tender for repair / replacing of waterlines / fittings leading to oht and damaged pvc water tanks at ocf estate ; 1 supplying and fixing rotational moulded polyethylene water storage tanks ( cylindrical vertical with closed top ) hoisted and fixed in position all as specified in ssr part i ( capacity- 500 lit ) make: aquatech, sintex, infra. 2 supplying and fixing rotational moulded polyethylene water storage tanks ( cylindrical vertical with closed top ) hoisted and fixed in position all as specified in ssr part i ( capacity-1000 lit ) make: aquatech, sintex, infra. 3 material and labour for tubes medium grade 25mm bore, galvanized with all fitting and fixed complete to walls and ceilings. 4 material and labour for tubes medium grade 20mm bore, galvanized with all fitting and fixed complete to walls and ceilings. 5 fixing in repairs of switch flush type 15a single pole one waycleaning and removing all scale and dirt etc from the water tanks of capacity exceeding 250 lit & not exceeding 500 lit as directed at site by e-i-c. 6 cleaning and removing all scale and dirt etc from the water tanks of capacity exceeding 500 lit & not exceeding 1000 lit as directed at site by e-i-c. 7 cleaning and removing all scale and dirt etc from the water tanks of capacity exceeding 1000 lit & not exceeding 2000 lit as directed at site by e-i-c. 8 cleaning of underground sumps by removal of the silt from the bottom, cleaning the internal surfaces of walls free from all dirt, dust ect, washing with bleaching powder, white washing one coat of internal surfaces all as directed by eic.capacity- 1.80 lakh lit. 9 cleaning of underground sumps by removal of the silt from the bottom, cleaning the internal surfaces of walls free from all dirt, dust ect, washing with bleaching powder, white washing one coat of internal surfaces all as directed by eic.capacity- 3.75 lakh lit. 10 cleaning of over head reservoir by removal of the silt and cleaning the internal surfaces of walls free from all dirt, dust etc washing with bleaching powder, white washing one coat of internal surfaces all as diected by eic. capacity - 4.50 lakh lit. 11 cleaning of over head reservoir by removal of the silt and cleaning the internal surfaces of walls free from all dirt, dust etc washing with bleaching powder, white washing one coat of internal surfaces all as diected by eic.capacity - 2.70 lakh lit. 12 cleaning of back wash sump by removal of the silt and cleaning the internal surfaces of walls free from all dirt, dust etc washing with bleaching powder, white washing one coat of internal surfaces all as diected by eic. 13 cleaning of sewage sump 20ft depth by removal of the silt and cleaning the internal surfaces of walls free from all dirt, dust etc washing with bleaching powder, white washing one coat of internal surfaces all as diected by eic. a ) capacity - 1.50 lakh lit.