile as per IS

13920-2016 and other relevant codes].



Response Reduction Factor R

5 ( For Commercial and Basement)

Damping

2% for wind loads 5% for seismic loads

Response spectrum method used as per IS: 1893 (Part-1) latest with the following data:

Occupancy of building Residential/ Commercial

Fundamental Period of Vibration

T = 0.09h /sqrt(d)

Seismic Building Weight To include all components of Self Weight,

Superimposed Dead Load, any other permanent weight and 25%/ 50% of Live Load

In X & Z Direction: Design horizontal seismic coefficient (Ah) = Z * l * (Sa)

2 R g In Y Direction:

Design Vertical seismic coefficient (Ah) = (2/3)*{ Z * l * (Sa)}

2 R g

6. RESPONSE UNDER SEISMIC CONDITIONS

Seismic analysis of structure shall be carried out by response spectrum method for the design of beam elements (Columns, Beams & Shear Walls) as required.

7. REGULAR AND IRREGULAR CONFIGURATION OF BUILDING

Irregularities of buildings (Residential and Commercial) wherever applicable has to be treated according to clause 7.1 Table 5 & 6 IS 1893:2016

8. WIND LOAD

8.1 The wind load shall be taken as per IS: 875 (Part-3) - 2015 and wind pressure calculation done as follows:-

Pz = 0.6 Vz^2 KN/sq.m Vz = K1 K2 K3 K4 Vb, Where, Vz = Design wind velocity Vb = Basic wind speed = 47m/s K1,K2,K3 & K4 = As per latest IS Codes ( IS 875(part 3)) & other relevant codes With updated amendments.



9. TEMPERATURE LOAD

If the length of the buildings is more than 45m building shall be analyzed for thermal effects induced due to seasonal and diurnal temperature variations.

9.1 A temperature variation of 24°C (to be confirmed from IMD or any other authentic organization) shall be considered for the buildings

9.2 As per IS code, following load cases has been considered for thermal effects.

1.5(DL + TL)

1.5(DL + LL + TL)

1.5(DL±EQ+ TL)

1.2(DL + LL±EQ + TL)

1.2 (DL + LL ± WL + TL)

TL = Temperature load due to temperature

variation.

10. MATERIALS

Concrete: Concrete mix of M30 –M50 conforming with IS: 456 and CPWD specifications are used which should be properly designed by the contractor. A minimum M30 grade of concrete shall be used for Tall Structures and water retaining structures. Steel Reinforcement: Fe 500 D Grade (TMT bars). However, the maximum stress for the design of stirrups shall be taken as 415N/sq mm. Reinforcement bars shall be conforming to IS: 1786, IS456, IS13920, IS16700, etc. (latest version with updated amendments). Structural Steel: E350, E250 grade of steel confirming to IS: 226, IS: 2062.

11. DESIGN LIMIT STATES

The Limit state design method is used for the structural design of concrete member. For design of the individual members, loads are combined in accordance with the loading combinations specified in IS 875 to achieve the respective limit state. These are listed below:



S. No. Dead Load Live Load Earthquake/Wind load

1 1.5 1.5 —

2 1.2 1.2 1.2

3 1.5 — 1.5

4 0.9 — 1.5

12. LOAD COMBINATIONS

1. 1.5* (DL + LL)

2. 1.5 * (DL+/-EQX+/-0.3EQY) 3. 1.5 * (DL+/-EQZ+/-0.3EQY)

4. 0.9* (DL+/-1.5(EQX+/-0.3EQY))

5. 0.9 * (DL+/-1.5(EQZ+/-0.3EQY))

6. 1.2 * (DL+LL+/-EQX+/-0.3EQY)

7. 1.2 * (DL+LL+/-EQZ+/-0.3EQY)

8. 1.5 * (DL+/-WLX)

9. 1.5 * (DL+/- WLZ)

10. 0.9* (DL+/-1.5WLX)

11. 0.9* (DL+/-1.5WLZ)

12. 1.2* (DL+LL+/- WLX)

13. 1.2* (DL+LL+/- WLZ)

For non-orthogonal Columns following additional load combination shall be used in the design.

14. 1.2*(DL+LL+/-EQX+/-0.3EQY +/-0.30EQZ)

15. 1.2*(DL+LL+/-EQZ+/-0.3EQY +/-0.30EQX)

16. 1.5*(DL+/- EQX+/-0.3EQY +/-0.30EQZ)

17. 1.5*(DL +/-EQZ+/-0.3EQY +/-0.30EQX)

18. (0.9*DL) +1.5(+/-EQX+/-0.3EQY +/-0.30EQZ)

19. (0.9*DL) +1.5(+/-EQZ+/-0.3EQY +/-0.30EQX)

Notations DL = Dead Load LL = Live Load EQX = Earthquake Load in X-direction EQY = Earthquake Load in Y-direction EQZ = Earthquake Load in Z-direction WLX = Wind Load in X-direction WLZ = Wind Load in Z-direction



Whereas X & Z are two principal axis As per IS 875 part-5,IS 456,IS1893 & other relevant codes ( latest version with updated amendments).

*Combinations shown are minimum, Additional load combinations shall also be taken as per IS 1893-2016 and other relevant codes for the structural analysis.

13. REQUIREMENTS FOR DURABILITY AND FIRE

Concrete cover requirements is governed by Indian Code. The values in the following table shall be appropriate for a fire rating of 2 hours.

The following classification also applies in the design of structural elements:-

Exposure Classification

Members in contact with the ground Moderate or severe as per site condition

Members in interior environments moderate

Members in above-ground exterior environments Moderate

In general, adopting the minimum concrete strengths and reinforcement covers shall ensure the durability and fire resistance of concrete elements. Values shown on the drawings shall not be less than the following:-

Element/Location Minimum Cover (mm)

Minimum thickness (mm)

Minimum fck(used)

Cast In Place Concrete

1. Concrete cast against and permanently exposed to earth

50 200 30

2. Concrete exposed to weather and not in contact with ground (moderate)

a) RC slabs 25 125 30

b) RC walls 25 200 30

c) RC beams 30 200 30

d) RC columns (Ties) 40 300 30

Minimum concrete mix is M30 as per IS 16700



Minimum thickness of RCC wall (shear wall/retaining wall shall be 200mm for Tower & Non Tower Area.

14. A) WATER PROOFING SPECIFICATION’S

Water proofing material and process of laying, protection and maintenance as per technical specification.

a. Basement Membrane Water Proofing of HDP 1.2mm ( Laid Continuously)

b. Roof / Terrace without insulation (For Residential Tower)

EPDM 1.52mm+ Heat reflecting white glazed Tile

b. Roof / Terrace with insulation (For Commercial Tower)

EPDM 1.52mm+ Heat reflecting white glazed Tile

c. Sunken Floor of toilets & kitchen Polymeric cement coating

d. Podium for landscaping EPDM 1.52mm

* Please ensure non-puncturing of water proofing layer.

15. DESIGN CODES, STANDARDS AND REFERENCE DOCUMENTS

15.1 CODES, STANDARDS AND COMMENTARIES

S. No. CODE NAME

1. IS: 1893 Criteria for Earthquake resistant deign of Structures

2. IS :13920 Ductile detailing of Reinforced Concrete Structures subjected to Seismic forces.

3. IS: 4326 Earthquake resistant Design and construction of Buildings

4. IS: 875 (Part I to III &Part V) Code and Practice for Design Loads (Other than earthquake) for Building and Structures like Dead, Imposed, Wind and other Loads

5. IS: 456 Plain and Reinforced Concrete (Code of practice)

6. SP: 16 Design aids for Reinforced concrete Structure.

7. SP:34 Handbook on Concrete Reinforcement and Detailing



8. IS: 3370 Part I, Part II and Part IV

Code of practice for Concrete structures for the storage of liquids.

9. IS :1786 Specification for High Strength Deformed Steel bars and wires for concrete reinforcement

10. IS :1904 Code and Practice for design and Construction of Foundations in Soils

11. IS :2950 Code and Practice for Design and Construction of Raft Foundations

12. IS : 800 Code of Practice for general Construction in Steel.

13. IS : 16700 Criteria for structural safety of Tall Concrete Buildings

14. IS 2911 Code of practice for Design and Construction of Pile Foundation

15. NBC-2016 National Building Code of India - 2016

16. DESIGN REFERENCES AND HAND BOOKS

S.No. Name of Book Author

1 Reinforced Concrete Design W.H.Mosley

2 Foundation Analysis & Design

(4th Edition) Bowles

3 Foundation Design and

Construction Tomlinson

4 Concrete Structures Warner, Rangan, Hall & Faulkes (Longman,

1998)

5 Reinforced Concrete Designers

Handbook Fourth Edition, Reynolds & Steedman

6 Reinforced Concrete Design

(Second Edition) S Unnikrishna Pillai, Devdas Menon

7 Reinforced Concrete S. N. Sinha

8 Reinforced Concrete O. P. Jain

9 Design of steel structure P. Dayaratanam

10 Prestress Concrete Structure P. Dayaratanam



11 Handbook of concrete,

Engineering Mark Fintel

12 Properties of concrete A.M.Neville

13

Dynamic of Structures: Theory

and Application to Earthquake

Engineering Anil K. Chopra

14 Tall building structures: Analysis

and design B.S.Smith & Caull

15 Structural Analysis C.S.Reddy

NOTE: ALL THE CODES REFERRED TO/ USED SHALL BE OF LATEST VERSIONS

(WITH UPTO-DATE AMENDMENTS)



DESIGN BASIS REPORT FOR

MEP SERVICES



Table of Contents

SITE PLAN ............................................................................................................................................ 38 A.1 INTRODUCTION .......................................................................................................................... 39

HVAC SERVICES ................................................................................................................................... 39 B.1. INTENT ....................................................................................................................................... 39 B.2 SYSTEM REQUIREMENTS ............................................................................................................ 39

B.2.1 ASSUMPTIONS ....................................................................................................................... 39

B.2.2 CODES & STANDARDS ..................................................................................................... 41

B.2.3 MIN. ESTIMATED HVAC LOAD DEMANDS & PROPOSED SYSTEM ....................................... 42 Ventilation System: ........................................................................................................................... 44 B.3 SCOPE OF WORK ......................................................................................................................... 44 AHU Rooms :-.................................................................................................................................... 48 B.4 Building management system: ............................................................................................... 60

ELECTRICAL SERVICES .......................................................................................................................... 61 C.1 INTENT .................................................................................................................................... 61 C.2 SYSTEM REQUIREMENTS ........................................................................................................ 61

C.2.1 CODES & STANDARDS ..................................................................................................... 61

C.2.2 FORECASTED LOAD DEMAND ......................................................................................... 61

C.2.3 TRANSFORMER & DG SIZING ................................................................................................. 62

C.2.4 POWER DISTRIBUTION SCHEME...................................................................................... 72

C.2.5 DOWN LINE DISTRIBUTION ............................................................................................. 73

C.2.6 UPS .................................................................................................................................. 74

C.2.7 SOLAR PV SYSTEM ........................................................................................................... 74

C.2.8 EARTHING & LIGHTNING PROTECTION ........................................................................... 75

C.2.9 ELV SYSTEMS ................................................................................................................... 75 Telephone/Data/Video ..................................................................................................................... 75 Addressable Fire Alarm ..................................................................................................................... 76 CCTV (IP Based) ................................................................................................................................. 76 Video Door Phones & Boom Barriers (IP Based) .............................................................................. 76 Digital Voice Evacuation System ....................................................................................................... 77 Vehicle Management System ........................................................................................................... 77 C.3 SCOPE OF WORK ..................................................................................................................... 77

PHE SERVICES ...................................................................................................................................... 78 D.1 INTENT ................................................................................................................................ 78 D.2 SYSTEM REQUIREMENTS .................................................................................................... 78 D.2.1 ASSUMPTIONS .................................................................................................................... 78 Source of water ................................................................................................................................ 78 Population. ....................................................................................................................................... 79 D.2.2 CODES & STANDARDS ......................................................................................................... 79 D.2.3 WATER CALCULATIONS ....................................................................................................... 80 Summary of water demand norms ................................................................................................... 80 D.2.4 SWEAGE SYSTEM ................................................................................................................ 82 D.2.5 SOIL/WASTE/RAIN WATER DISPOSAL SYSTEM........................................................................ 85



D.2.4 MATERIAL FOR SANITARY FAUCET & ACCESSORIES ........................................................... 86 D.2.5 SOLID WASTE MANAGEMENT ................................................................................................. 86

FIRE PROTECTION ................................................................................................................................ 88 E.1 REFERENCE STANDARDS ............................................................................................................. 88 E.2 BASIS/ CONCEPT OF DESIGN ....................................................................................................... 88 E.3 Codes and Regulations ........................................................................................................... 89 E.4 FIRE EXTINGUISHERS .............................................................................................................. 89 E.5 AUTOMATIC SPRINKLER SYSTEM - QUARTZ BULB, 680C ........................................................ 89 E.6 WATER CURTAIN SYSTEM IN BASEMENTS ............................................................................. 89 E.7 WET RISER SYSTEM ................................................................................................................. 89 E.8 FIRE PUMPS ............................................................................................................................ 89 E.9 HYDRANT SYSTEM .................................................................................................................. 90 E.10 SCOPE OF WORK ................................................................................................................. 90



SITE PLAN



A.1 INTRODUCTION

The primary purpose of this report is to provide and describe a permanent record of the building systems. In addition to describing the systems, the fundamental assumption used for design is also outlined. This includes water demand usage, power demand and usage, occupancy and lightning level. This information is critical to ensure the contractor, other disciplines operator, and future designers understand the assumptions made and the limitations of the systems. Without this information, one has to guess at the designer’s line of reasoning during their design process. Throughout the design process, the basis of design needs to be consistent with the project intent. This report is based on the schematic design assumptions and will be modified as the project progress to the detailed levels of design. The project intent is shown in the basis of design; the designer transformed the project intent and challenges into reality.

