Suvarna Siddhi- Plumbing

7/31/2019 Suvarna Siddhi- Plumbing

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Technomax Consulting Services

Design Report Plumbing System


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PROJECT SUMMARY

Project Name: Suvarna Siddhi

Architect: Dhiraj Walunj

Project Type: Residential Apartment

No. of Floors: Stilt +3 Floors

No. of Flats : 12 Nos. of 830 Sq.ft. and 2 Nos. of 1120 Sq.ft.

DESIGN PHILOSOPHY:

Proposed development plan is to enlighten the effective andefficient infrastructure systems like:

i) Water supply and distribution systemii) Sewage and waste water disposal system

iii) Storm water disposal system

SCOPE:Scope covers following major system designs:

i) External water supply network and Internal water distributionsystem

ii) Internal waste water and soil pipe network up to street manhole.

iii) External sewage pipeline network with man holes and disposalup to existing municipal trunk line.

iv) Rain water run-off collection, conveyance and final discharge inrecharge pit.v) Solid waste Management.

SYSTEM DESCRIPTION IN BRIEF :

Water supply:

Existing Water supply demand will be catered by following sources:i) Municipal Water Connection Primary source of waterii) Existing Bore Well - Secondary/Emergency source of water

Sewerage System:

The waste water generated from apartments will be conveyed tonearby external collection system through nearest manhole.

Storm water Drain:

The run-off from built-up area, open space, roads, green area etc.will be collected in pipe drain and conveyed to existing municipalstorm water drainage connection.



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INFRASTRUCTURE SYSTEM

1.0 BASIS OF DESIGN:

2.1 DESIGN GOALS:

Effective and efficient infrastructure System is to be designed sothat proposed water supply, Sewerage, storm water system etc.will work without any trouble with maintenance in comfortableconditions.

Proposed system components offered will have:

Higher efficiency to achieve a desired Performance.

Minimum power consumption, and with less maintenance.

Easy to operate and maintain.

Minimum noise level with least vibration.

Reliable, Simple, Compact, Modular and Interchangeablesystems.

Better Environmental conditions.

On the basis of preliminary architectural drawings, discussion anddetails provided by client / architect, following actual siteconditions and the assumptions made, load estimation is made andsubsequent system design is evolved.

2.0 SCOPE :

The scope covers following major facilities:1. External water supply piping network with appurtenances2. Internal plumbing fittings & sanitary fixtures3. Internal soil / waste water & rain water drainage4. External sewer with inspection chambers and manholes.5. Roof drainage along with road surface drainage.6. External storm water system7. Solid waste Management

3.0 CODES AND STANDARD:

Engineering components configuration and design of the proposedsystem will generally follow the following codes and standards.

IS CODE DESCRITION

National Building code 1983 1997 (Group5, Part IX)

Plumbing Services

CPHEEOWater Manual,

Sewage Manual



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IS CODE DESCRITION

IS : 1172 1983Water Supply & Drainage

Services

IS : 1239 1979 (Part I)

IS : 1239 1969 (Part II)Plumbing General Practice

IS : 8034 / 1976 (Fresh / Bore Water)

5659 / 1970 (Process Water)

5600 (Sewage/ Drainage)

1520-60 & 5120-68 (Centrifugal pumps)

IS : 9079 (Mono-block Pumps)

Pumps

IS : 778 & IS : 14846 Valves

IS : 651 1971Drainage General Sewage

Disposal

IS : 4985 1988 PVC Piping & Fitting

IS : 1729 CI Piping



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5.0 PROPOSED DESIGN PHILOSOPHY

5.1 DURING DISCUSSION, THE FOLLOWING DATA ANDREQUIREMENTS WERE ASSESSED:

For each Apartments following amenities to be provided:

2 Bathrooms

1 Servants balcony Provision for Washing machine outlet in common bath

Sink in kitchen area with provision for RO Plant provision

6.1. WATER REQUIREMENT:

6.2.1. DOMESTIC WATER REQUIREMENTTable no 1

6.2.2. LANDSCAPING:


Block No. ofUnits

(Family)

