Summer training report

Summer training report on construction of multi-storeyed residential flats in

presentation submitted by• Raj Vaibhav Singh• Roll no 1236300084• (CE 4th year)• Ambalika institute of management technology

Project highlightSite location

About marg group• incorporated in 1994, MARG Group today successfully operates the fully

functional ‘MARG Karaikal Port’ having a current capacity of 21 MMTPA. In addition, the Group has developed 1.2 Mil sqft of residential space, delivered 1200 homes and has a customer base of over 4000. The Group is executing 21 major projects worth more than Rs 3800 crores in varied domains through its EPC division. Major developments include a 1.85 million sq.ft. integrated development – 'MARG Junction Mall' and a unique 23 million sq. ft. integrated industrial and services township, 'MARG Swarnabhoomi'.

• MARG Group is one of India's fastest growing infrastructure organizations and is listed by Dun & Bradstreet as among "India's Top 500 Companies 2011".

Project synopsis

• Name of project• Location of the project

• Client

• Contractor• Construction area• Built up area• No. of towers

Himalya enclaveLucknow Uttar pradesh

Up housing and developing boardMarg ltd6352 sqm32500 sqm3

featuresTower name

NO’S SUPERBUILT UP AREA(sqm)

configuration

D3 52 627.843 3 BHK+S,S+13

C3 52 576.033 3BHK,S+13

B5 104 785.223 2BHK,S+13

Site layout

PLAN OF BUILDING

CONTRACT DETAIL

• Date of start• Date of completion• Built up area• Cost of project• Earnest money• Completion time• Performance bank

guarantee• Security deposit

19/09/201310/12/20153250069 crores75 lacks27 months5% of contract value for a period of 3 yr. 6 month5%of contract amount shall be deducted in running bills

NAME OF WORK

• E,P & C of multi storeyed residential finished houses including basement based on rcc monolithic shear wall concept using aluminium framework in Himalaya enclave in sec 17 vrindavan yojana, lucknow including soil testing, structural design and all site internal development complete in all respect ready to move in for living condition.

Construction sequence• Survey and soil test• Excavation test pile • Piling• Retaining wall• Pile cap beam & stilt• Basement shear wall & stilt• Base roof slab & stilt• Mock up• Floors• Mep &fire fighting • finishing

Quality management system

Quality management

system

Quality control

Quality assurance

Field quality plan• This plan is document which is submitted by contractor in tender document• Some important test are given below

tests frequency

Cube test (concrete) 6 m3 of concrete (6 nos. cubes)

Slump test Every lot

Temperature Every lot

Sieve analysis (aggregate) Daily

Moisture content(aggregate) Daily

Flakiness index Weekly once

Specific gravity Once in 3 months

Elongation index Weekly once

Silt content Daily

Water absorption Once in 3months

Bulk density Change of source

Cement testing Every lot

Silt content daily

Quality control labA q.c. lab with well equipped apparatus is present where previous test are carried

1.slump cone testA slump test is a method used to determine consistency of concrete. The consistency, or stiffness, indicate how much water has been used in mix. For pile , slump should be 165 mm

Cube testing• This test is done to check the compressive strength of casted

concrete or mixed in respective proportions and poured in cube mould. The cubes are then oven dried the cubes are then cured for 28 days. The cubes strength for 3 days,7 days, 28 days curing are recorded. The cubes are tested in compression testing machine or universal testing machine. The test result corresponding to 28 days curing gives the grade of concrete

Impact test

• This test done to determine the aggregate impact value of coarse aggregates as per is:2386 (part 4)-1963. the apparatus used for determining aggregate impact value of coarse aggregate is impact testing machine conforming to is:2386(part4)-1963, is sieve sizes -12.5mm, 10mm, and 2.36mm, A cylindrical metal measure of 75mm dia and 50mm depth, a tamping rod of 10mm circular cross section and 230mm length, rounded at one end and oven.

ImpactApparatus

Sieve shaker

temping rod cylindrical metals

Project execution• SurveySurvey is the first step done in any construction site so as to get the required level of the surface. Survey in the site is carried out by two instruments.

Auto level Total stationAuto levelAuto level is optical instrument used toEstablish or check point in the same horizontalPlane. It is used in surveying and building toTransfer, measure, or set horizontal levels.in theSite, it used for excavation works and levelling.Least count of auto level is 5mm.

Total stationTotal station is an electronic theodolite (transit) integrated with an electronic distance meter(EDM) to read slope distances from the instrument to a particular point. points for the piling are given by the total station. In this site, 5 benchmarks are established.While giving the point for pile, we take back sight reading after setting the total station. Then we start giving points for pile. The least count of total station is +2

PILING• Piling is the type of deep foundation. bored cast-in-situ

R.C.C. pile was caste for the construction purpose.• specification

Length of pile below C.O.L. 30 meter

Diameter of pile 600,750 mm

Type of pile Cast-in-situ(installation)End bearing pile(function)Concrete pile (material)

Grade of concrete M-30

Design safe load(compression) 180 MT

tower 750mm dia pile 600mm dia pile NO. of piles

D3 99 14 113

C3 106 - 106

B5 140 - 140

TOTAL PILE 359

PILE DRIVEN MACHINES Truck mounted rotary machine Rig machine

Rotary machine

Rig machine

Process in piling

boring

Washing and cleaning

reinforcement

concreting

boring• After marking the point from total station, the first

process is to bore the hole up to 3 meter and after 3 meter, the boring will take place with the help of water jet fitted on the top of the machine which convey the water from the bore pipe.

as per soil condition sodium bentonite used to avoid collapsing of the soilGenerally 5-6 bags of bentonite bags are used for boring 31.20 meters.Why sodium bentonite?

