Repair/replacement of GI/CI water supply distribution pipe lines from main reservoir to BOS, LSNS, USNS Adm area, 28 Camp and 25 Camp including connected works at Yol Mil Stn

Excavation in trenches n.exc 1.5 metre wide and n.exc 1.5 metre deep and getting out in hard/dense soil, complete all as specified and directed.

Returning filling in including spreading leveling, watering and well ramming in layers n. exc 25cm, complete all as specified and directed.

Removal of excavated material to be distance n.exc 50 metres and depositing where directed at a level n.exc 1.5m high from the starting point, complete all as specified and directed.

Cutting/boring of roads for laying of pipe of any type and size and making good road by providing soling with broken boulders or quarried stone, WBM of existing thickness and finally topping with bituminous macadum of existing thickness (bituminous macadum comprising of stone chipping and cold emulsion as per manufacturer's instructions) including necessary compaction by rolling etc. to match existing, complete all as specified and directed by Engr-In-Charge.

M & L for cleaning of water storage tank under ground type having size 3mx3m and height 2m of capacity 4000 gallons ltre capacity at USNS near slate godaam. The cleaning shall be carried out by taking cut all scale, dirt and gravel deposited at the bottom and removing sludge at a distance not exc 15m from the top circumference of the tank complete with water by adding bleaching powder to remove moulds, fungus etc and making it neat and clean, complete all as specified and directed by Engr-In-Charge.

M & L for Cleaning of uderground storage water tanks/ sump having of size of tank 25.70 metres x 45 metres and height 5.70 metres of capacity 9.24 lakhs gallon from inside taking out algee scale, dirt and gravel deposited at bottom of tank and to be disposed off to a distance not less than 15 metres from top circumference of tank including cleaning and removing sludge, algee from existing gallery of beds and removing moulds, fungus etc with water mixed with bleaching powder, complete all as specified and directed by Engr-In-Charge.

All as per Srl item No 6 above but of size of tank 18.80 metres x 12.60 metres and height 2.90 metres with partition walls of capacity 75000 gallons including back wash tank and intake chambers, complete all as specified and directed by Engr-In-Charge.

All as per Srl item No 6 above but set of 2 Nos of sedimentation tank of capacity 75,000 gallons, complete all as specified and directed by Engr-In-Charge.

Cleaning of underground/ semi underground tank of capacity 1.5lakh/2.0 Lakh gallons by adopting following method :- (a) Taking out the water from the sump with the help of Monoblock/Submersible pum set and removing accumulated sludge and solid particles etc. deposited at the bottom of sump and removing the same to a distance not exceeding 15 mtr away complete all as specified and directed. (b) washing with clean water bleaching powder sollution by rubbing with wire brush on all side walls, dome portion and bottom of the tank and removing grits and other deposited materials complete inside and from the outside of sump complete all as specified and directed.

M & L for Cleaning of semi uderground water storage tanks/ sump of capacity 50000 gallons, Boot chowk from inside. Cleaning shall be carried out by taking out algee scale, dirt and gravel deposited at bottom of tank and sludge to be disposed off to a distance not less than 15 metres from top circumference of tank including cleaning with water by adding bleaching powder removing moulds, fungus etc, and maikng it clean complete all as specified and directed by Engr-In-Charge.