Repairs and leakage maintanance of water supply pipeline works at 7 places of trunk road 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.

Cutting C.I./D.I Pipes true to axis and filing smoothly and finishing the ends complete -250mm dia C.I./ D.I Pipes

Removing the burst C.I./ D.I pipes from the pipe line and removal of slushy soil and baling out water and replacing the pipeline with sound pipe including jointing and cost of refilling the pipeline 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. -250mm dia C.I./ D.I 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-200mm dia pvc 6 ksc pipe

200mm dia pvc coupler

200mm dia pvc Bend

200mm dia pvc Elbow

200mm dia pvc Tee

Lowering PVC/ DWSC rigid pipes and specials to trench and laying to proper grade and alignment, jointing with PVC couplers with cement paste.

Jointing the C.I/ D.I-S/S pipes and specials with neat cement or cement mortar and spun yarn including caulking the joints, curing. (including cost of jointing materials)

Refilling with excavated sand complying with standard specification for filling in foundation and basement