Excellent collidel properties Self-sealing Low permeability carrier

Cleaning of bore holes

When the bore has been completed then cleaning of bore hole is done with the help of water jet fitted over the top of the TMR/DMC rod . Washing is done till the soil suspended particles has been removed from the water.

reinforcementAfter washing, reinforcement has been placed. The reinforcement has been break up in to 4 parts 12,8,7,6.6 meter.800 mm is lapping between the two section of reinforcement.

Description of reinforcement

name Diameter of bar

No’s spacing

Vertical bars 16 16 108 mm

Master bars 12 32 1000 mm

Helical ring 8 209 150 mm

Cover : 75 mm

concreting

Concreting for bored pile is done by tremie method Site data:

Length of tremie pipe: 3 m, 1.5m Diameter of tremie pipe: 220mm, as per IS2911

(part1/sec2), the dia of the tremie pipe should not less than 200mm

slump: 165mm Cement content: 415 kg/m3 Grade of concrete : M30

Time & costactivity Time taken (in hrs)

boring 4.0 (depend on soil condition)

washing 1.0

reinforcement 2.0

Tremie pipe (fixing) 1.0

casting 1.0

The above data is of tmr machine. The main difference as compared with ring machine with respect to time is it take 8 hrs. for boring while TMR machine takes 4hrs depends on soil condition

Project drilling time

• Project drilling time (pdt) = N* TDT days 60 WHWhere,N= no. of pilesTDT= total drilling timeWH= working hoursTaking data of D3 tower,N= 113 pilesTDT= 4 hrs/hole = 240 min/holeWH= 7hrs/day

Project drilling time (pdt)= 113*240 days = 64.5 days 60*7So, the project drilling time of D3 tower in this site is 64.5 days.

cost

• Calculation of cost of one pile

activity Cost(R s.)

Bore (1000/meter) 31000

Reinforcement (rs.47/kg) 49068

M-30 concrete 81000

total Rs. 161068/pile

Retaining wall• In this site, cantilever retaining wall is constructed. Cantilever

retaining walls are constructed of reinforced concrete. They consist of a relatively thin stem and a base slab. The base is also divided in to two parts, the heel and toe. The heel is the parts of the base under the backfill. The toe is the other part of base.

• North direction: 71.25 meter• West direction: 102.69 meter• South direction: 41.13 meter• East direction: 40.66 meter• Grade of concrete: M-25 • Expansion joint 50mm every 40 meter.

Concrete Forms Construction of Reinforced Concrete Walls.mp4

Let take a look on video

Construction equipment planning

s.no. equipment Peak requirement

Immediate requirement

Available

1 Concrete batching plant

1 1 1(30 cum/hr)

2 Transit mixture 4 6 4

3 D.G sets 1 1 2

4 Dewatering & curing pump

4 4 4

5 Concrete pump 2 2 2

6 trailers 2 1 2

Marg equipment’s1.Transit mixture2.Concrete pumps3.Concrete batching plant4. Vehicle5. jcb

function of equipment

1.concrete pump They are used to pump concrete to various places (above and below ground level) he capacity of the pumps used to depends on height to which concrete is to be pumped. The capacity of the pump also depend on the mix design. The concrete used should be pump able concrete i.e. concrete having slump value 140mm or more.2.Transit mixtureIt transport the ready mix concrete from the batching plant to the site. The capacity of transit mixer is 6m3, but only 5 m3 of concrete is filled to prevent overloading

Batching plant

A batching plant has been set up 4km from the site in order to meet the concrete requirement for the site. Batching plant helps in reducing the cost of concrete as compared to procuring it from an outside source. It also give the freedom to design the mix at will.The ideal production capacity of the batching plant is 30m3 of concrete in one hour, but practically it produce 25-26m3 of concrete in one hour. The fine and coarse aggregates are transferred using conveyor belts. The opening to the skip bucket are controlled by hydraulic jacks. As the required quantity of fine and coarse aggregates fall into the skip bucket, the opening close and the bucket is taken up, and the concrete are emptied into the mixer drum. The capacity of the mixer drum is 0.5m3.OPC cement, aggregate and fly ash are stored in three different silos. The required amount of cement and fly ash are mixed along with the correct proportion of plasticizer (epex adplax GFH), Water and aggregate fore30 seconds and fresh concrete get poured in to transit mixer which transports the concrete to the site.

Site views

Present condition of building

Any query please…………..

Thank you