HVAC SERVICES

B.1. INTENT Objective of HVAC is to provide thermal comfort, provide sufficient ventilation and to improve Indoor air Conditions to all areas of the Commercial Buildings for all occupants in an efficient and cost-effective manner. Temperatures and Indoor air quality shall be maintained in accordance with parameters as specified in the following section of Basis of Design and BMS system for monitoring and controlling the overall systems. The design approach shall be sensitive to environmental issues. The main thrust shall be laid on energy conservation, safety and ease of maintenance and current progressive technological developments. Buildings will be designed after understanding minute level of detailing and requirements of thermal comfort.

B.2 SYSTEM REQUIREMENTS

B.2.1 ASSUMPTIONS

This section of the basis of design documents specifies numbers used in the design of the Commercial space. These assumptions are an essential part of making the transition from the project intent to installed equipment and the codes are guidelines for the designer and contractor which are to be followed during the different stages of project.

a. Outside Design Conditions:

Description Value (units)

Latitude/Longitude 28.38°N, 77.13°E

Sea level 216 m

Clearness number 0.95

Summer outdoor air DB/WB temperature 43.3°C (109.94 °F) /23.89 (75.02 °F)

Winter outdoor air DB/WB temperature 7.2°C (44.96 °F) / 5.0°C(41.0°F)

Monsoon outdoor air DB/WB temperature 35°C (95.0°F)/ 28.3°C (83°F)



b. Inside Design Conditions:

The inside set points are considered on the basis of ASHRAE fundamental.

TEMPERATURE PROFILE INSIDE SPACES IN SUMMER

S.No. Area Description Inside Temp. Inside Relative Humidity

1 Commercial Building 23 ± 2 °C 55 ± 5 %

2 Club-1 23± 2 °C 55 ± 5 %

3 Club-2 23 ± 2 °C 55 ± 5 %

TEMPERATURE PROFILE INSIDE SPACES IN WINTER

1 Commercial Building 20 ± 2 °C 30 to 60%

2 Club-1 20 ± 2 °C 30 to 60%

3 Club-2 20 ± 2 °C 30 to 60%

c. Lighting Load

Considering heat Generation from lighting load for air conditioning and is as per the ASHRAE 90.1:

d. Fresh Air

Adequate fresh air quantity shall be provided to air-conditioned spaces to maintain Indoor air quality (IAQ) generally as per ASHRAE standard 62.1-2013.

e. Equipment Loads

Equipment load and will be according to electrical equipment used: ASHRAE / ISHARE And refer followings.

2.0 w/sqft for all shops

2.5 w/sqft for all shops

2.0 w/sqft Banquet

f. Building Envelope :

The building envelope should be comply GRIHA 3star rating manual and following measures can be taken.

For Residential Building

For Commercial Building & club

Roof 150 mm RCC + 75 mm XPS Insulation

Glass

U- value < 5.6 w/m2 k < 2 w/m2 k

Solar Heat Gain Coefficient < 0.45 < 0.25

Visible Light Transmition > 40% > 40%



B.2.2 CODES & STANDARDS

The applicable Standards/Codes are: (a) American Society of Heating, Refrigeration and Air-conditioning Engineers

(ASHRAE).

ASHRAE-55, Thermal Comfort

ASHRAE 90.1-2013

ASHRAE 62.1-2013

Fundamentals-2005

HVAC Application - 2007

HVAC System & Equipment - 2008

Refrigeration -2006

(b) Duct construction standards as per relevant BIS Codes & SMACNA standards

(c) Motor, Cabling Wiring, and accessories as per BIS codes

(d) Air Filter as per ASHRAE-52.1-1992 and 52.2-2007

(e) National Electric code

(f) National Fire code

(g) National building Code-2016

(h) NFPA Standards

The following IS codes shall be applicable:

S. No. Material/item of Work Standard/Code

1. Ducting Fabrication IS: 655 2. Galvanized Sheets/Wires IS: 277 3. Aluminum Sheets/Wires IS: 737 4. Horizontal Centrifugal Pumps IS: 6595 5. Mild Steel, ERW Pipes IS: 1239, IS: 3589 6. Pipe Fittings IS: 1239 7. Steel Pipe Flanges IS: 6392 8. Gate, Globe & Check Valves

Up to 40 mm Gun metal IS:778

Butterfly valve of 50 mm and IS:2906 Above (Cast Iron)

Balancing valve IS:778

Non Return valve IS:5312 9. Color Code for Identifications of pipes IS: 2379 10. 3 Phase induction motors IS: 325 11. Pressure and vacuum gauges IS: 3624 12. PVC insulated electric cables IS: 1554 13. Starters sheets/wires IS: 8555 14. Glossary of terms used in refrigeration and

Air-conditioning IS: 3615

15. Hot die zinc coated steel pipes IS: 4736-1968

16. Expanded Polystyrene IS: 4671

Safety codes

The following safety codes as laid down by ISI shall be followed:

1. Safety code for mechanical refrigeration IS : 660

2. Safety code for air-conditioning IS : 659

3. Safety code for scaffolding and ladders IS : 3696



4. Welding & cutting operations IS: 3696

5. Code of safety procedures and practices In electrical works IS: 5216

B.2.3 MIN. ESTIMATED HVAC LOAD DEMANDS & PROPOSED SYSTEM

Detailed heat load estimation sheet shall be prepared during detailed engineering stage for all the seasons (Summer/Monsoon/winter) in which, the specified conditions are to be maintained based on above design parameters considering minimum diversity of 80% for sizing of Chillers etc.

SUMMARY SHEET - AIR CONDITIONING

S. No.

Description Air conditioned Area

(Sq. m) Total cooling

TR Purposed System

1 Commercial Building

28467 2000 Water Cooled chiller

& Hot water Generator

2 Club-1 1320 85 Heat Pump

2 Club-2 3000 205

Total 35267 2290

Overall Cooling TR 2290

MINIMUM REQUIREMENT OF SYSTEM SELECTION: -

1. For Commercial Building (Water cooled chiller for cooling & Hot water Boiler for winter heating system)

As per the minimum design requirement, the total approximate load for commercial building comes out to be 2000TR and total diversified peak load after applying 80% diversity on 1600 TR (since external and internal loads do not peak at the same time).Minimum COP of the chillers shall be 6.3 on AHRI conditions as per ECBC+. Hot Water Generators will be used for winter heating system.

2. For Club Buildings (Air cooled Heat Pump for cooling and winter heating)

As per the minimum design requirement, the total approximate load for Club-1 & 2 comes out to be 175 TR & 115 TR respectively and considered @80% diversity. Minimum COP of the Heat pump shall be 4.2.

3. For Residence Buildings

Considered supply, installing & testing of copper pipes & Drain pipe for Dx-Type split air-conditioning unit.

SYSTEM DESIGN DESCRIPTION FOR COMMERCIAL BUILDING

It is proposed to provide a central air conditioning system to maintain the specified inside design Conditions during summer & monsoon for the proposed Commercial building.



Proposed Central Plant Minimum Capacity

1

Chiller capacity 4 x 550TR (3W+1S)

2 Cooling tower 4 Nos. 1650 USGPM (3W+1S)

3

Primary Pumps 4 Nos. 1320 USGPM (3W+1S)

4 Secondary Pumps 4 Nos. 1320 USGPM (3W+1S)

5 Condenser Water Pumps 4 Nos. 1650 USGPM (3W+1S)

6 Hot Water Generator 3 Nos. 600 kw (2W+1S)

Water cooled centrifugal chiller with VFD.

Primary & secondary chilled water pumps coupled with bypass line and variable speed drive on secondary pumps shall be provided to achieve variable water flow in chilled water circuit. Chilled water flow in load circuits shall be varied but the same through chillers shall remain constant. By measuring pressure differential between chilled water supply and return header, the speed of secondary chilled water pump shall be automatically varied, thus conserving pump brake horse power.

CTI certified cooling tower with VFD

Closed Type expansion tank & air separator shall be provided in chilled water pipeline in Plant Room. And a makeup water tank shall be installed at terrace.

Hot water Generator will be used for winter heating.

Floor and ceiling suspended chilled water air handling unit.

Energy recovery unit for reduce the building fresh air cooling load for commercial buildings.

SYSTEM DESIGN DESCRIPTION FOR CLUB BUILDING.

Proposed VRV Heapt pump for following building

Required total minimum HP.

1

Club-1 176

2 Club-2 126



VRV (Variable refrigerant volume) Heat Pump– VRV (Variable refrigerant volume) with inverter technology is proposed for providing cooling and heating inside the space during summer and winter with better indoor air quality. Individual Outdoor unit shall be designed for connecting the indoor unit. Very less diversity can be achieved in this system based on the floor operation. Provision for the installation of indoor and outdoor unit shall be designed and all unit shall be installed by tenant.

The VRV system designed is cooling and heating type to cater summer and winter load efficiently.

Less Space is required as outdoor unit can be placed on back side wall and indoor unit designed is ceiling suspended unit.

For fresh air used centralized treated fresh air unit for each floor.

Minimum COP shall be 4.2

Ventilation System:

Mechanical Ventilation System to be considered for Basements car parking area, Toilets, Kitchens, Laundry, Dining and Individual Floor Smoke Extraction & HVAC Plant Room, MGPS, Fire/WTP Pump House, STP/ETP Plant as per NBC 2016..

Emphasis on maintaining adequate Fresh Air supply, Removal/Exhaust of stale air, particulate matter, fumes and noxious gases.

Fan Design, selection and sizing in accordance with Provisions stated in NBC 2016, ASHRAE, ISHRAE, ECBC 2017 and Fire Bye-Laws.

B.3 SCOPE OF WORK The EPC Contractor shall carry out detail Design, Supply, Installation, and Testing &

Commissioning of HVAC Works and BMS works. 1. Ventilation & Air Conditioning System shall include Commercial, Club-1&2 buildings. 2. The entire HVAC works should conform to specifications provided & as per directions

of Engineer-in-Charge. 3. The ratings and capacities of various equipments are indicative and subject to

upgradation/ revision during detailed designing stage. 4. The scope shall include below mentioned features but not limited to:-

a. The design shall be done in accordance with Norms established by GRIHA for HVAC System design, provisions stated in NBC 2016, latest ECBC and conforming to the latest ISHRAE, ASHRAE and NABH Standards and CPWD standards.

b. Objective of HVAC System Design is to ensure proper Indoor Air Quality, Energy

Efficiency, Flexibility of Operation, Cost Optimization, BMS Compatibility c. The overall HVAC design shall be according to 3 star GRIHA rating manual.



d. Heat Load is to be computed for individual rooms of required buildings which are to

be air conditioned. All required parameters /factors like geographical location, orientation of building, ambient conditions, glazing factor, lighting/equipment load, occupant load, area & height of room, fresh air ACPH, CFM/person, ADP of coil, shall be considered as per ASHRAE/ISHRAE/NBC 2016/ECBC standards.

e. Equipment sizing of HVAC system shall take into account factors such as

geographical location, climatic conditions, water availability & quality etc. f. Chilled water pipes from HVAC Plant Room to various buildings shall be as per

CPWD specs. g. HVAC Plant Room shall be provided with safety equipment/items like suitable

elastomeric mat (as per relevant IS codes) for Panels, fire buckets, fire extinguishers, hand gloves, safety charts, framed Schematic/SLD etc.

h. Suitable size shafts, cutouts, openings etc shall be provided to facilitate installation of

Pipelines, Ducts etc. in all floor slabs of various buildings for various service areas, as required. All shafts, cutouts, openings etc provided on floor slabs shall be suitably closed after laying of services lines as per fire safety norms as per NBC 2016. Doors shall be provided for all shafts at all floors as per fire safety norms as per NBC 2016.

i. All Services as required like raw/ soft, drainage, plumbing, HVAC provisions, ducting

etc. shall be adequately provided by the EPC Contractor for all building 2. Indoor Air Quality : Emphasis on maintaining desirable Indoor Air Quality by setting and controlling

parameters of Temperature, Air Flow, Humidity Levels and Air Changes per Hour

(Total & Fresh Air) for each room/zone/area.

Conformity of Indoor Quality parameters with ISHRAE, ASHRAE and NABH

Standards.

3. Air Conditioning System: Centralized Chilled Water Air Conditioning System being considered for Commercial

building only.

Air cooled VRV system complete with outdoor & Indoor for club buildings.

Provision of energy efficient split units shall be considered in Server Rooms, UPS Room etc. Energy Efficient Split Air Conditioners with Inverter driven compressors (min. 5 star rated) may be considered wherever necessary depending upon the suitability and applicability.

All the equipments etc. shall be suitable for 415 V, three phases or 220 V, Single phase, 50 Hz A.C. supply.

The chilling machines shall be AHRI with ecofriendly refrigerant and with best possible COPs as per latest ECBC + code, Cooling tower shall be CTI Certified, Fans shall be AMCA certified for fan efficiency & Noise, Fire dampers shall be UL & CBRI Roorkee certified preferably with FM certification also.



In case of Chilled Water System Centrifugal Chillers with VFDs are proposed for Summer/Monsoon Cooling. The scope shall include Plant Manager.

The VRV/VRF System considered must belong to the latest Generation/Version with capability of Summer and Monsoon Cooling.

Including Secondary Chilled Water Pumps along with VFD, Primary Chilled Water Pumps and Condenser Water Pumps.

Provision of specialized equipment like Air and Dirt Separator/Dirt Separator /Descalar in the Plant Room to ensure smoother operation, enhanced efficiency of system and longevity.

Chilled Water Circuit comprising of MS pipes (“C” Class) with suitable Insulation in case of Centralized Chilled Water System and hard drawn copper tubes with suitable Insulation in case of VRV/VRF System.

GI pipes (Class B) for drain pipe with suitable insulation for chilled water system.

u-PVC Pipe for VRV/VRF/DX Split drain pipe to be provided.

All floor mounted AHU shall be variable speed type. FM AHU’s shall be with DIDW backward curved fans. VFD with electrical bypass arrangement to be provided.

Ceiling Suspended and Floor Mounted Air Handling Units, child water Fan Coil Units to Convey Chilled Air in case of Chilled Water System and Ductable/ Cassette / Hi Wall Split Units in case of VRV/VRF System.