Typeof

Unit

Population Base

TotalPopulation

Water

Requiredper

capita/

per day

TotalWater

Required

TotalSewage

Generation

Per/

FamilyPersons Litre/day

80% of

Total Water

Consumptio

n

G+3

Storeyed

Apartments

142

BHK5 70 200 14000 11200

14 - - 1368 135 14000 11200

Total Domestic Water Requirement

Say 14000

L/D 14 11200 L/D


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6.2.3. TOTAL WATER REQUIREMENT:

ZONE I ZONE II


U

nits

Garden

Area M

Ltr/

Day LPD

Garden of Apartment 46 x 57 = 2508 @ 5 = 12540

(GF + 3) units

Central Landscape Area Approx = 4000 @ 5 = 2000032540

Say 32500 L/D

32.50 M/d

Garden of Row Houses 44 x 29 = 1276 @ 5 = 6380

(GF+1) units Villa

Central Landscape Area Approx x = 1400 @ 5 = 7000

13380 L/D

Say 13500 L/D

Total Water Requirement for landscaping 32500

13500

46000 L/D


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G + 3 Apartment Row Houses &Commercial

Domestic 149040 35640

Landscaping 32540 13380

Commercial - 11000

Fire - 25000*

Total 181580 85020

Say 181m Say 85 m

This will be one time filling and hence this quantity will not bereflected in total water demand

6.2.4. WATER DISTIBUTION SCHEME

Main Tapping from Existing 200mm DI Gravity Transmission

Main

Apartments

3-BHK-GF+3 Storey 23 Blocks-184 flatsTapping from External System

Over head Tank Tank- 10,000 lit

Villa

3-BHK GF-1 Storey Row Houses

Tapping from External System

Ground Level Storage-1000 litPumping System

Overhead Tank-1000 lit

Commercial Complex

Tapping from External System

Ground Level Storage

Domestic-11,000

Pumping System

Overhead Storage

Domestic- 11000,liter.



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Land Scaping

Direct Connection from External System, where ever required asper land scaing planning

6.0 FIRE WATER :

Built Up area = 4182 m 25000 liter capacity OHTank on each blockcommercial blockIs fall in table 23 NBC Fire/ Life safetyArea exceeding 500 m

As per N.B.C section IV of part I, the aforesaid building falls undergroup F Mercantile group, sub- division F-2 shops, stores andoffices with area more than 500 m2.

Recommended norms for fire fighting in a mercantile building.

As per NBC fire safety requirement for A-4 Apartment houses

PARTICULARSGF + 2 Provided by

consultant

Type ofInstallation

Fire ExtinguisherRequired Provided

Hose Reel Required Provided

Dry riser Not Required Not Provided

Wet Riser Not Required Not Provided

Down comer Required Provided

Yard Hydrant Not Required Not Provided

Automatic SprinklerSystem

Not Required in view ofnon provision ofbasement

Not Provided

Manually operatedElectric fire alarmsystem

Required Provided

Automatic detection andalarm system Not Required Not Provided

Water supplyin ltrs.

Underground staticwater storage tank

Not Required Not Provided

Terrace tank 25000 Ltrs. Provided

Pump capacity

At the terrace tank levelwith minimumpressure of 2.0kg/cm2

Not required Provided

7.1. DESIGN BASIS CALCULATIONS:



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Basic reference for fire and life safety designs from NBC. &Tariff advisory committee (TAC) rules.

Reference: Table No 23 Group F Mercantile Building (A)

Underground Tank Capacity

(m)

Overhead Tank Capacity

(m)

Not Required 25

7.2. SCOPE:

The scope of work for the proposed system will involve thefollowing:

Fire water storage at roof top

Fire Pumps

7.3 SYSTEM DESCRIPTION:

Overhead tank with capacity of 25m (static storage) is proposedon terrace in two compartments- one-each for fire fighting &domestic. Water will be supplied from existing ESR tank to UG Tankfor commercial blocks. From UG tank, water will be pumped to firewater compartment, from which water will overflow to thedomestic storage.container

Fire pump will be electrically driven centrifugal pump. Diesel drivenpump set is also provided. In case of power failure, the pumpingsystem will switch over automatically to DG set through auto mainfailure (AMF) Panel.

Fire extinguisher, hose reel, down comer, will be provided at allstaircase landings. Also street side Stand post type Fire Hydrantsalso re commanded at selected spots.

