CONSTRUCTION AND OPERATION AND MAINTENANCE FOR 5 YEARS OF UNDERGROUND SEWERAGE SYSTEM TO LEFTOUT AREAS AND ADDED AREAS OF NORTH VAIGAI IN MADURAI CITY MUNICIPAL CORPORATION

Schedule - 1 - Collection System Earth work excavation and depositing on bank with initial lead of 10m and initial lift of 2m in hard stiff clay, stiff black cotton, hard red earth, shales murram, gravel, stoney earth and earth mixed with small size of boulders as directed by Departmental engineer. 0 to 2m depth

Earthwork excavation and depositing on bank with initial lead of 10m and initial lift of 2m in Soft Disintegrated Rock, laterite, soft rock or kankar, not required blasting as directed by Departmental engineer. 2 to 3m depth

3 to 4m depth

4 to 5m depth

Providing shoring and strutting with sheet piles/wooden piles & planks, with necessary support for excavation beyond the depth of 2m, including the cost of sheet piles, wooden piles, plank & other materials, removing shoring and strutting after the pipes are laid etc. complete for 2 above as directed by the Engineer in charge. 0 to 2.0m depth

Laying of Double Wall Corrugated High Density Poly Ethylene Pipes to proper grade and alignment, cutting the pipes true to axis to the required alignment and slope as indicated in drawing/design and hydraulically testing the pipe to the required pressure as directed by the departmental engineer including Labour charge etc,. complete as per specifications at different depths. 200 mm Dia Up to 2m

200mm Dia 2m to 4m

200 mm Dia 4m to 6m

250 mm Dia Up to 2m

250mm Dia 2m to 4m