Permanent diversion of existing 250mm deep gravity sewer main at Jawahar Road by rerouting with 250mm gravity sewer main from Kambar Street to Ashokar Street in Depot 70, Area VI

Supply, delivery, laying and jointing of Double wall corrugated / structured wall plastic polyethylene/polypropylene pipes DWC PE or PP of class SN-8 with non-smooth external Annular Corrugated and Smooth Internal Surfaces in Standard lengths with online coupler and spigot type confirming to IS 16098 (Part-2) 2013 / EN 13476-3 (latest revision) including elastomeric sealing ring gasket suitable for DWC PE or PP pipes conforming to IS 15382 (latest revision), freight insurance, loading into the truck and transporting to the stores/site, etc., including earth work excavation in hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stony earth and earth mixed with small size boulders and hard gravelly soil, depositing the earth on banks with initial lead of 10m and lowering into trenches, aligning and testing of DWC PE or PP pipes, watering and ramming to consolidation, etc., complete.

295/250mm OD/ID DWC PE or PP Pipe – at 1.5m deep

295/250mm OD/ID DWC PE or PP Pipe – at 2.0m deep

Supply, delivery, laying and jointing of Double wall corrugated / structured wall plastic polyethylene/polypropylene pipes DWC PE or PP of class SN-8 with non-smooth external Annular Corrugated and Smooth Internal Surfaces in Standard lengths with online coupler and spigot type confirming to IS 16098 (Part-2) 2013 / EN 13476-3 (latest revision) including elastomeric sealing ring gasket suitable for DWC PE or PP pipes conforming to IS 15382 (latest revision), freight insurance, loading into the truck and transporting to the stores/site, etc., including earth work excavation in hard stiff clay, stiff black cotton, hard red earth, shales, murram, gravel, stony earth and earth mixed with small size boulders and hard gravelly soil, depositing the earth on banks with initial lead of 10m and lowering into trenches, aligning and testing of DWC PE or PP pipes, watering and ramming to consolidation, including timbering the trenches for depth 2.5 m and above, pumping out subsoil water etc., complete.

295/250mm OD/ID DWC PE or PP Pipe – at 3.5m deep

Cement concrete 1:3:6 using Crushed stone sand (M-sand) and 40 mm gauge hard broken stone jelly & SRC for plain cement concrete works including laying in layers of not more than 15 cm thick, compacting, curing eetc complete for encasing and end concrete

Construction of Precast circular RCC machinehole using sulphate resistant cement with M30 design mix concrete using Crushed stone sand (M-Sand) including earthwork excavation as per SS20B including timbering and pumping charges (for 25m depth and above), supplying & filling sand for bedding, providing plain cement concrete 1:1.5:3 using 20mm B.G. jelly for foundation, providing base units of 1m height (base slab and sidewall), riser unit (without corbel) of varying heights to suit the various depth requirements and roof slab including cost of steel reinforcement, cost of fabricating the steel mould using MS sheet and ISA angles including material and labour cost, providing CI steps, fixing FRC manhole frame and door, benching and channelling, refilling with excavated earth and disposal of surplus earth, joining of precast units by grouting with CM 1:1 and polyurethane based waterproofing compound 1% (by weight of cement) at shear key and protruded bars-grout holes locations, cost of conveyance and erection charges of precast manhole at the required position as directed by the Engineer at site including testing the manhole with water for 48 hours to check watertightness and rectifying the defects if any for the following sizes and depths.

1200mm dia Circular Machine Hole for Sewers (upto 450mm dia) – at 1.5m deep

1200mm dia Circular Machine Hole for Sewers (upto 450mm dia) – at 2.0m deep

Construction of RCC manhole using sulphate resistant cement with M30 design mix concrete using Crushed stone sand (M-Sand) including earthwork excavation as per SS20B, providing point edge to well kerb for sinking using ISA 150x75x10mm weighing 16.9kg/m, sinking well kerb below 2.0m from G.L. or by open excavation for various depth as per site conditions with M30 mix for side wall, raft and roof slab, including cost of steel reinforcement, including bailing and pumping out water, formwork, plugging the bottom with PCC 1:3:6 using 40mm hard broken granite jelly, laying plain cement concrete 1:3:6 using 12mm to 20mm hard broken granite jelly for fixing the frame, fixing FRC manhole cover and frame, providing CI steps, benching and channelling, including refilling the trenches with excavated earth and disposal of earth etc., including testing the manhole with water for 48 hours to check water tightness and rectifying the defects if any for the following sizes and depths of machineholes.