Fresh air provision for ceiling suspended AHUs/FCUs/VRV/VRF (heat pump type) Indoor Units shall be considered as per relevant codes & standards. TFA (Treated Fresh Air Units) to be provided to supply treated chilled air to these units/feeding areas.

UPS room, BMS room, fire control room and server room shall be provided with DX split unit with N+1 combination.

Demand control ventilation system to be installed for fresh air system for commercial Building. Each fresh air outlet/ lovers for AHU shall be provided with CO2 sensor & motorized damper. Fresh air shall be fed to the AHU’s via VFD driven Energy recovery units and treated fresh air unit.

Closed type Pressurized Expansion Tank to adjust and regulate the pressure of water in the Chilled Water Circuit shall be provided

Ducting System comprising of GI Ducting with Insulation depending upon the requirement. Duct Construction and suspension Standards must conform to SMACNA, IS 655 and ASME.

CTI certified Cooling Tower with VFD driven Fan Motors complete with control and starter panel.

Chilled Water flow Modulation by means of Manual/Motorized Butterfly, Non Return Valve, Ball Valve, Automatic Balancing Valve, 2 WAY PIBCV with insulation. All the valves must be minimum PN16 rated and suitable for Chilled Water applications. Insulation of valves shall be the same as that of pipe.



Air Flow Modulation by means of Air Distribution devices like Volume Control Duct Dampers, Collar Dampers, VAV Boxes conforming to ASME and SMACNA Standards.

Colour scheme for equipment like Chillers/Pumps/AHUs/Cooling Tower etc. shall be as per manufacturer’s standard color scheme or as per directions of E-I-C.

The scheme of colour code painting of pipe work services for AC installation shall be as per NBC/CPWD specifications.

Provision of trap door of suitable material & size shall be considered for easy accessibility of moving parts of the concerned equipment/dampers.

BMS Compatibility to all Air Conditioning (3 phase equipment) High Side and Low Side Equipment.

Duct acoustic lining shall be provided up to 5mtr. Length of initial duct piece and all plenum.

ALL AHU’s room shall be acoustic lined on wall & ceiling and material shall be as per specification

All duct shall be insulated minimum 25 mm thick XLPE insulation as per specifications.

Fire damper shall be provided wherever required.

All AHU will be with MERV-13 filters while TFA AHU’s will be provided with ESP filter as per specifications.

BTU meters to be provided for shops, banquet and for all chillers.

All hvac equipment electrical starter panel which are located on terrace shall be IP-64.

Touch screen types central controller to be provide for faculty clubs with provision to ingrate the same on BMS.

6. General Design and Layout Considerations:

The Design and Layout Considerations for HVAC System in a Building must strictly conform to the provisions stated in NBC, ECBC and CPWD.

i. Plant Room Layout :- Building terrace shall be structurally designed to take loads of various plant room

equipment such as cooling tower. Also, dimensions of plant room shall conform to CPWD norms & other relevant codes so as to have proper distance between chillers/pumps/other equipment.

The HVAC Plant Room Layout must be planned in such a manner so that it enables easy movement of personnel to conduct daily routine and maintenance procedures. Additional space for circulation shall be considered as per relevant codes. Provision



shall also be kept for anticipated future requirements. Minimum clear height of plant room (approx. 4.5 m) shall be maintained as per relevant codes. The entrance to A.C plant room shall be preferably through rolling shutters having minimum width as per relevant codes.

Ventilation system shall be design as per NBC 2016.

Proper spacing must be ensured between the foundations of Pumps, Chillers and other equipment to enable repairs and easy replacement of parts.

The Plant Room must be adequately ventilated with Fans maintaining optimum Air Flow and ACPH level. The design and sizing of Fan must be in conformity with the CPWD & NBC 2016 norms for the same.

The Plant Room should have a fresh water connection & drain trap.

The floor shall have suitable drain with grating.

ii. HVAC Shaft :-

Sufficient number of shafts shall be provided so that piping length is optimized.

The HVAC Shaft must be adequately sized to enable smooth passage of pipes and ducts with insulation along with its supporting arrangement through it.

The walls of the HVAC Shaft must be lined with Fire Rated Material capable of withstanding 250 degree Celsius for a period of 2 hours.

Inspection Doors must be provided in HVAC Shaft wherever necessary. The door must be Fire rated capable of withstanding 250 degree Celsius for a period of 2 hours.

AHU Rooms :-

AHU Room slab shall be structurally designed to take loads of various equipment.

The AHU Room Layout must be planned in such a manner so that it allows easy movement of personnel to conduct daily routine and maintenance procedures.

AHU foundation shall be proper (PCC/RCC/Steel frame) in conformance to relevant standards. All measures shall be taken including providing vibration isolation pads etc. should be used to dampen noise generated at source itself.

AHU Room shall be acoustically insulated with suitable material (density, K value) as per CPWD provisions & site requirements.

AHU Room should have a fresh air opening, water connection & drain trap.

12. Brief Equipment Specifications (High Side): i. Chillers Chillers shall be Centrifugal.



Chiller Motors must be equipped with VFDs.

Water cooled Chillers shall be with open type / semi hermetic compressors with squirrel cage induction motor with class F insulation.

Chiller shall be Factory Assembled and Tested –AHRI certified.

Equipment shall meet or exceed minimum efficiency requirements of COP/ IPLV/ IKW per TR as per latest ASHRAE/ ISHRAE/ ECBC + Standards.

The total capacity of chillers shall be 2200TR ( 4Nos x 550TR ) (3W +1S)

Minimum requirement of both COP and IPLV requirement of ECBC /NBC provisions shall be met. Preferably, COP of min. 6.3 at AHRI conditions & IPLV, NPLV as per specifications.

The chiller capacity shall be as per following parameters:

Chilled Water Leaving Temperature: 44 Deg. F

Chilled Water Entering Temperature: 54. Deg. F

Chiller Fouling Factor: 0.0001 fps

Chiller Water Flow Rate: @2.4GPM / TR

Condenser Entering Temperature: 88 Deg. F

Condenser Leaving Temperature: 98 Deg. F

Condenser Fouling Factor: 0.0005 fps

Condenser Water Flow Rate: @ 3GPM/TR

COP at AHRI Conditions: min. 6.3

IKW/TR at 100% load at above duty conditions: 0.63 maximum.

Motors shall be energy efficient must conform to minimum IE-3 Class Efficiency.

Full compatibility with BMS System.

The scope shall include plant manager for optimizing plant room operation.

Both Working and Stand-by provisions for Chillers has to be considered. Minimum One Chiller shall be considered in addition to the no. of chillers as per requirements.

Refrigerant of chiller shall be CFC free & low ODP,(preferably zero ODP) and preferably should be R-134 a / R-514a.



ii. Outdoor units for VRV ( HEAT PUMP TYPE)

The Outdoor Units for VRV/VRF System (Heat pump type) have to be installed in a completely open space like Terrace etc. where it can easily discharge heat to the environment.

Outdoor unit foundation shall be proper (PCC/RCC/Steel frame) in conformance to relevant standards. All measures shall be taken including providing Cushy Foot mountings/vibration isolators etc. should be used to dampen noise generated at source itself.

Outdoor Units for VRV/VRF System must be factory assembled unit housed in a sturdy weather proof casing, conforming to IP 54 Standards constructed from rust-proofed panels of suitable material coated with a suitable finish material.

The outdoor unit shall have scroll /Rotary compressors. The compressor shall be of highly efficient hermetic scroll/ Rotary type and equipped with capacity control technology capable of changing the speed in accordance to the cooling & heating load requirement.

The heat exchanger shall be constructed with copper tubes mechanically bonded to aluminum fins to form a cross fin coil. The aluminium fins shall be covered by anti-corrosion resin film.

The refrigerant circuit shall include an accumulator, sub cooler, liquid and gas shut off valves and a solenoid valves.

The following safety devices shall be part of the outdoor unit: High Pressure Switch, Low Pressure Switch, Fan Motor Safety Thermostat, Inverter Overload Protector, Over Current Relay, Fusible Plugs, Fuses.

Min 80% Diversity Factor shall be considered while sizing of Outdoor Equipment for normal units & for TFA (treated fresh air unit) it should be at least 110% or as per manufacturers recommendation.

Each unit shall be equipped, with an oil recovery system to ensure stable operation with long refrigerant piping.

If the number of Outdoor Units is high, then they may be mounted and fixed on a specially fabricated MS Channel designed to accommodate all the Outdoor Units. The design and sizing of MS Channel may be done in accordance with relevant CPWD and ASME Standards. If the number of Outdoor Units is few, then they may be mounted on Individual Outdoor Unit Stands as specified and provided by OEM.

Proper spacing between Outdoor units must be ensured to enable adequate heat discharge area, smooth passage of personnel to conduct routine and maintenance procedures, repairs and replacement.

The plenum of the fan must be lined with Fire Rated Acoustic Material.

It should be ensured that proper level difference and spacing is maintained between the Fresh Air ducts and Normal Exhaust ducts to ensure smooth circulation of air.



ii. Refrigerant 1. Refrigerant selected must possess the following properties:

Low to zero Global Warming Potential

Low to zero Flammability

Low to zero Toxicity

Low to zero Flame Propagation

2. Depending upon the specific suitability and applicability, a desirable refrigerant may

be selected for VRV/VRF System. iii. Pumps 1. Chilled/ Condenser water pumps shall be End suction Vertical Split Casing/Horizontal

discharge type for ease of maintenance and rugged usage. 2. Suitable Pump Head shall be selected while sizing of pump depending upon the

piping length, fittings, friction factor etc. and other requirements. 3. Both Working and Stand-by provisions for Pumps has to be considered. Minimum.

One standby pump shall be considered in addition to the no. of working pumps as per requirements.

4. Pump casing shall be cast iron, impeller shall be bronze/gunmetal, shaft shall be of

Stainless steel with S.S mechanical seal. 5. The thermal insulation of Chilled/hot Water Pumps shall be with same material &

thickness as that of pipe. 6. Pump shall be complete with all accessories like pressure gauge, valves (butterfly,

NRV etc.), reducers (if reqd.), Strainers, flexible bellows (double arch PN 16 rating min.) etc.

7. Secondary Chilled Water Pumps will be with unit mounted Variable Speed Drives

circulating water in the chilled/hot water circuit. 8. Suitable Foundation (PCC/RCC) or as per OEM standards needs to be constructed

for mounting of these pumps along with anti-vibration pads. 9. Efficiency of Pumps shall be preferably 75% or as per ASHRE90.1 / ECBC. Motor

shall be TEFC Type, with Class F insulation. 10. Operating speed shall not exceed 1500 RPM. 11. Pumps must be Energy Efficient and the Motor shall be rated preferably for IE-3

Class Efficiency.



v. Cooling Towers 1. Cooling Towers must be CTI Certified. 2. The Cooling Tower Fan Motors shall be rated for preferably IE-3 rated and equipped

with VFDs. Each VFD shall be installed in a dedicated external IP-65 enclosure 3. Min Range of Cooling tower 10 degree F & wet bulb approach at least 5 degree F.

Cooling tower shall have fan controls based on wet bulb logic. 4. Cooling Tower shall be designed in such a manner that the total losses (drift +

evaporation + bleed off etc.) are minimized. 5. Cooling Tower shall be located at a well ventilated space either at ground

floor/terrace of plant room/terrace of building. In case cooling towers are located on the terrace of the building, the structural loading of terrace shall be considered. Cooling towers shall be installed preferably on columns (raised by 3 feet at terrace) so that load is transferred directly to columns. For this, MS sections/beams shall be provided. Sufficient space shall be left all around for efficient operation of cooling tower.

6. Depending upon suitability and applicability, Induced Counter Flow type may be

selected. 7. It should be complete with FRP (Fiber Reinforced Plastic)water basin, FRP casing,

distribution system, PVC filling with integral louvers, drift eliminators, spray nozzles or self-rotating sprinklers, statically , dynamically balanced axial flow type fan, HDG supporters and MS Painted ladders, make up quick fill arrangement, overflow & drain connections with necessary valves. It should be complete with cement concrete foundation, steel/masonry supporting structure, anti-vibration mountings etc.

8. Minimum. One Cooling Tower shall be considered in addition to the no. of working

cooling towers as per requirements. vi. Hot Water Generator 1. Electrically operated Hot Water Generators for winter heating. 2. For winter heating electrically heated HWG (Hot water generator) will be provided in

plant room. The Hot water will be supplied through secondary pumps with VFD. 3. Both Working and Stand-by provisions for Hot Water Generators has to be

considered. 4. Hot Water Vessel Construction must conform to relevant Standards and must be

insulated with Fiberglass/rock wool of suitable density and thickness and shall be suitably cladded.

5. Must have sufficient number of Heat Banks. 13. Brief Equipment Specifications (Low Side):- i. Air Handling Units (For Comfort Areas) – Waiting Areas, wards, Library, Auditorium

etc.



Factory fabricated Double skinned construction with Thermal Break Profile with GI Sheet of Suitable thickness (0.8 mm) pre plasticized outside & plain GI (0.8 mm) on inside with PUF Insulation of suitable thickness 40 mm and density (min. 48 kg/cum) between them. AHU may be floor mounted/ceiling suspended & should be of sufficient Tonnage, CFM & static pressure as per requirements.

Maximum flow velocity across filters/Fans/Coils, motor /fan speed etc. shall be in conformance to relevant standards.

Velocity & friction factor for Pipe Sizing shall be in conformance to relevant standards.

Volume control dampers to be provided in ducts as per requirements.

Fire Damper must be provided at the Supply and Return of AHUs room fire walls.

Motor must conform to preferably IE-3 Class Efficiency and must be Squirrel cage induction type.

All AHUs shall be equipped along with VFDs and electrical bypass arrangement to be provided.

Fan Blower should be DIDW backward Curved blade (Belt driven) for supply/exhaust. Fans must be selected for suitable Static Pressure & CFM & shall be AMCA Certified for sound & performance.

Cooling/Heating Coil of required OD & thickness preferably made of Copper with Fins preferably made of Aluminum with suitable fins/inch. Cooling/Heating Coils Row deep should be considered meeting the functional requirements.

