BY ABHISEK PANDAREGD NO.-110301CER058

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KEY PLAN OF THE PROJECT

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DETAILS OF THE PROJECT

Client Municipal Corporation, Jalandhar Construction agency M/S Gammon India Ltd. Type of contract Item rate Total length of ROB 1.65 Km Cost of the project Rs 20 crores Contract period 15 months Starting date 28-06-2004

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COMPANY PROFILE Gammon India Limited is one of the leading

construction companies in India today. The company was established by late Mr. J. C.

Gammon in 1919 as a firm of Civil Engineers & Contractor.

Gammon's capabilities cover the entire spectrum of technological advances in bridge engineering.

Besides designing and building bridges, Gammon has achieved perfection in the techniques of launching, underwater concreting development of supporting equipment.

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EQUIPMENTS USED AT SITE

Needle type vibrator (60 mm dia) Concrete pump (56 m³/hr)

Gantry girder ( 60 ton) Transit mixer (7 m³ capacity)

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EQUIPMENTS USED AT SITE

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FOUNDATION : PILES Piles are long slender members that carry and

transfer the load of the structure to the ground located at some depth below the ground and the earth surrounding the piles.

Bored cast in-situ friction RCC piles of diameter 1000 mm.

M35 grade of concrete was used at our site.

Average depth of the piles was 20 m. 8

PIER CAP

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CONCRETE MIX PROPORTION FOR PILE CAP

Different grades of concrete were used for the bridge construction.

M35 was used for the pile cap. Steel used : Fe 415. Cement used : Vikram cement (OPC 53 grade) Aggregates used : 10 mm, 20 mm and sand. Admixture used : FORSOC CONPLAST SP

430.

Cement : Sand : Coarse Aggregate = 1 : 1.36 : 3.24

CementCement W/C W/C RatioRatio

Water Water Sand Sand 20 mm20 mm 10 mm10 mm Admixture Admixture

400 400 kg/mkg/m³³

0.370.37 148 148 kg/mkg/m³³

684 684 kg/mkg/m³³

592.5 592.5 kg/mkg/m³³

592.5 592.5 kg/mkg/m³³

0.40.4

11 0.370.37 1.361.36 1.941.94 1.31.3 0.0010.001

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PROJECT NO. 2

SUPERVISION OF THE SUPERSTRUCTURE

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Pretensioned I-GirderPretensioned I-Girder

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Methodology for the construction of I-Girder: Methodology for the construction of I-Girder:

1.1. Preparing the shuttering:Preparing the shuttering:

Bearing plates Dowel barsBearing plates Dowel bars

Groove made for bearingsGroove made for bearings

Bearing plate

dowels

grease

Dowel bars

200 mm length

Outer dia 50 mm

Inner dia 22 mm13

2. Lowering of the reinforcement cage: Gantry girder : 60 ton and 35 ton

3. Cable threading:

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Reinforcement cage

cables

Wedges and

barrels

4. Stressing:

Least count of the pump : 5 kg/cm².

5. Closing of the side shutters

6. Concreting:

Automatic batching plant

Needle type vibrator : 60 mm dia

Concrete pump : 56 m³/hr

7. Deshuttering:

After 24 hrs

CementCement W/C W/C RatioRatio

Water Water Sand Sand 20 mm20 mm 10 mm10 mm Admixture Admixture

435 435 kg/mkg/m³³

0.300.30 130.5 130.5 kg/mkg/m³³

652 652 kg/mkg/m³³

741 741 kg/mkg/m³³

494 494 kg/mkg/m³³

0.8%0.8%

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Concrete coming out of the pipe line

Deshuttered beam

8. Destressing

Using the grinder.

9. Lifting of the girders

10. Curing

For next 25 days at least.

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Hessian cloth

Cables after

cutting at top

Cables after cutting at bottom

BOX GIRDER

I-girders can be used only for the spans smaller than 20-25 m or which are

not curved. For curved spans and spans which are greater than 20-25 m, box

girders are used. 17

SAFETY REQUIREMENTS

1. Training the workers.

2. Providing the first aid.

3. List of nearby hospitals.

4. Safety manual.

5. Banners.

6. Using the safety equipments.

7. Providing the vehicle.

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