RETAINING WALL CONSTRUCT PROCESS AND ITS CHECKING POINTS

RETAINING WALL CONSTRUCT PROCESS AND ITS CHECKING POINTS

Retaining walls  –

Are structure used to retain soil, rock or other materials in a vertical condition. Hence they provide a lateral support to vertical slopes of soil that would otherwise collapse into a more natural shape.

Most common materials used for retaining walls are:

1)Wood sheets;

2)Steel and plastic interlocking sheets;

3)Reinforced concrete sheets;

4) Precast concrete elements (crib walls and block walls); – Closely spaced in-situ soil-cement piles;

5)Wire-mesh boxes (gabbions);

6)Anchors into the soil or rock mass (soil nailing).

Work Instructions:-

1) HOD D&D to issue approved drawings i.e. layout done with total station, working drawings, cross Section of wall & detail drawings,Study of drawings.

2)Demarcation & line out by surveyor on site with total station.

3)Take the original ground levels.

4)Excavation up to hard strata & dewatering if required.

5)Take the excavated levels for estimation & billing purpose.

6)PCC as a leveling course.

7)RCC retaining wall as per the RCC Consultant drawing approved by HOD D&D. Shuttering for raft slab & pardi.

8)Cutting, binding of reinforcement at the place for raft & pardi. Tie precast covers 50mm & 40mm for raft & pardi respective.

9)Casting of the raft slab in required grade of concrete.

10)Use of tie rod system for shuttering, shuttering for RCC pardi up to 4’0” height at a time with proper supporting from inside & outside by m.s. props at 45°.

11)Casting of pardi in required grade of concrete.

12)Curing.Hacking for expose surface where plaster is required.

13)Double coat sand faced plaster with grooves & design approved by HOD D&D. Curing.

14)Painting as per the project theme.

Environment:-

1)During excavation sprinkle the water to reduce dust and prevent air pollution.

2)G.I. sheet as barricading to reduce noise level of machineries.

Health & Safety:-

1)Use helmet & safety shoes.

2)Before digging check underground utilities like water, gas & electricity etc.

3)Ensure snake bite kit is available in case of emergency.

4)First aid box with medicines available at site.