Drain Pan of AHUs must be made of Stainless Steel of Suitable thickness(18 G) duly insulated with required thickness & density of insulating material & drain slope on both sides.

Suitable number of modulating valves like Butterfly/ Ball/ PICV/Drain etc. must be positioned at the inlet and Outlet along with other accessories like Thermometer, Pressure Gauge, Thermostat, and Humidistat etc. Strainers shall also be considered at the inlet of AHUs.

Suitable Foundation for Floor Mounted AHUs /Hanging Arrangement for Ceiling Mounted AHUs should be considered with anti vibration pads.

Fireproof double canvass connection should be considered.

The air handling units shall be powder coated in approved colour as per OEM standards or as per directions of E-I-C.

ii. Fan Coil Units

Must be preferably of GI powder coated construction of suitable thickness.

Fans must be selected for suitable Static Pressure.



Coil of required OD & thickness preferably made of Copper with Fins preferably made of Aluminum with suitable fins/inch. Cooling/Heating Coils Row deep should be considered meeting the functional requirements.

Motor must be energy efficient and must be 3 speed type. This shall consist of two lightweight aluminum impellers of forward curved type, both statically and dynamically balanced. The two impellers shall be directly mounted on to a double shaft, single phase multiple winding motor capable of running at three speeds.

Drain Pan of FCUs must be made of Stainless Steel (18 G) of Suitable thickness duly insulated with required thickness & density of insulating material.

The PREFILTER shall be cleanable type &of suitable thickness AL./HDPE wire mesh and mounted behind the pan in a filter plenum of GI sheet.

The fan coil units shall be powder coated in approved colour as per OEM standards or as per directions of E-I-C.

It should consists of 2-Way Modulating type valve, Y strainers, Ball valves, wall mounted BMS compatible thermostat containing three speed and on/off control for fan, speed and temperature control for summer/ Monsoon/winter air conditioning.

iii. Split Air Conditioner Units

Air cooled split air conditioner Unit comprising of an Indoor unit and outdoor Unit.

Must be Energy Efficient & refrigerant used should be CFC free & low, preferably zero ODP.

Refrigerant piping and fittings interconnecting compressor condenser shall be all copper and valves shall be brass / gunmetal construction.

Fan motor shall be suitable for 415 ± 10% volts or 230±10% volts, 50 Hz, A.C. Supply, Single phase, motors shall be provided with permanent capacitor. Motors shall be especially designed for quite operation and motor speed shall not exceed 1440 rpm.

Fan speed shall not exceed 1000 rpm and maximum fan outlet velocity shall be 550 meters per minute.

Cooling coils shall be of fin and tube type having aluminium fins firmly bonded to copper tubes assembled in zinc coated steel frame / Multi channel.

Inverter Driven Compressor Air Conditioner depending upon suitability and applicability. Non Inverter driven AC must conform to minimum 3 Star Rating.

iv. Pressurized Closed Type Expansion Tank

Pressurized Cold Water Closed Type Expansion Tank must be equipped with Air Separator & should be preferably mounted in the plant room.

The tank and air separator must be constructed in accordance with relevant standards.



The tank shall be preferably pre charged steel expansion tank with replaceable heavy duty butyl rubber bladder.

The expansion tank will be complete with safety relief valve, pressure reducing valve, pressure gauge & other accessories.

v. Chilled Water piping

The Pipes of sizes 150mm & below shall be M.S. ‘C’ class as per IS : 1239 and pipes

size above 150mm shall be welded black steel pipe heavy class as per IS: 3589, from minimum 6.35mm thick M.S. Sheet for pipes upto 350 mm dia. and from minimum 7mm thick MS sheet for pipes of 400 mm dia. and above.

For cooling and heating applications, the pipe may be sized accordingly in conformance with relevant ASME and CPWD Codes for the same.

Pipe insulation for Plant Room/Terrace pipe shall be with EPS (Expanded Polystyrene –TF Quality) moulded pipe section of density min. 20 Kg/cum after thick coat of cold setting adhesive (CPRX compound) , wire mesh, wrapped with 500 g polythene faced hessian cloth & finally applying 0.63 mm Al sheet cladding complete as per relevant standards.

The pipe within the building (in shafts, inside building etc.) shall be insulated with Nitrile insulation with min. 45 kg/cum density, K – 0.037 W/Mk or better at 20 degree C mean temperature, Class O Insulation applied with suitable adhesive & as per CPWD specifications.

Riser for each building will have a butterfly valve & a balancing valve for isolating the building.

Air separator used for removing air particles in a main header line

Pot strainer will be provided in main header of condenser circuit for removal impurities in header.

vi. Refrigerant Piping

All refrigerant piping for the air conditioning system shall be constructed from hard drawn seamless copper refrigerant pipes with copper fittings Y- joints, headers etc. and silver-soldered joints. The refrigerant piping arrangements shall be in accordance with good practice within the air conditioning industry, and are to include expansion valves, charging connections, suction line insulation and all other items normally forming part of proper refrigerant circuits.

The Pipe diameter and thickness shall be based on quantity and flow rate of refrigerant passing through the circuits.

vii. Indoor Units/Centralized remote Controller/Individual Remotes (Corded/Cord Less):-

Indoor units of VRV/VRF system should consists of Hi wall/Round flow cassette unit/ductable unit as per requirements. Suitable no. of Centralized Remote controller / manager should be considered with all superior specifications & BACNET/MODBUS compatibility. Individual corded/cordless remotes to be considered for each indoor unit & should be strategically located at site.



ix. Valves

All the Valves like Butterfly, Ball, Balancing, PICB must conform to PN 16 Pressure Rating.

Valves must be duly insulated with suitable Insulation of suitable thickness and density.

x. Thermostat

Proportional type for AHUs and for FCUs

Should be Microprocessor based with LED display

Should have Fan Speed and Heat/Cool Change Over Switch options

Automatic Heat / Cool Changeover option through external temperature sensor

Should have high accuracy, fast response, Long Life and must be easy to operate

Thermostat and digital programmable Humidistat, both BMS compatible to set the desired temperature and relative humidity as per the table given below.

Followings shall be the logics of operation where both shall be installed.

xi. Control Philosophy Both Thermostat & Humidistat shall enable the user to define the set points for Temperature & Humidity in absence / breakdown of BMS System. Thermostat

considered shall be suitable for 4 Pipe system with dual Analog Outputs for Cooling & Heating. However humidistat shall be having single On/Off output. Outputs of these thermostat & humidistat will go to controller which in turn shall modulate chilled water control valve, hot water control valve & switch on / off the Humidifier for maintaining Temperature & Humidity.

Following shall be the conditions possible :

When both Temperature & RH are high with respect to Set Point : Chilled water valve shall be modulated.

When Temperature is high & RH is low with respect to Set Point : Chilled water valve shall be modulated & Humidifier shall be switched on/ off.

When Temperature is low & RH is High with respect to Set Point : Both Chilled Water & Hot Water valve shall be modulated.

When both Temperature & RH are low with respect to Set Point : Hot water valve shall be modulated & Humidifier shall be switched on / off.

xi. Drain Piping

GI medium class Drain Piping/High Strength uPVC /PVC Pipe to be considered as per requirements.



The pipes shall be insulated with suitable material depending upon the requirement.

The pipe material properties like density, thickness, K-Value and R-Value must be in conformity with relevant IS Codes, NBC, ISHRAE, ASHRAE & ASME.

xii. Air Distribution (Ducting)-Air Conditioning

All ducts shall be fabricated either from galvanized sheet steel (GSS) confirming to IS 277 or Al sheets confirming to IS 737. The steel sheet shall be hot dipped galvanized with matt finish with coating of min. 120 GSM of zinc, GI sheet shall be lead free, eco-friendly & RoHS compliant. The sheet thickness shall be as per CPWD specifications.

Ducting shall be selected factory pre fabricated to achieve the high quality workman ship and specifications, end pieces can be site fabricated.

Supply & return ducting shall be with GSS Ducting of suitable gauge thickness & pressure rating as per requirements.

Duct Construction and suspension Standards must conform to IS655 / SMACNA and ASME.

All ducts are proposed to be insulated by use of closed cell cross linked polyethylene foam with aluminium foil.Thermal conductivity of the insulation material shall not exceed 0.032 W/moK at an average temperature of 25oC. Density of the material shall be 25-30 Kg/m3. The product shall have temperature range of –40 oC to 105oC. The insulation material shall be fire rated for Class 0 for surface spread of flame test. Water vapour permeability shall not exceed 0.15ng/Pa.Sec.m.

The exposed duct shall have 26 G Aluminum cladding as weather protection for the insulation.

Acoustic Duct Lining of suitable thickness and required length shall be provided at the commencement of ductwork from the respective Indoor Unit.

xiii. Supply / Return Air Grilles

Preferably powder coated extruded aluminum construction with preferably aluminum volume control dampers.

xv. VCD/Fire Damper with Actuators

VCDs to be provided at ducts at suitable places. Fire Dampers with actuators to be considered for floor mounted AHUs at supply/return duct.

The material of VCDs & dampers shall be MS enamel painted.

Fire Dampers shall be CBRI tested & certified for at least 90 min. rating against collapse & flame penetration as per UL 555 & 555S. Fire dampers shall be compatible with fire detection system.



For fire safety motorised fire dampers with electrical actuators interlocked with the air blowers shall be provided in supply and return air paths. All materials used for insulation shall be fire proof type. The air handling unit's motors shall also be interlocked with the central fire alarm system such that in case of detection of smoke or fire by the fire alarm system, the air handling units shall automatically shut off.

VAV Boxes to be used as per requirements.

14. Brief Equipment Specifications (Ventilation/Pressurization) :- Ventilation system should be considered for Toilets, Kitchen/Pantry, Basement, floor

smoke extraction, plant room & other utility areas etc. as required. Pressurization system for lift well/staircase/lift lobby etc. should be considered.

i. Axial Fans

Axial Fans for Fresh / Exhaust air suitable for installing in any position in Horizontal or vertical, and must be AMCA certified.

Casing of Fans shall be constructed of heavy gauge sheet steel and preferably be powder coated. Support brackets for ceiling suspension shall be welded to the casing for connection to hanger bolts. Threaded Rod of sufficient dia. /channel should be considered for hanging of fans.

Fan Sizing (CFM & Static Pressure) for Basement Ventilation (Fresh Air/Normal Exhaust / Smoke Exhaust) must be done considering the required ACPH levels in the Basement as specified in NBC 2016/ECBC or relevant codes.

The plenum of the fans must be lined with Acoustic Lining to ensure proper sound absorption.

Axial Fans for Basement Smoke Exhaust and Smoke Extraction purpose must be Fire Rated (H Class), able to withstand a temperature of 250 degree Celsius for a period of 2 hours.

Fan-motor assembly (as whole) shall be statically & dynamically balanced, conforming to ISO and AMCA Standards.

Should be suitable for 415 V ± 10% volts three phase 50cycle, AC supply.

The speed of Fan shall not exceed 1000 RPM for Fans with impeller diameter above 450mm and 1450 RPM for fans with impeller diameter of 450mm and less.

Sizing of Fans must be done in accordance with provisions sated in ISHRAE/ ASHRAE/ NBC 2016 and relevant IS Codes.

Noise Level of Fan (in decibel) should conform to NBC 2016/ASHRAE/ ISHRAE/ CPWD and relevant IS Codes.



i. Fan Section

Utility of Fan Section preferably for Pressurization of Lift Lobbies, Lift Well, Staircase. Fan must be AMCA certified.

Fan Sections for Pressurization purpose must be H/F Class as per requirement.

Fan-motor assembly (as whole) shall be statically & dynamically balanced, conforming to ISO and AMCA Standards.

Should be suitable for 415 V ± 10% volts three phase 50cycle, AC supply.

Provision of all necessary accessories such as Canvass Connection for connecting Fan assembly and Plenum must be considered.

Sizing of Fans must be done in accordance with provisions sated in ISHRAE/ASHRAE/NBC 2016

Noise Level of Fan (in decibel) should conform to latest NBC 2016/ ASHRAE/ISHRAE/CPWD and relevant IS Codes.

ii. Air washer & Scrubber for Kitchen areas :

It should be generally considered for kitchen ventilation. Air washer to be considered for fresh air supply & Scrubber to be considered for exhaust.

Capacity of air washer/scrubber to be decided considering negative pressure inside kitchen all through out.

Air Washer shall be of double skin construction with suitable thickness impregnated cellulose paper media (Celdek pads) of minimum 90% efficiency, factory assembled, distribution header, GI 'B' class piping, makeup, quick fill and drain connections, Butterfly/Gate valves for Pumps, make up, drain & quick fill connections of Sump, 2 Nos. pumps of suitable capacity (1W +1 S), Y strainers and necessary fittings, GI frame and supporting structure for Celdek pads, washable synthetic fiber filters (of 90% efficiency down to 10 micron) and SS(18 gauge) sump, TEFC Motor (IP:55) Control panel complete with necessary Switchgear, Starters, metering, power and control wiring between Control panel and Motor/Pump etc. & drive unit complete with Pulley, Belts, Fresh air Louvers with bird screen (GI Construction) etc as per specification & as directed by Engineer- in-charge.

Scrubber shall comprise of extract air intake section, electrostatic precipitation technology, dry type air cleaner to remove oil, smoke and fumes from exhaust air, washable type aluminum mesh filters, stainless steel spiked ionizers to create high voltage DC field, aluminum collector plates which should be alternatively charged positive and negative with large collecting area to work as magnet for charged smoke and oil particles. The system should allow connection to a fan section to achieve 500 FPM velocity across the air cleaner.

Suitable PCC/RCC foundation with plaster, Anti-vibration arrangement of cushy foot mountings etc. shall be provided.



B.4 Building management system: Building automation and control systems would control and monitor system such as

chiller, Pumps, cooling tower, Air handling unit, Fans in parking area. We have not considered electrical, Plumbing and firefighting equipment monitoring on the BMS system.