Manual operated electric fire alarm system at common area like

lobby, passages, entry & exit places are proposed. The travelingdistance for a person to reach manual call point should not bemore than 30mtrs.

8.0 SEWERAGE SYSTEM

Internal System:

Sewage disposal system for soil and waste water will be based onmost efficient, functional and economical. Two pipe systems (wasteand soil) will be provided to carry soil and waste water from

building under gravity. Waste water pipes are to be connected toinspection chamber or manhole through gulley trap and soil pipes.The vertical down take pipe will be extended upward up to terrace



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level for ventilation purposes and will be provided with ventilatingcowl.

External System:

The waste water generated in each individual household will becarried to inspection chamber, ultimately to be conveyed to roadboundary manhole. The external collecting system covering wholeproject area will be provided in road shoulder. Client has fixedgeneral road level between R.L 86 to R.L.87.30 for entire projectarea. This fact has been kept in mind while system development.Manholes are provided at convenient distance on need basis. Thewaste water generated will ultimately be taken to exiting M.H (B) ofULB located near Ratanda Circle about 550m away from West sideboundary of Phase-II

The proposed road formation levels in development plan for

apartments in South side are falling from West to East, (RL 87.30 toRL 86.30) that is in reverse flow than general configuration slopefrom East to West, which helps in gravity flow for all remainingdrainage area. Due to this specific reverse slope, in a length ofabout 110 m, deeper excavation will be necessary to achieverequired slope. This is brought to notice.

Further, in South area, one block of Villa and Commercial complexare proposed, the levels are dropping rather in South, which do notallow gravity flow as compared to remaining project area. Hereintroduction of one pumping station will be necessary with low

head pumping along with short length of rising which will conveywaste water to near by gravity system MH

As informed, the details of ULB sewer M.H are as under.Size : 5*6 ft

Depth: 12 ftInvert level: RL 79:555 m with size of sewer 3 ft

Sewage Disposal:

Waste water generated from entire project area is to released intoULB collecting system in the MH located near Ratanda area.

8.1. CODES AND STANDARDS

National Building Code (NBC)

CPHEEO Manual for sewerage system

Hand book of water supply & drainage by BIS

CPHEEO Manual along with Central Govt. guidelines and Hon.Supreme Court directives for Solid Waste Management.

.



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9.0 SOLID WASTE MANAGEMENT

CODES OF STANDARDS & DESIGN BASIS

National Building Code (NBC)

Manual of Solid Waste

Guideline rules prescribed by Supreme Court

During daily human activities, considerable quantity of solid wasteto generated. The waste in general is of organic and inorganicnature. The classification of materials can at under

Food waste

Rubbish

Ashes and residues

Special wastes

General Source of Generation :

Residential - Apartment Food waster, rubbish, ashes,special waste

Commercial - Storm, Shops etc food wastes, ashes,demolished and constructional waste

Open areas - Street, alleys etc Special wasterubbish as well as vegetative wastes

Street sweeping - Soil dust, paper waste and assorted

various types of wastes

Government as well as Hon. Supreme court has laid down certain normsand rules for collection, storage, conveyance, treatment and final

disposal of solid waste. The pattern of generation has beenanalyzed by NEERI and has come up with an yard stick to assessand calculate per capita generation of Solid waste under Indianconditions. These norms are adopted for assessing total likelygeneration of solid waste in Phase II project.

ESTIMATE OF WASTE GENERATION

SR. NOTYPE OF STRUCTURE OCCOUPANCYGENERATION

gm/c/dayGENERATION Kg /

day

1 2 3 4 5

1 Row Houses 264 350 92.40

2 Apartments 1056 350 369.60

3 Commercial 400 150 61.50

4 Street sweeping 1720 100 172

Out of total estimated quantity, about 40 to 50% can be organicwaste, remaining recyclable and inert. It is necessary thatsegregation by way of two bags system may be resorted to at each



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generation points, so that further processing can be smoothlyhanded. It will be necessary to provide small capacity containerseither static or movable at strategic places to store solid waste,which then can be transferred and removed for treatment anddisposal.

