REPAIRS/ MAINTENANCE OF EXTERNAL WATER SUPPLY PIPE LINES, PUMP SETS, VALVES AT VARIOUS LOCATIONS AT ARO GUNTUR UNDER AGE (I) SURYALANKA

Amount

S&F in Rotational moulded polyethylene water storage tanks of 500 Ltr Capacity (cylindrical vertical with closed top) hoisted and fixed in position all as specified in SSR Part I including dismantling water tanks and removing to store complete all as specified and as directed.

S&F in replacement PP-R Tank Connector of Size 25mm complete all as specified and as directed.

S&F in replacement PP-R Brass FTA of Size 32/25 mm x 1" (Thread must be suitable for insertion of 20mm Float valve) complete all as specified and as directed.

S&F in replacement of PVC Ball cock of size 20 mm with aluminuim rod and Ball complete all as specified and as directed.

S&F 63mm outer dia, ISI marked 3-layer PP-R polypropylene random copolymer pipes SDR 7.4 (PN-16) UV stabilized and anti-microbial welded having thermal stability for hot & cold water supply including random fittings, Reducers, TEE, unions laid in trenches including taking up/down existing unserviceable pipes complete all as specified and as directed.

All as per Item No. 5 above but of size 32 mm outer dia

All as per Item No. 5 above but of size 25 mm outer dia

S&F in replacement of PP-R Gate valves of Size 63mm complete all as specified and as directed.

All as per Item No. 8 above but of size 32 mm outer dia

All as per Item No. 8 above but of size 25 mm outer dia

De-watering the existing OH Reservior of capacity 5000 Ltrs at 9 mtr staging and cleaning the internal surfaces to remove scales, mud and other foreign materials, applying surfaces with mixture of bleaching powder and water, finally washing with fresh water and treating with one coat of white wash to internal wall and bottom surfaces etc complete for one time, writing in capital letter with black paint as "Cleaned on (date) & next due on (date), letter's height not less than 5cm complete all as specified and as directed. Note :- The unit rate quoted shall deemed to be included for the following :- (a) 250 gm of bleaching powder to be used for every 10 litre of fresh water. (b) All the inlet/outlet/over flow/ wash out connection shall be cleaned as rust free and any leakage in joints shall be made good. (c) The water available in the Reservior shall be bailed out to the nearest open drain available. (d) Any damage caused during cleaning the existing assets, same shall be made good by the contractor without any extra cost. e) The quoted rate is inclusive of arrangement of necessary Scaffolding/ ladders required for above work.

Excavation in trenches not exceeding 1.5 m wide and not exceeding 1.5 m in depth and getting out in soft/ loose soil, for under ground electric cable, pipes etc. all as directed and specified.

Returning, filling-in, including, spreading, watering and well ramming in layers not exceeding 25 cm thick each, in soft /loose soil complete all as specified & directed.

M&L for connection of 63/32/25 mm PP-R distribution branch with PP-R main of following sizes by providing and fixing tee including cutting and making fusion joint etc.

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