BMS system will monitor the operation of all air conditioning equipment and raise

alarm in case of any breakdown or fire. The system will automatically calculate energy consumption of all air conditioning

operating unit monthly and generate a comparative sheet of each month. The data can be stored for 18 month and then it can be transferred to other storage

device. An Open protocol BMS system (Modbus/Backnet) shall be designed so that it can

integrate with any system without any additional integrator. MONITORING/ CONTROLLING POINTS FOR BMS:

S. No. Description

HVAC SYSTEM

A OUTSIDE AIR

Outside Air Temperature and RH

B CEILING SUSPENDED AIR HANDLING UNITS (with RH & Temp Control)

CS AHU Blower Status

CS AHU Manual Operation Status

CS AHU FAN ON/OFF Status

CS AHU Motor trip Status

CS AHU Run Status

CS AHU Filter Status

CS AHU Return Air Temperature & RH

CS AHU modulate Chilled Water Valve

VAV/ VFD control

C VENTILATION FANS/TOILET FANS

D ELECTRICAL ENERGY USAGE MONITORING & BILLING

E BASEMENT FANS

F CHILLED WATER PUMP/COOLING TOWER

G HEAT RECOVERY WHEEL/TREATED FRESH AIR UNIT

H Hot water Generators

I Chiller, Expansion tank

Electrical System

A ALL Breakers (for HT & LT)

B All Energy meters/ Multifunction meters

C Transformers

D Generator

E Lifts

F Ups

G Fire Alarms

Water Management

A Row water / domestic water pump

B Bore Well pumps

C Filter Feed pumps, RO pumps, s/ump Hydro pneumatic pumps

D STP & WTP

E Overhead / Underground tanks for level status.



ELECTRICAL SERVICES

C.1 INTENT

The intent of this report is to define the basis and enlist the salient features of electrical system design for “Proposed Re-development of Model Town Residential Society”. This report will be a guideline to take forward the detailed engineering design and will help in the preparation of: 1. Design Calculations 2. Cost Estimates 3. Engineering Drawings

This report is a preliminary report which needs to be read in conjunction with other

Project Documents and Drawings. Should there be any ambiguity, the same shall be brought into the notice of “The Architect Consultant”.

This report also defines the broad system requirements pertaining to electrical

systems, defining the standards to be followed along with a broad scope of work, so that the battery limits gets broadly specified. It is required that the system shall be energy efficient, easy to operate and maintain, robust and reliable. The design should embody all necessary requirements for “GRIHA 3 STAR” rating.

C.2 SYSTEM REQUIREMENTS

C.2.1 CODES & STANDARDS

It is required to follow all relevant Indian & International codes as per latest

amendments. However in particular following codes may be followed: 1. Local Bye-Laws 2. National Building Code (NBC)-2016 3. National Electrical Code (NEC)- 2011 4. Indian Electricity Rules (IER) 5. Indian Electricity Act (IEA)- 2007 6. NEMA Standards 7. Indian Standards (IS) 8. IEC Standards

In addition to the requirements mentioned in the relevant standards above it is

required that best engineering practises shall be followed.

C.2.2 FORECASTED LOAD DEMAND

Following assumptions have been made while forecasting the overall load demand

for the project:

For Flats, following is the assumption for load calculation:

Sr. No.

Description Connected Load (kW)

Demand Load (kW)

1 Type-2 Flat 15 5

2 Type-3 Flat 15 5

3 Type-4 Flat 27 9.5

4 Type-4S Flat 27 9.5

5 Type-5 Flat 28 11.7



For common Areas, following is the assumption for load calculation:

Common Area Lighting – 0.6W / sq.ft. of connected load with 0.8 diversity factor Common Area Plug load – 0.15W / sq.ft. of connected load with 0.8 diversity factor Lift Load – As per actual Plumbing Load – As per actual Fire Fighting Load (Dead Load) – As per actual

For other Loads, following is the assumption for load calculation

Sr.No.

Area Description

Lighting Power HVAC Equipment

watt/sq.ft.

Diversity factor

watt/sq.ft.

Diversity

factor

watt/sq.ft.

Diversity

factor

watt/sq.ft.

Diversity

factor

1 Site Load 0.6 0.8 0.1 0.8 0 0 0 0

2 Basement 0.6 0.8 0.6 0.8 0.93 1 0 0

3 Club House 1.5 0.8 2 0.8 5 0.9 1 0.75

4 Site Load 0.6 0.8 0.1 0.8 0 0 0 0

5 School 0.6 0.8 2 0.8 50 50 2 0.75

6 Commercial Building

0.8 0.8 2.5 0.8 8 0.9 2.5 0.75

7 Dispensary 0.6 0.8 2 0.8 5 0.9 1 0.75

Based on the assumptions above, following is the forecasted load demand for the complete project

Total Connected Load = 53.62 MW

Total Demand Load = 24.15 MW

For Detailed Load Calculation, Kindly refer Electrical Annexure-1 Note: The load demand, as forecasted above is the tentative load demand based on the assumptions listed. It is however required to conduct a detailed load calculations during detailed engineering stage. EPC contractor is required to submit the detailed load calculations and get the same approved from the consultant. However the sizes of transformer and DG set as mentioned are the minimum requirements and needs to be provided by the contractor.

C.2.3 TRANSFORMER & DG SIZING

Following assumptions have been made while sizing Transformers for the project:

Overall diversity factor of 0.75 is used for sizing the transformer.

It is considered that transformer shall not be loaded above 75% of its rated capacity.

15% spare capacity is being considered in each transformer considering future expansion.

An average power factor of 0.9 is assumed.

It is proposed to have dry type transformers with best efficiencies as per ECBC norms.



Following assumptions have been made while sizing DG sets for the project:

Overall diversity factor of 0.75 is used for sizing the DG sets.

Flats are considered on DG backup as follows : 2 kVA backup for T2 & T3 4 kVA backup for T4 & T5

100% DG Backup considered for commercial, club house and common areas.

It is considered that DG shall not be loaded above 80% of its rated capacity.

An average power factor of 0.8 is assumed.

It is proposed to have silent type DGs for ratings up to 750KVA.

For ratings above 750KVA it is proposed to have DGs without acoustic canopies and it is further proposed that for all such DG sets the rooms where they are being kept shall be acoustically treated to meet the noise level requirements as per CPCB guidelines.

TRANSFORMER SCHEDULE - ZONE 1

Sr.No. Area Description Area

(in sqft) TOTAL

MD (kW) CL (kW) MD (kW)

1 Tower Load

T-15-Type 3 (S+20)

1246 394

T-18-Type 3 (S+22)

1366 433

T-19-Type 2 (S+24)

1488 474

Total Load (kW) 4101 1301

Total Load (kW) with overall

diversity factor of 0.75 976

Load (in kVA) @ 0.9 pf 1084

% Loading @ 75% 1446

Considering Future Expansion @ 15%

1663

Selected Capacity 2000 kVA

T-16-Type 3 (S+20)

1246 394

T-17-Type 3 (S+22)

1366 433

T-20-Type 2 (S+24)

1488 474







% Loading @ 75% 1446


1663


2

Site Load & Religious Structure and tower common loads

162753 114 355

3 Basement - 01 156196 350 310

4 Basement - 02 156196 269 247

5 Basement - 03 156196 269 247





% Loading @ 75% 1289


1483


DG SCHEDULE - ZONE 1

Sr.No. Area Description TOTAL

CL (kW)

MD (kW)

1 Tower Load

Type 3 (S+20) 108 86

Type 3 (S+22) 110 88

Type 2 (S+24) 114 90



% Loading @ 80% 413

Selected Capacity

DG 500 kVA

2 Site Load & Religious Structure 114 91

3 Basement - 01 350 310

4 Basement - 02 269 247

5 Basement - 03 269 247







% Loading @ 80% 1050

Selected Capacity DG

2 X 500 kVA + 1 x 1250 kVA for flats

LOAD SCHEDULE - ZONE 2


(in sqft) TOTAL

MD (kW) CL (kW) MD (kW)

1 Tower Load

T-4-Type 4 (S+21)

149992 2342 797

T-5-Type 4 (S+22)

159361 2450 834





% Loading @ 75% 1813

Considering Future Expansion

@ 15% 2085


T-6-Type 4 (S+22)

170756 2450 834

T-8-Type 4 (S+22)

159361 2450 834





% Loading @ 75% 1854


@ 15% 2132


Type 5 (S+22) 191382 1250 516



Type 5 (S+20) 68261 579 234

Type 5 (S+24) 210678 2030 844





% Loading @ 75% 1771


@ 15% 2036


T-7-Type 4 (S+23)

179082 2559 873





% Loading @ 75% 970


@ 15% 1115


Club House 41441 180 149

2 Site Load & tower common services

269522 189 401

3 School 86112 380 313

3 Basement - 01 276872 508 461

4 Basement - 02 276872 474 435

5 Basement - 03 276872 474 435





% Loading @ 75% 2437





Sr. No.

Area Description TOTAL

CL (kW) MD (kW)

1 Tower Load

T-4-Type 4 (S+21) 70 56

T-5-Type 4 (S+22) 71 57

T-6-Type 4 (S+22) 71 57

T-8-Type 4 (S+22) 71 57

Type 5 (S+22) 55 44

Type 5 (S+20) 36 29

Type 5 (S+24) 74 59

T-7-Type 4 (S+23) 71 57



% Loading @ 80% 650

Considering Future Expansion @ 15% 748

Selected Capacity

DG 2 X 380 kVA

Club House 180 149

Site Load 189 151

School 380 313

Basement - 01 508 461

Basement - 02 474 435

Basement - 03 474 435



% Loading @ 80% 2278

Selected Capacity

DG

2 X 1010 kVA+ 2 x 1250 kVA for flats



TRANSFORMER SCHEDULE - ZONE 3


(in sqft) TOTAL

MD

(kW) CL

(kW) MD

(kW)

1 Tower Load

T-9-Type 4 (S+24) 149992 2668 911

T-22-Type 3 (S+22) 1366 434

T-23-Type 3 (S+20) 1246 394


Total Load (kW) with overall diversity factor

of 0.75 1305


% Loading @ 75% 1933



T-10-Type 4 (S+24) 159361 2668 911

T-21-Type 3 (S+22) 1366 434

T-24-Type 3 (S+20) 1246 394



of 0.75 1305


% Loading @ 75% 1933



T-11-Type 4 (S+22) 2450 834

T-13-Type 4S (S+20) 2234 759



of 0.75 1195


% Loading @ 75% 1770





T-12-Type 4 (S+22) 2450 834

T-14-Type 4 (S+20) 2233 732



of 0.75 1175


% Loading @ 75% 1741



Site load and tower common load 250 508

Basement - 01 517 468

Basement - 02 483 442

Basement - 03 483 442

Club House 128 109

Hospital 381 314



of 0.75 1713


% Loading @ 75% 2537


Commercial 3938 3136



of 0.75 2352


% Loading @ 75% 3485


2 X

2000 kVA





CL (kW) MD (kW)

1 Tower Load

T-9-Type 4 (S+24) 72 57

T-22-Type 3 (S+22) 54 43

T-23-Type 3 (S+20) 54 43

T-10-Type 4 (S+24) 72 57

T-21-Type 3 (S+22) 54 43

T-24-Type 3 (S+20) 54 43

T-11-Type 4 (S+22) 71 57

T-13-Type 4S (S+20) 71 57

T-12-Type 4 (S+22) 71 57

T-14-Type 4 (S+20) 70 56



% Loading @ 80% 802

Selected Capacity

DG-01

1 X 500 KVA 1 x 380 KVA+3 x 1010

kVA for flats

Site Load 250 200

Basement - 01 517 468

Basement - 02 483 442

Basement - 03 483 442

Club House 128 109

Hospital 381 314



% Loading @ 80% 2315

Selected Capacity

DG-01

2 X 1250 KVA

Commercial 3938 3136



% Loading @ 80% 3675





Selected Capacity

DG-01

3 X 1250 KVA



C.2.4 POWER DISTRIBUTION SCHEME

Based on the overall load demand the electrical connections to be provided as follows:

i) All flats units will be fed from separate substations with required transformer capacities. All flat units shall be metered as per the DISCOM norms under LT Tariffs.

ii) Separate Substation shall be planned for common services like Lifts, Common Area lighting, Basement loads and site loads etc.

Each Distribution Substation will receive 2 Nos feeder lines from remote Substation as per the prevailing norms of DISCOM.

EPC contractor is required to set up all substations and electrical switch rooms fully charged and get the same approved from DISCOM.

All statutory charges against challans shall be done by the client. However liasoning with the DISCOM and getting the electrical installations approved from them needs to be done by the EPC contractor.

Substations shall be planned in 1st Basement with necessary access and space provisions for future maintainability and operations.

The supply will terminate into HT Panel with necessary switching, metering, monitoring and protections as required. All HT Panels shall be internal arc tested for the rated fault capacity of 25kA for 1 sec.

All Substations shall be remotely operated from SCADA as per specifications.

11KV cables shall be aluminium armoured XLPE insulated, FRLS, 11KV/11KV(UE) cables. Terminations of these HT cables shall be through heat shrinkable kits

It is proposed to have cast resign type, 11/0.433kv dry type transformers in

substations with provisions for AVR, OLTC with tap settings of +5/‐ 15% in the steps of 2.5 and RTCC.

Transformer losses and efficiency shall be as per latest ECBC guidelines.

Transformers shall be provided with restricted earth fault protection.

Supply from these transformers shall advance to Main LT Panel in each substation through sandwich type bus ducts of suitable rating wherefrom the supply will reach to metering panel of each residential tower, Site infra panel, basement panels, club houses, commercial complex, hospital and other utilities.

Main LT Panel in each substation is a customized Panel fabricated out of CRCA in different compartments inside the Substation in 1st Basement.

The Panel shall have separate compartments for incoming and outgoing cables, switchgear i.e. an ATS/ACB/MCCB, Bus bars for distribution and mounting of switchgears, metering and CT compartments. .

LT panel shall have suitable interlocking between grid and DG feeders, air circuit breaker (ACB), moulded case circuit breaker (MCCB), protection relays & metering components connected through protection & metering class CTs.

Each transformer shall have a dedicated APFC panel for power factor correction. Supply to APFC panel shall be isolated from DG.

Certain critical loads have been planned to have DG backup. DG backup for common utilities of each residential tower shall be provided through an emergency panel for each tower.



