Operation, Maintanance and repaires of water supply works at Ward No.1 to 21 in Poonamallee Municipal Area.

Earth work excavation and depositing on bank with initial lead of 10 m and lift of 2 M in narrow trenches for laying of pipes for water supply in the following type of soils as directed by departmental officers. Sand, silt or other loose soil, wet sand or silt not under water light black cotton soil, sandy loam and ordinary soil. Hard stiff clay, stiff black cotton, hard red earth, shales, murram gravel, stoney earth and earth mixed with small size boulders and hard gravelly soil.(DATA)

Removing the burst P.V.C. Pipes from the pipe line and removal of slushy soil and baling out water and replacing the pipe line with sound pipe including jointing and cost of refilling the pipe line with water for retesting the pipe line etc., complete (excluding cost of sound pipe and jointing materials and earth work) and as directed by the TWAD Board Officers A) 90mm dia (OD) PVC pipes

B) 110mm dia (OD) PVC pipes

C) 140mm dia to 160mm dia (OD) PVC pipes

D) 180mm dia to 200mm dia (OD) PVC Pipes

Supply and Delivery of Following Water supply Maintenance Materials including cost and conveyance of Materials as per TWAD Board, PWD schedule of rates.etc complete a) 90mm dia pvc 6 ksc pipe

110mm dia pvc 6 ksc pipe

160mm dia pvc 6 ksc pipe

200mm dia pvc 6 ksc pipe

90mm dia pvc coupler

110mm dia pvc coupler

160mm dia pvc coupler

200mm dia pvc coupler

90mm dia pvc Bend

110mm dia pvc Bend

160mm dia pvc Bend

200mm dia pvc Bend

90mm dia pvc Elbow

110mm dia pvc Elbow

160mm dia pvc Elbow

200mm dia pvc Elbow

90mm dia pvc Tee

110mm dia pvc Tee

160mm dia pvc Tee

200mm dia pvc Tee

80mm dia GI G.M Gate valve

100mm dia GI G.M Gate valve

125mm dia GI G.M Gate valve

Brass chromium plated screw down Tap 15 / 12mm Dia (Heavy Type)