For such a small quantity to go for in house management systemwill not be viable from economic and management point of view.Hence it is advised to have a suitable tie-up with local authority formanagement of solid waste.

10.0 STORM WATER SYSTEM & RAIN WATER HARVESTING

The area is arid. From the rainfall data supplied from 1988 to 2008,the following facts are revealed:

Rainfall is mostly received in months of June, July, Aug, and

sometimes in September. The maximum / minimum rainfall in a mouth is summarized

as under.

MAXIMUM MINIMUM

Mouth Rainfall (mm) Mouth Rainfall (mm)

June 88 173 June 2001 03

July 90 496 July 06 44

Aug 92 317 Aug 93 06

Sept 06 137 Sept 95 01

The value of maximum rainfall in decade is 820 mm, (1990) whilethat of minimum 232 mm (1993). As per analysis done by IndianMeteorological Department, the maximum intensity of rainfall fordifferent span period years for Jodhpur area is as under:



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Frequency Max Intensity mm/hr

50 year 70

5 year 40

2 year 30

The system is designed on evaluating such data.

The client has constructed a very large water body in a form ofstep well in phase I project in an area called Navchowkia. The rainrun-off of Phase II is to be drained to this step well for storage andpossibly recharging. No any recharging system other than this isproposed at this stage.

Assuming maximum intensity at rainfall per hour as 30 mm (beingarid area) the run-off from different built up area and open area is

assessed as under.

The run-off is be calculated using rational formula as under

Q = 10 x A x K x I, underQ = Run-off in cum / hrA = Area in hectorK = co. efficient of run-offI = max. rain fall intensity mm/hour

Run-off Calculation

Structure surface

A inha

k I Q

Civil structure Terrace cm / hrcm /

mint

Row house Terrace 0.46 0.8 333 0 11 0.18

Apartment Terrace 0.64 0.8 ,, 15.36 0.26

Commercial Terrace 0.1 0.8 ,, 2.4 0.04

Roads / paving 0.85 0.5 ,, 12.75 0.22

Open space /Landscapeing

1.0 0.3 ,, 9 0.15

Tentative formation levels of finished road are finalized. On thebasis of such levels, the storm water line is aligned from West to



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East because of ultimate discharge point being step well. The villaand commercial complex located in South side being rather atlower levels, it may not be possible to drain the run off to step wellpossibly by gravity. Hence there is possibility of introducing apumping station at lower level i.e. round about R.L 84 or 85. Therun-off will be collected in a sump of capacity say 2 hours Low headpump will discharge run-off into a nearest man hole of parentgravity system. During non-monsoon period, the pumpingmachinery can be removed after due servicing and kept safely instore room.

RCC nP3pipes are provided as per decision taken on06- 07 09. Necessary provision is made for manhole andcatch pits. As regards Villa located in the East direction, due toplanned steep slope of road, this area will be drained by gravity byprovision of depressed catch] pits and not by providing anyunderground pipeline.

All the run off will be drained from West to East mostly by gravity

with ultimate point of discharge being step well located in Phase 1area through existing MH of stormwater drain of Phase 1

ESTIMATE

Estimates are . prepared taking into cosideration prevailing ratesin Gujarat state Contigency is considered at 5% on estimated cost,which is normal prevaling practice.It is likely that on getting finalarchitecture drawings,there can be every possibility in cost

structure modification.

RECATULATION OF INFRASTRUCTURE COST

EXTERNAL

Water Supply System------------------Rs. 16,70,842

Sewarage System-----------------------Rs. 27,68,500

Storm Water System-------------------Rs. 18,63,750

Total--------------------------------------Rs. 63,03,092

Add 5 % Contigency-------------------Rs. 3,15,150

Total--------------------------------------Rs. 66,18242

Say----------------------------------------Rs. 66 lac20 thousand

INTERNAL

Water supply, Waste drainage (soil and waste), Cold / hotwater and Storm Water

Cost-----------------------------------Rs. 3,96,31,562Add 5 % contigency---------------Rs. 19,81,578

Total Gross--------------------------Rs. 4,16,13,140



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Say------------------------------------Rs. 4 Crore17 lacs

GRAND TOTAL---------------------Rs. 66.20+ 417== Rs 483.20Lac


Suvarna Siddhi- Plumbing

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