DG backup is planned for each type of flat as under :

2 kVA backup for T2 & T3

4 kVA backup for T4 & T5

Metering for DGs shall be done through separate meters located in separate metering panel at ground floor.

Provision shall be made for tripping in each flat in case each flat exceeds its backup power limit of consumption.

DG backup for other common utilities shall be through Main LT Panel in the substation wherein DG feeder shall be interlocked with grid feeder.

In case of grid power failure required kVA capacity, radiator cooled diesel generators have been proposed as secondary source of supply which shall cater to critical load demand of buildings.

D.G. sets have been placed at 1st Basement.

The selection of DG have been made in such a fashion that at the peak load time DG's shall run in synchronization with each other.

We propose to synchronize DG sets for the system. DG synchronization panel shall consist of both auto / manual synchronization function with inbuilt controller and protective circuit breakers.

Over current, Earth fault, restricted earth fault, Loss of excitation, reverse power protections shall be provided. Both audio and visual annunciation shall be generated in case of any abnormality as per design scheme.

Diesel generator will be four stroke, multi‐cylinder, totally enclosed, continuous duty, direct fuel injection, single bearing self-excited self-regulated brush less regulator with automatic voltage regulators, Series Turbo charged Compression ignition, Complete with its self-contained lubricating system.

DG set will have following components: Lubricating Oil system, Fuel oil system with Fuel Day Tank of 990 litres, Air Intake system with residual silencer, Engine cooling system, Exhaust system, Governing system, Acoustic enclosure, AVR, Alternator.

990 Litres M.S. day oil tanks have been proposed for diesel back up and that will be placed near D.G. Sets.

Fuel piping shall be laid from DG Sets to day oil tanks of 990 liters each.

DG exhaust shall be taken up to the required heights with M.S. structure support.

Power Distribution to each flat shall be through dedicated cable with metering being done at ground floor level inside a metering panel.

Commercial building shall be fed through dedicated rising mains.

C.2.5 DOWN LINE DISTRIBUTION

Power from different feeders will flow towards different Distribution Boards through 1.1kV Grade XLPE armored/unarmoured cables.

LT Cables shall be XLPE insulated FRLS cables.

These cables will run to each Floor/area DB’s from their respective feeders through conduits/cable trays/raceways and inside a dedicated electrical Shaft or above false ceiling and will terminate into it. The Distribution Boards consists of main incoming switchgear and outgoing switchgears which will usually be MCB (Miniature circuit



breaker). Each outgoing circuit will be protected by switchgear of appropriate capacity. It is proposed to use RCCBs in each phase to prevent earth leakages.

It is proposed to have LED light fittings for complete project. Other fixtures shall be as per client’s requirements. The recommended illumination levels shall be as per IS 3646

The system of wiring for light points shall consist of PVC insulated copper conductor stranded flexible FRLS wires of 1100 volts grade of insulation running inside PVC conduits which shall be inside the ceiling for all exposed conduits material used shall be MS.

In commercial areas the wires may run inside raceways running at floor and ceiling level.

Minimum size of copper conductor shall be 1.5 sq. mm for lighting. For power outlets it is proposed to run PVC insulated copper conductor stranded flexible FRLS wires of 1100 volts grade of insulation for 5 Amp Power point outlets, 2.5 sq.mm for Normal Utility, 15Amp Power points and 4 sq.mm for Heavy utility power points through PVC conduits/powder coated M.S. raceways/G.I. raceways as per requirement.

Color code shall be maintained for the entire wiring installation that is Red, Yellow and Blue for the three phases, Black for neutral and Green with Yellow band for earthing. Besides provision of ferruling, number coding shall also be provided for easy identification for maintenance purposes.

C.2.6 UPS

We propose to have UPS backup for certain critical loads like emergency lighting loads, Substations, work stations and for ELV components.

The UPS shall be IGBT based type with isolation transformer (preferably inbuilt). The minimum permissible THD (Total harmonic distortion) level shall not exceed 3% in case of 3 phase output UPS and 5% in case of single phase output

The UPS must also have a feature of audible alarm in case of battery mode, Low battery, Overload and faults.

The UPS must also have LED indicators for Load level / Battery level, Battery, Utility Power, Inverter, Bypass, Overload, and Faults. Power from three UPS shall be fed to UPS Output panel kept at the same location.

This UPS output panel shall feed several distribution boards kept on electrical room for UPS supply.

C.2.7 SOLAR PV SYSTEM

Grid interactive, Solar PV system shall be planned as per the requirements of EIA / GRIHA whichever stringent.

PV Panels: A PV module is a packaged, connected assembly of solar cells which are connected in series and parallel arrays to generate electricity. For Proposed Solar PV system arrays of 320kWp solar panels shall be arranged and dc power will get generated by photoelectric effect.

Inverters: Inverters are the power electronic devices that are used to convert a fluctuating dc input to 415V ac power output. These are usually made up of SCRs or IGBTs and are suitable for interacting with grid. DC power collected from PV panels is fed to these Inverters. These Inverters shall be selected in such a fashion so that its characteristics results in good efficiency and minimum losses. Inverters used shall be three phase inverters with Varistor fixed on dc side and MCCB on ac side. This shall be placed near solar PV panels.

http://en.wikipedia.org/wiki/Module

http://en.wikipedia.org/wiki/Solar_cell



Synchronizer: Solar PV systems shall be provided with synchronizing equipment having three input for comparison i.e. grid supply vs. solar output, generator output VS solar output so as to connect the PV systems in synchronism with grid or generator. In case of grid failure, solar PV system shall be disconnected from the grid and out of synchronization for a period generator supply is not restored. PV system shall be synchronized with the generator supply after generator is started and supply is stable.

Solar PV cells shall be charged only in day time until solar supply will available. System loads shall consume available solar supply, extra available generation shall be supplied back to the Grid.

C.2.8 EARTHING & LIGHTNING PROTECTION

The Earthing system of the entire project will be designed to keep resistance of earth less than One (1) Ohm or as specified in IS 3043.The protective conductor size is calculated considering the below mentioned relation as per IS:3043 :

Where S = cross sectional area of protective conductor I = Fault current magnitude.

t = time of fault current withstand by the protective conductor. K = constant (depends upon temperature and material) C.F. = Corrosion factor Value of K is taken as per tables: 6A, 6B, 6C, 6D (page 31) of IS: 3043.

We propose to have a conventional type Lightning Arrestor system in accordance with NBC-2016 installed at the highest point of building. Earth conductors shall form a Faraday Cage in the terrace and down leads will terminate into separate earth station for Lightning Arrestor.

C.2.9 ELV SYSTEMS

Telephone/Data/Video

It is proposed to have FTTH system for telephone distribution. Optical fibre cable shall travel in each shaft as a riser cable where ONTs will be placed inside the shaft and therefrom the distribution shall happen through copper paired cables.

RJ-45 outlets shall be provided for telephone outlets

TV distribution will be done through main riser and tap off boxes. Each flat will be provided with dedicated TV splitter.

For video RG-6 outlets will be provided

Wired data outlets shall be provided for commercial areas where high speed data transmission is required.

All of the Data devices will consist of data jacks, wired with Category 6, unshielded twisted pair cable in Heavy Duty surface conduits.

S = I x √ t x C.F

k



Addressable Fire Alarm

We propose to have an addressable fire alarm system for complete facility. Manual call points with push buttons shall be installed in the corridors under a breakable glass enclosure painted red with control module.

Smoke and heat detectors shall be provided at required closed areas.

Each manual call point shall be wired with strobe & detectors in such a fashion that it forms a ring loop and returns back to a central fire detection panel.

Each hooter shall forms a ring loop and returns back to same central fire detection panel.

In triple height areas, beam detectors are provided with maximum 70 meter coverage length.

Fault isolators shall be provided after every 8‐15 devices to isolate the faulty part of the loop.

The main fire detection panel shall have LED indications for different zones and shall have self-supplied battery bank of +24V dc. Power to this panel shall be made through a 6 Amp ups power socket.

A Repeater fire alarm panels have been proposed at strategic locations

2 way talk back system is also proposed in sync with fire alarm system.

CCTV (IP Based)

The system shall be IP based comprising IP cameras, Server and Monitor. This system shall ensure unlimited recording capacity through Servers. Remote monitoring of each camera is possible.

Authority can monitor different sites from one location at electrical panel/AV room. In IP CCTV System any number of cameras (either having on board IP connectivity or via encoders) can be connected via CAT 5e / CAT 6 cables to switches and into the Network. Each of the cameras has individual IP addresses and can be accessed as per the network parameters.

The storage is done on a network node which may be remote to the site of installation. There may be a separate video streaming server and a separate storage server or a combination as per requirement. Usually the cameras which can be connected in one system is controlled using licenses. Also with the Server Based systems better graphic technologies can be used to enhance the viewing and archiving.

The Cameras are considered for 100% coverage of the building area.

NVR’s have been considered at server Rack in server room.

Video Door Phones & Boom Barriers (IP Based)

Each flat shall be provided with digital video door phones with screen inside flat and a camera near security desk in each tower at stilt level.

Each camera can be connected to max. 4 screens.

The system shall support wireless integration with digital door lock.



Boom barriers shall be provided at each gate entry / exit.

Digital Voice Evacuation System

The Digital Voice Command Center has been proposed with the FACP.

It shall contain all equipment required for audio control functions. This shall include speaker zone indication and control, digital voice units and microphone.

Public address panel shall be placed at server rack in electrical panel/AV room.

The Voice Command Center equipment shall perform the following functions:

Operate as a supervised multi-channel emergency voice communication system.

Audibly and visually annunciate the active or trouble condition of every speaker circuit.

Audibly and visually annunciate any trouble condition for digital tone and voice units required for normal operation of the system.

Vehicle Management System Each vehicle need to be recognized through electronic means (eg RFID) and Number plate and Driver image capturing and then need to be recorded into the storage server. The data base need to be updated as per the vehicle movement and need to be linked to the office management system for monitoring and analysis. For wheelers need to be checked for any hidden objects below the vehicle preferably using an under vehicle surveillance system (UVSS) placed at the entrance of the car parkings.This system need to be connected through network to the security monitoring room for immediate attention during the movement of vehicles. The automated intelligent garbage compactor system shall be designed in such a way that it should compress the volume of garbage as per requirement. This shall be designed as per actual quantity of garbage. The waste compactor shall be RHOS complaint. The compaction force, cycle time motor size, drive system, control system communication system shall be designed as per project requirements. The system shall be designed on the basis of towers and population as per norms.

C.3 SCOPE OF WORK

Broad scope of work shall include, designing, engineering, supply installation testing

and commissioning of following:

EPC contractor is required to set up all substations and electrical switch rooms fully charged and get the same approved from DISCOM.

All statutory charges against challans shall be done by the client. However liasoning with the DISCOM and getting the electrical installations approved from them needs to be done by the EPC contractor.



11 KV feeders to Distribution Substations

Setting up of Distribution Substations.

Complete SCADA integration and automation of substations.

Captive power generation through D.G sets and Solar PV system.

Cabling and power supply distribution to all residential buildings, common utilities, flats,non residential buildings, site infra, Basements and other utilities.

Grounding and lightning protection.

CCTV and security, Boom barriers scanners, biometric system etc.

Fire alarm and PA system

Voice / Video and Data system

Video door phones

Vehicle Management System

Fascade lighting & Media Screen in commercial block

Electrical Vehicle charging system.

Boom Barrier at each gate entry/exit

Providing and fixing of chimneys inside kitchen in each flat.

PHE SERVICES

D.1 INTENT A well-balanced domestic and flushing water distribution system and a well-designed

drainage disposal system are essential for the operation of the proposed redevelopment of Redevelopment of Re-Development Model Town, New Delhi. Design is in line with NBC-2016 the local authority and State Environmental Impact Assessment Authority (SEIAA) Guidelines. Water for the development will come from the following sources:

D.2 SYSTEM REQUIREMENTS

D.2.1 ASSUMPTIONS

Source of water

Incoming water from Delhi Jal Board

Treated Effluent from Sewage treatment Plant.

The source of water for the project is Delhi Jal Board supply mains. A stable water supply system is essential to ensure constant and regular supply of water to the residents. To achieve this, adequate water storage is required to overcome any unforeseen interruption to the water supply.

Total water storage tanks for domestic, flushing and will be sized for:

One and half (1.5) days water Storage in underground and Over Head Water tanks for domestic water.

0.75 day storage tank for treated water tank for flushing and horticulture.(Under Ground and Overhead water tank)



Population.

Population is worked out on the basis of NBC-2016.

Source (NBC-2016) Description

Residential No of Person Per Flats

Type-II & III 5

Type-V, IV & IVS 6

Commercial @ 10 Sqm / person

Retails 3 Sqm per person (For ground floor) and 6 Sqm per person (For first floor & above)

School @ 4 Sqm / person

Water demand Projection based on NBC 2016 Table-1 Part-9 Plumbing Services.

Description Domestic Flushing

Residential 90 45Ltr.

Retail

A. Staff 25 Ltr. 20 Ltr

B. Visitors 5 Ltr. 10 Ltr.

Office

A. Staff 25 Ltr. 20 Ltr

B. Visitors 5 Ltr. 10 Ltr.

School

A. Student 25 Ltr. 20 Ltr

B. Staff 25 Ltr. 20 Ltr.

Horticulture - 3 litres / m2 of green area

HVAC Cooling Tower – 2000 TR/10@12HOUR

Flow rate of plumbing Fixture.

D.2.2 CODES & STANDARDS

National Building Code (2016) - Part IX

IS Codes and Plumbing Standards

Plumbing Handbook, SP-35-1987

CPHEEO Manual ( Govt. of India) - 1999

Uniform Plumbing Code- 200

Water Closet 6/3 ltr. per Flush

Health Faucet 4 ltr. Per mint

Kitchen Faucet 6 ltr per mint

Urinal Sensor 0.5 ltr per mint

Wash basin 5 ltr per mint

Shower 6 ltr per minit



D.2.3 WATER CALCULATIONS

Summary of water demand norms Fire demand: As per NBC 2016 Part-4 Table 7 The total no. of hydrant in the complex will be exceeding 100 nos. Provide fire water underground tank 3x200 KL. Overhead tank on each residential building upto 60m & Business Building Upto 30m height as per NBC 2016 Table 7 . Residential Building - 10000 Ltrs. Business Buildings - 20000 Ltrs. Source of water

The main source of water for the project is Delhi Jal Board supply mains. Water supply network shall be stored in a UG water Tank. Domestic water requirements will be fulfilled from Under Ground Tank for Building. Flushing,

Flushing, Irrigation & HVAC Cooling tower make up water requirements of building shall be fulfilled from STP treated water.

