Others-Urgent replacing damged 400mm dia SW main and man hole at Moolethoppe bridge in Kairali nager under shasthamangalam Sewerage Section-Sewerage Work

100.1.1:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth up to 1.5m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50m, in all kinds of soil.

100.1.2:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth exceeding 1.5m but not exceeding 3m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50m, in all kinds of soil.

100.1.3:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth exceeding 3m but not exceeding 4.5 m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20 cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50m, in all kinds of soil.

100.1.4:Excavating trenches of required width for pipes, cables, etc., including excavation for sockets, and dressing of sides, ramming of bottoms, depth exceeding 4.5m but not exceeding 6m, including getting out the excavated soil, and then returning the soil as required, in layers not exceeding 20cm in depth, including consolidating each deposited layer by ramming, watering, etc., and disposing of surplus excavated soil as directed, within a lead of 50m, in all kinds of soil.

OD20103/2026-2027:Laying & installation of HDPE- 400 MM dia, PE-80, (PN-8)- IS-14333 pipe by horizontal directional drilling method in all types of soil above/rock/below water table up to 8m depth for gravity sewer including preparing, and setting up the plant and equipment , installing new pipe work, testing and commissioning excluding cost of pipe all related civil/mechanical works like entry/exit pits as necessary. De watering, drilling, stringing, reaming, pulling back the new pipe on the designed alignment and monitoring by approved guidance system. Wastage of pipes, proper disposal of drilling fluid/bentonite slurry. Proper back filling of pit and holes by approved borrow material as per specification, approved method statement or as directed by Engineer in charge

4.1.5:Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level:1:3:6 (1 Cement : 3 coarse sand (zone-III) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources)

OD139165/2026-2027:Providing steel sheet shoring to the sides of the trenches to depths up to 4.00m using 5mm M.S. Sheet 0.50m wide stiffen on edges with 50mm x 50mm x 6mm M.S. angles driving down vertically on either side one after another in lines and levels with suitable pile driving equipment's and accessories to a maximum depth of 0.50m below the bottom of the proposed excavation 0.50m above ground level suitably braced by horizontal walling pieces at 75mm x100mm x 8mm angles on either side at intervals not exceeding 1.50m and horizontal screw jack type struts at 1.50m intervals and maintaining the shoring till the pipes are laid and works are completed, dismantling, cleaning and re stacking for reuse including all labour, hire charges and conveyance for equipment's, tools and plants and sundries etc. complete.

100.6.1:Providing steel sheet shoring to the sides of the trenches to depths of above 4.00 m but not exceeding 6.00m using 6 mm M.S. sheet 0.50 M wide stiffen on edges with 50 mm x 50mm x 6 mm M.S. angles driving down vertically on either side one after another in lines and levels with suitable pile driving equipments and accessories to a maximum depth of 0.50 M below the bottom of the proposed excavation 0.5 M above ground level suitably braced by horizontal walling pieces at 75 x 150 mm x 8 mm angles on either side at intervals not exceeding 1.50M and horizontal screw jack type struts at 1.50M intervals and maintaining the shoring till the pipes are laid and works are completed, dismantling, cleaning and restacking for reuse including all labour, hire charges and conveyance for equipments, tools and plants and sundries etc. complete.