Chennai Metropolitan Water Supply And Sewerage Board Tender

Construction of RCC machinehole 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 using ISA 150x75x10mm weighing at 16.9kg/m,sinking well kerb below 2m from G.L.or by open excavation for various depth as per site condition 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 frame, fixing FRC machinehole cover and frame, providing CI steps, ,benching and channelling including refilling the trenches with excavated earth and disposal of earth etc. Including testing the machinehole with water for 48hours to check water tightness and rectifying the defects if any complete. 500mm dia & above at 6.0m depth

Drilling of borewells of size 6" to 8" dia in Sedimentary formation using hand boresets including insertion of casing pipes supplying and packing of pebbles and conveyance of hand Boreset including loading and unloading

Drilling a hole to the collection well

Labour charges for inserting PVC casing pipes assembly (with slot or without slot) in the drilled hole including welding the joint etc., complete and supplying and packing the annular space with pebbles of size and quality as approved by the Executive Engineer.

Supplying 150mm dia pvc pipe for bore

Hire Charges for diesel pumpset upto 7.5 HP a) Pumping from one manhole to another manhole

Hire Charges for diesel pumpset upto 5 HP Pumping from one manhole to another manhole

Hire Charges for diesel pumpset upto 3 HP Pumping from one manhole to another manhole

Barrication work along one side of the trench for laying the pipe line with casuarina post at 1.52m centre to centre (8 to 10 cm dia. and 1.52m height) verticals, painting the vertical posts in different colours, tieing with coir rope, fixing danger flags, danger lights, reflectors including watching during night for 1 metre.

Providing and removing dummies on both Upstream and down stream side of manholes and removing the same after completion of work by adopting with all safety precautionery measures at a depth of 6.5m

Using gunny bag for arresting seepage water,rendroxplug cement for quick settting and labour etc complete..,

Supplying mechanical joint coller for CI/DI pipe 500mm dia