System Requirements

Water supplied by the Delhi Jal Board is potable and hence no water treatment required.



Source Supply line after entering the fire water tanks will overflow to the domestic water tanks. A set of Fixed Speed Hydro pneumatic pumps for every zone (Zone Description mention below table in pumps Sizing) to transfer the water overhead tanks for Domestic and flushing thereby to the fixtures via gravity feed supply.

The top 5 floor of resident will be supplied water through a hydro-pneumatic system from tanks located at the roof top.

A normally closed bypass valve will be provided which when opened to allow the water supply from the roof water tank to bypass the hydro pneumatic pumps if the hydro pneumatic fail to operate.

Pressure reducing valves will be used on the distribution lines at each floor to maintain a minimum operating pressure of 1.5-2.0 bars for all Resident units.

Individual instant geyser planned for hot water in Kitchen, Toilet and shower area.

Water Supply meter install at every outlet as per GRIHA requirement.

Dual piping system.

Water Storage Capacity of Tanks Domestic (one and half day) – 1235 x 1.5 KL = 1852.5 KL = say 2000 KL Under Ground 1500 KL+ Overhead 500KL Treated Water Tank – say 1027 KL Under Ground 800 + Overhead 300 KL Fire Water Tank – 600 KL The Tank Details & capacity given in the above are minimum. During detailed designing, if required and found necessary, the capacity / rating of the equipment may be upgraded subject to concurrence of Engineer-In-Charge. Sizing of Pumps

The Flow Rate of Pumps specified is minimum, Pipe Friction losses, Bends etc. and other relevant Site Conditions.

One Standby Pump to be provided in each & every set of working pumps. The Pumps shall be sized so as to ensure approximately 4 hours of operation time to fill the overhead tanks.

Above Capacity of the pumps and water tank specified are minimum.



Water supply design criteria

Water supply system shall be designed as per guidelines stipulated by CPHEEO, NBC and relevant Indian standards. A summary of brief design parameters to be adopted for design water supply system is given below:

Different Uses Norms

Minimum velocity of flow in pipe 1.5m /sec

Maximum velocity of flow in rising main

2.5m /sec

Pipe size Based on flow as per fixture units

Formula for design distribution Hazen-Williams formula V=4.567 x10-3 x C x D0.63 x S0.54 D= Internal diameter of pipe in mm V= Velocity in mps R= Hydraulic radius in M S= Slope of hydraulic gradient and C= Hazen- Williams Co-efficient

Hazen- Williams Co-efficient C 140 for DI pipe

Provide

Provide Minimum residual head a) Domestic b) Flushing Irrigation c) Irrigation

10m at highest overhead water tank 10m at highest overhead water tank 30m

Drip Irrigation with efficiency 0.90 for shrubs& sprinklers with efficiency 0.75 for lawn area.

D.2.4 SWEAGE SYSTEM

The Sewage System are Designed based on the Following Codes and Standards. i. CPHEEO Manual for Sewage and Sewage Treatment ii. NBC-2016 The sewer network for residential complex in 1st & 2nd basement ceiling/Ground level. The following parameters/ site conditions shall be kept in mind when designing the sewage, Sludge and storm water drainage system.

Natural slope of the area;

Layout of different facility in the complex;

Sub-soil water table;

Provision of venting arrangement for manholes;

Construction of manholes & laying of pipes considering ground condition;

Termination of vent cowl at terrace level;



Sewage flow starts with fractional capacity and builds up to full capacity in due course. Contractor to ensure pipe design accordingly. An operational plan to meet this demand from a low flow to full flow will be part of the design.

Sewer pipes in building are mainly laid in basement ceiling. CILA pipe and fittings will be used in the basement, ceiling or embedded.

Total Sewage generated

S. No.

Description Water demand in KLD x .8 + Flushing x1.0

Sewage generated in KLD

1. FLOW TO STP- 1 (425X.8+245) 585 KL

Total Capacity as per EIA norms 1.2 x 585 = 702 KL Say 700 KLD

S. No.

Description Water demand in KLD x .8 + Flushing x1.0

Sewage generated in KLD

1. FLOW TO STP- 2 (790X.8+456) 1088 KL

Total Capacity as per EIA norms 1.2 x 1088 = 1305 KL Say 1300 KLD

Soft water for cooling tower

Soft Water - 250KLD/DAY 25 KL/HR

Soft water Storage tank - Under Ground 180 KL Overhead Water 70 KL Total Sewage Treatment Plant capacity 700+1300 = 2000KLD

Say = 2000 KLD

Process = MBR

Total Treated Water Available = 1674 x 0.95 = 1590 KL

Surplus treated water shall be supplied to other colony by the Authorities

Quantity of surplus Water = 1590 – 1027 KL = 563 KL / Day

Sewage Sumps 3 no sumps with pumps (1W +1S) provided to transfer soil and waste to STP from Schools and Tower 04 building.

The Sewage Treatment Plant capacity given in the above are minimum.

In the STP to provide the mandatory equipment to be install and treated water output parameter as per CPCB norms.



Design Criteria for Sewer Pipes

Different Use Specified Norms

Type of Collection System Separate System

Peak Factor 3

Minimum velocity 0.6 m/sec

Maximum velocity 2.5 m/sec

Minimum size of pipe a) Under Ground b) Within buildings in basement

200 mm (ID) As per fixture units

Minimum depth of Underground Sewer

1.0 m from FGL (0.6 m minimum cushion)

Hydraulic Formula for calculation for design of sewer lines (As per CPHEEO manual 3.4.2.1 page no-36)

Manning’s formula V= 1/n*(R^2/3) *(S^1/2 ) V= Velocity R = Hydraulic mean depth = A/P S = Slope

Flow conditions in pipe up to 300 mm dia

0.67 full

Manning’s Co-efficient ‘n’for a) RCC pipes b) CILA pipes

0.011 0.012

Shape of sewers Circular

Material of sewers pipes a) Under Ground b) In basement ceiling

SW PIPE CILA

Manhole Sizes As per manual on sewerage and sewerage treatment/ IS- 4111:1985

For depth above 0.9m & up to 1.65m 900 mm diameter

Manhole covers with frames 560mm dia (heavy duty) SFRC Manholes Covers

Waste pipes shall terminate in Gully Trap and to be discharge to manholes. Soil pipes will discharge to manholes.

Grease Trap Commercial Kitchen waste shall be disposed to manholes through grease trap.

Proposed pipe material

Description Material

Under Ground Water Mains/in basement ceiling Ductile Iron Pipes K-9 ( above 100mm)

Pump House Heavy Duty G.I / D.I

Distribution rising mains Heavy Duty G.I – IS 1239

Internal distribution pipes concealed within toilets, kitchen etc. CPVC

Hot Water Pipes Insulation 6mm neoprene insulated

Irrigation HDPE PE 80, PN 10



Soil / Waste Pipes / Vent / Rainwater

1. Soil & Waste / Vent Material

1.1 Exposed Hubless Cast Iron Pipes as per IS- 15905

1.2 Concealed Cast Iron as per IS-3989

2. Rain water pipes UPVC

3.External Sewerage and Drainage

3.1Sewerage Pipe Material SW pipe

3.2 Storm water drains RCC NP-3

4. Manholes and Covers

4.1 SEWER RCC construction with 600x600 SFRC Manholes Covers

4.2 Storm Water RCC construction with 600x600 SFRC Manholes Covers

5. Catch Basin At 15m interval, for roads 6m wide brick construction with perforated SFRC heavy duty covers 600X450MM

A. Quality of treated wastewater required for flushing and irrigation.

S. No. Parameters USEPA Guidelines

1. pH 6.5-9.0

2. BOD Not more than 10 mg/L

3. COD Not more than 30 mg/L

4. Suspended soils Not more than 1mg/L

5. Coliform Nil

6. TSS Not more than 10 mg/L

7. Total nitrate Not more than 10 mg/L

8. NH4-N Not more than 5 mg/L

9. Fecal Coliform Not more than 100 mg/L

B. Quality of Soft water - Hardness Commercial Zero

D.2.5 SOIL/WASTE/RAIN WATER DISPOSAL SYSTEM Internal: Soil and drainage pipes size shall be separate as per NBC, based on fixture units. Vent Pipes Stack venting Cleanouts in shafts for maintenance 1m above floor level for each soil/waste pipes Pipe sizing soil and waste as per Table 18, 19 and 20 Part 9, considering fixture units.



Rain water harvesting as approval EIA

D.2.4 MATERIAL FOR SANITARY FAUCET & ACCESSORIES

Sanitary ware Catalogue no. and make for reference of quality and cost. Contractor may offer any of the makes specified, within the cost for approval.

Sl. No.

Sanitary Fixture Hindware

Jaquar Kohler

Cat. No Cat No. Cat. No

1 Floor Mount, EWC with cistern

92512 CNS-755 SN CSN-207

K-1939 IN –S-O

2 IWC with open cistern 20042 ECS-WHT-451LE Cistern WHT – 184L

-

3 Urinal with battery operated sensors

60018 URS-WHT-132530 SNR-51083

i) Urinal - K-5017 IN-ER-O ii) Sensor _ K-24199 IN-C01-

CP

4 Under Counter wash basin

10065 CNS-WHT-705 K-2210 IN - O

5 Handicapped WC with cistern & WB with grab bars complete

70002 WC – with Cistern CNS-WHT-851 WB - CNS-801 WAC-BG 0800 (Grab Bar) WAC-BR 0600 (Grab Bar)

WC – K-1939 IN-S-O WB –K-5583 IN-1WH-O Grab Bar – K-10701D-CP

Sl. No.

CP Fittings Hindware Jaguar Kohler

1 Piller cock F -380001 PRS-031 K-99452 IN -4-CP

2 Basin Mixture F-380009 CON-167 KNB K-98827 IN-4ND-CP

3 Bib Cock F-380002 CON-041 KN K-16093 IN-4-CP

4 Sink Mixture (Table top)

F-110027 CON-309 KN K-5243 IN-4-CP

5 Angle Valve F-380004 CON-059 KN K-80158 IN-9-CP

6 Shower (200mm round)

F-160044 OHS-1989 K-75924 IN-CP

7 Wall mixture for shower (Exposed)

F-200020 CON-273KNUPR K-98755 IN-4-CP

8 Health Faucet F-160068 ALD-563 K-98100 IN-O

9. Sink (Jayna SBSD 06 Matt

Cobra Nirali

D.2.5 SOLID WASTE MANAGEMENT Solid Waste Management Design Basis as Per NBC 2016 Part-9 Section-3 Norms Waste generated per head = .21 kg per head /day Norm adopted for visitors 30% x .21 = .063 kg per head/day Total solid waste



Solid waste are all the wastes generated envisaged retail buildings, Terminal buildings, concourses etc. such as street sweepings, which are discarded as useless or unwanted. Poor collection and inadequate waste management are responsible for accumulation of solid waste in the development area & unscientific disposal causes adverse impact on all components of environment and human health. Scope and Objectives The broad scope and objectives of the solid waste management are as follows:

Garbage dump adequate size minimum height 4.5m with bins, washing arrangements, flooring Kota stone, minimum 3m high walls with glazed tiles, rolling shutters, poly carbonate roofing, stainless steel mesh above 3m high walls up to ceiling.

To design Solid waste collection & disposal, composting system retail buildings, Terminal buildings, concourses, landscape and hard area.

Estimate solid waste generation from various uses covering main buildings and other areas Indication of major sources of waste – area-wise per tonnage

Identification of collection zones and sub-zones indicating collection points.

Details of final disposal system (Self-Sustained Compositing System & non compostable waste to the municipal waste collection area)

Final plans and system to be approved by the consultant

Types of Solid Waste Food Wastes: Food wastes are the animal, fruit or vegetable residues resulting from the handling, preparation, cooking and eating of foods, which are also called garbage. The most important characteristics of these wastes are that they are highly putrescible and will decompose rapidly, especially in warm weather. Rubbish: Rubbish consists of combustible and non-combustible solid wastes by visitors etc., excluding food wastes or other highly putrescible materials. Typically, combustible rubbish consists of materials such as paper, cardboard, plastics, textiles, rubber, leather, wood and garden trimmings. Non-combustible rubbish consists of items such as glass, ferrous and other nonferrous metals and dirt. Special Wastes: Wastes such as street sweepings, roadside litter, catch basin debris, classified as special wastes. Landscape Wastes: Waste and residues resulting from diverse landscape activities such as the planting and harvesting of tree and shrubs are called Landscape wastes.



Solid Waste Management: Total waste generated as per NBC Waste generated per head = 0.21 kg / day Total waste generated (Residential Block) = 0.21 x12000 = 2520 kg Total waste generated (For Visitors) = 0.063 x 11000 = 693 kg Total = 3213 kg Says = 3300 kg 30% of the waste is organic waste, hence capacity of the compost plant = 3300 x 0.30 = 990kg Says = 1000 kg Provide 1 nos. compost plant of = 1000 kg capacity PNG/LPG Gas Supply to kitchen as per local norms.

To provide separate shafts for Gas to Kitchen as per IGL approval.

FIRE PROTECTION

E.1 REFERENCE STANDARDS

The design and planning of Fire Protection System shall be done keeping in view the following criteria:

National Building Code Sept 2016: Part IV for Fire Protection

UBBL - 2016.

As approved by Delhi fire service.

E.2 BASIS/ CONCEPT OF DESIGN

The firefighting arrangement shall be designed as per the requirement of local guidelines and engineering design standard. The entire fire safety installation shall be compliant with the most stringent codes/ standard for the entire Complex to ensure the highest safety standard and uniformity of system. Further, before property is opened to public, the fire protection shall be fully operated and tested under simulated conditions to demonstrate compliance with the most stringent standards, codes and guidelines.

Following functional system shall be provided; strictly in compliance with the listed reference standards:

a. Piping System : Piping system confirming to IS:1239–MS Heavy Class as per hydraulic calculations

b. Fire water static Storage : 3 x 200 KL or as approved by local chief fire officer

c. Hand held fire extinguishers ABC 6 kg and CO2 4.5 kg

: Strategically placed at designated areas.

d. Clean agent fire Extinguisher with auto discharge mechanism on temperature rise

: 5 kg Ceiling mounted for electrical installation



E.3 Codes and Regulations The fire protection services installation will be designed to comply National Building code - 2016.

E.4 FIRE EXTINGUISHERS Fire extinguishers will be provided at strategic locations and in MEP plant rooms as required by the authority and in compliance with IS 2190:1992. Locations as approved by the fire department. The fire suppression systems and fire extinguishers installed in the buildings shall be free of Halon

E.5 AUTOMATIC SPRINKLER SYSTEM - QUARTZ BULB, 680C System Description Automatic Sprinkler. Sprinklers to be installed above false ceiling in case the clearance between ceiling and false ceiling exceed 800mm The following areas will be protected by the automatic sprinkler system: Basements Retail buildings Residential Building. Piping sizes as per IS Flow switches to be installed at all floor levels to be connected to fire alarm panels through modem

E.6 WATER CURTAIN SYSTEM IN BASEMENTS Maximum area of each compartment 3000 sqmt Basements are to be provided with water compartmentations.

E.7 WET RISER SYSTEM System Description

Internal and external fire hydrant system shall be provided with landing valves, first aid kits, 63 mm x 2 nos, 15 m hose complete with instantaneous pattern short branch pipe in the complex.

All fixtures stainless steel SS-304.

Landing valves 63mm

Hose reels 20mm dia 30m

Breeching inlets at the ground level will be provided for hydrant system also.

Provide Pumping system as per NBC 2016 and as approved by Delhi Fire Service.(Capacities are indicative)

E.8 FIRE PUMPS

Sprinkler pump - 2850 LPM, 165m head - ` 1nos

Sprinkler Jockey pump - 180 LPM, 165m head - 1 nos

Hydrant pump - 2850 LPM, 180 m head - 1 nos

Hydrant Jockey pump - 180 LPM, 180 m head - 1 nos

Water Curtain pump - 2850 LPM, 55 m head - 1 nos

Diesel driven standby pump - 2850 LPM, 180 m head - 2 nos



Hose Cabinet- CRCA sheets 14 gauge, stove enamelled single / double leaf with break glass, signage on glass: break glass in case of fire and cabinet no.

E.9 HYDRANT SYSTEM Internal Hydrant

Each fire hose cabinets will be complete with fire fighting accessories:

Single headed landing valves with 63 mm diameter instantaneous type female Outlet

Two 15m long, 63mm diameter rubberized fabric lined hose pipe as per IS 636. Type 2 with SS male and female instantaneous type coupling as per IS: 903.

One SS branch pipe with nozzle as per IS: 903

First aid fire hose reels with 20mm diameter 36.5m long hose with 5mm bore SS nozzle as per IS:884-1969

One 25mm diameter SS ball valve

Fireman’s axe

Isolation valves 80 mm dia butterfly valve.

Orifice plate 6mm thickness install as per IS 15105 to maintain the pressure 35 meter at each floor.

Yard Hydrant

Yard Hydrant will be housed in CRCA Cabinet and provided as per relevant codes and regulations. The water supply will be from the main delivery header of the hydrant/standpipe pump.

The fire hydrants will be positioned 45m apart to the next hydrant.

All pillar hydrants will be located near the fire engine access/hard-standing.

E.10 SCOPE OF WORK

Domestic water supply.

Treated water Supply.

Sewage and Drain System.

Sewage Treatment Plant.

Storm runoff Drainage System.

Rain water harvesting system recharging underground water Aquifer.

Horticulture/Gardening system.

Piped natural gases.

Solid waste Management System.

The overall design shall be as per perquisite of 3 star GRIHA rating.

Internal & External fire protection System.



LANDSCAPING DBR



TECHNICAL SPECIFICATIONS LANDSCAPE (HARD & SOFTSCAPE) AND HORTICULTURE



Table of Contents

GENERAL DESCRIPTION ........................................................................................................................................... 95

1 HORTICULTURE WORKS ................................................................................................................................. 95

2 LANDSCAPING & PLANTATION WORKS ........................................................................................................ 95

1.0 SPECIFICATION FOR LANDSCAPING & HORTICULTURE ..................................... Error! Bookmark not defined.

1.1 Materials ....................................................................................................... Error! Bookmark not defined.

1.1.1 PLANT MATERIALS ................................................................................... Error! Bookmark not defined.

1.1.2 ........................................................................................................................ Error! Bookmark not defined.

1.1.3 TOPSOIL (GOOD EARTH) .......................................................................... Error! Bookmark not defined.

1.1.4 FERTILISER ................................................................................................ Error! Bookmark not defined.

1.1.5 ROOT SYSTEM .......................................................................................... Error! Bookmark not defined.

1.1.6 CONDITION ............................................................................................... Error! Bookmark not defined.

1.1.7 SUPPLY & SUBSTITUTION ......................................................................... Error! Bookmark not defined.

1.1.8 PACKAGING .............................................................................................. Error! Bookmark not defined.

1.1.9 MARKING .................................................................................................. Error! Bookmark not defined.

1.2 Tree Planting & General Shrub Planting ...................................................... Error! Bookmark not defined.

1.2.1 Tree and Shrub ......................................................................................... Error! Bookmark not defined.

1.2.2 DIGGING OF PITS ...................................................................................... Error! Bookmark not defined.

1.2.3 BACKFILLING ............................................................................................. Error! Bookmark not defined.

1.2.4 PLANTING ................................................................................................. Error! Bookmark not defined.

1.2.5 STACKING ................................................................................................. Error! Bookmark not defined.

1.2.6 TYING ........................................................................................................ Error! Bookmark not defined.

1.2.7 WATERING ........................................................................................... Error! Bookmark not defined.

1.3 Shrub Planting in Planters and Beds ............................................................ Error! Bookmark not defined.

1.4 Grassing ........................................................................................................ Error! Bookmark not defined.

1.4.1 PREPARATION .......................................................................................... Error! Bookmark not defined.

1.4.2 SOIL ........................................................................................................... Error! Bookmark not defined.

1.4.3 SOWING THE GRASS ROOTS ................................................................ Error! Bookmark not defined.

1.4.4 EXECUTION ............................................................................................... Error! Bookmark not defined.

1.4.5 MAINTENANCE ..................................................................................... Error! Bookmark not defined.

1.4.6 ROLING ................................................................................................. Error! Bookmark not defined.

1.4.7 EDGINGS ................................................................................................... Error! Bookmark not defined.

1.4.8 FERTILIZING .............................................................................................. Error! Bookmark not defined.

1.4.9 WATERING ................................................................................................ Error! Bookmark not defined.

1.4.10 WEEDING .............................................................................................. Error! Bookmark not defined.



1.5 Maintenance ................................................................................................. Error! Bookmark not defined.

1.5.1 General ..................................................................................................... Error! Bookmark not defined.

1.5.2 PRUNING & REPAIRS ................................................................................ Error! Bookmark not defined.

1.5.3 TREE GUARDS ........................................................................................... Error! Bookmark not defined.

1.5.4 NURSERY STOCK ....................................................................................... Error! Bookmark not defined.

1.5.5 PROTECTIVE FENCING .............................................................................. Error! Bookmark not defined.

1.5.6 COMPLETION ............................................................................................ Error! Bookmark not defined.

2. SPECIFICATION FOR LANDSCAPING .................................................................. Error! Bookmark not defined.

2.1 Earth work in excavation in all types of soils (i.e. soft loose soil / hard dense soil / moorum / gravel etc.) in foundation, trenches or drain in required width dressing of sides and ramming of bottom including strutting, timbering, shoring and getting out the excavated soil and disposal of surplus excavated earth as directed by the Project-in-charge. .......................................................................... Error! Bookmark not defined.

2.2 Back filling ..................................................................................................... Error! Bookmark not defined.

2.3 SUB GRADE WORKS ...................................................................................... Error! Bookmark not defined.

2.4 HARDCORE WORKS ...................................................................................... Error! Bookmark not defined.

2.5 CONCRETE WORK (CAST - IN - SITU) ............................................................ Error! Bookmark not defined.

2.6 RCC WORK (CAST - IN - SITU) ........................................................................ Error! Bookmark not defined.

2.7 FORM WORK ................................................................................................. Error! Bookmark not defined.

2.8 STEEL REINFORCEMENT ................................................................................ Error! Bookmark not defined.

2.9 BRICKWORK .................................................................................................. Error! Bookmark not defined.

2.10 LIGHT WEIGHT FILLING ............................................................................. Error! Bookmark not defined.

2.11 PLASTERING .............................................................................................. Error! Bookmark not defined.

2.12 WATERPROOF PLASTERING ..................................................................... Error! Bookmark not defined.

2.13 DRAIN BOARD .......................................................................................... Error! Bookmark not defined.

2.14 FINISHES ................................................................................................... Error! Bookmark not defined.

2.15 WATER FEATURES WORKS ....................................................................... Error! Bookmark not defined.

WATERBODY FINISHES ........................................................................................... Error! Bookmark not defined.

2.16 MISCELLANEOUS WORKS ......................................................................... Error! Bookmark not defined.

2.17 IRRIGATION WORKS ................................................................................. Error! Bookmark not defined.

2.18 LIGHTING .................................................................................................. Error! Bookmark not defined.



GENERAL DESCRIPTION

1 HORTICULTURE WORKS The Scope of horticulture work is to provide the whole residential complex with lush green lawns, trees, hedges, shrubs and beautiful flowers so as to provide an excellent ambience of residential-environment and at the same time makes the residential complex environmental friendly and to make a good impression on the residents and public. The contractor has to undertake all such jobs/activities required to maintain the Residential premises in a presentable condition and in above mentioned spirit at all the time whether such activities are elaborated hereunder or not.

The above scope of work Includes designing and its approval from WAPCOS Ltd and executing the work as per drawings.

2 LANDSCAPING & PLANTATION WORKS

While undertaking this work, the contractor shall develop the Party Lawns, Water bodies, Sit outs, Gazebos, Pergolas, Swimming Pool and Deck Gardens, Forest Grove, Children’s and Adult Play Areas, Badminton Courts, Basket Ball Courts, Cricket Nets, Jogging Track, Drop-off areas etc. and other activities mentioned below and as shown in the tender drawings. Basement staircase Mumty, Ventilation and smoke extraction structures at the ground level to be made as landscaped features by enclosing in Trellis & planters as approved by CPWD. Measures for segregating and calming motorized and non-motorized traffic, pedestrian shall be controlled with level differences, Kerbs, dividers, and other traffic controlling measures. Main entrances to the project and the social infra buildings, footpaths, walkways, roads, cycle tracks, jogging parks shall be guarded with Cement concrete bollards as per CPWD specifications. Norms laid down by the Sports authority of India/NIS shall be met for all the sports facilities developed by the agency. The Agency shall submit the detailed working drawings to WAPCOS Ltd along with the Layout, Material and the execution plan for approval before commencing the work.



Landscape Design Components

1. ENTRY/EXIT TO PROJECT

Gated Entries with Guard House details inspired from building elevations and attractive landscape that creates a sense of welcome.



2. ROADS AND DRIVEWAYS

Roads and driveways are to be provided shaded with trees. Medians are to be planted with palms or as shown in planting drawings. Drop off islands are to be also richly planted.



3. PARKING AREAS

Surface Parking areas are to be demarcated with CC Pavers. Parking spots, 2/building block are to be indicated with proper demarcations.



4. BUILDING DROP OFFS

Drop- off areas provided as a Measures for segregating and calming motorized and non-motorized traffic (4500 mm wide) with special paving to create a sense of arrival. Coloured CC pavers laid as shown shall be added. Planting at building entries has to be treated special. Sculptures if space available need to be added also.



5. GROUP IV &V POOL AREA

Large Rectangular pool with Wooden Deck and with Floating Cabanas along one edge and outer planters with tall plants, jaali screens to create a screening effect.



6. GROUP IV &V GREENS

Large Central Lawn, edged by shaded Pergolas on one side and with a coloured garden with rich plantings: shrubs, ground covers weaving into the existing trees and creating a forest like effect. Garden with varieties of colorful plants species which is a visual delight for all the garden users. It has exquisite variety of softscape.



7. GROUP V FRONT GREENS

Palm Court, Central lawn with overflow reflecting water feature that sits on edge of kids and adult play areas.



8. GROUP IV SPORTS AREA

Linear space with Basketball, badminton, play courts and cricket practice. Finish surface as per specification laid down by the Sports authority of India. 4m high Chain link fencing on all sides as required all creating all along central spine an interesting activity zone for the residents.



9. GROUP II &III GREENS

A Linear space with a large Central Lawn edged with a Palm Court and with stepped grassed seatings for larger gatherings, incorporating a Youth Corner with Seatings with Planters, a Circular Kid’s Play area surrounded by grassed mounds and trees.



10. COMMERCIAL AREA

Linear L shaped space defined by building edges and punctuated by a large rectangular patch of existing trees. The linear space is further delineated into informal seating spaces along irregular green patches. A linear waterbody is added to create a relief zone.



11. WALKWAYS

Linear green walkways with rich plantings on both sides offering a variety of experiences for walking.



12. ELEMENTS OF LANDSCAPE DESIGN

Feature Walls:

Pergolas, Covered Walkways, Cabanas:



Sculptures:

Steps:

Sitting areas:



Benches:

Seating under pergola:



Track:

Dustbin:

Wicker Furniture:



Decorative Pots:



Lounger with Umbrella:

Cycle stand:



Fitness area 01:

Play area 02:



Play Area 03:

Play Area 04: