repair / maintenance of external water supply distribution pipe lines at hq igar east. 1 providing, laying and fixing 100 mm dia g.i. pipe ( medium class ) in ground complete with g.i. fittings including trenching ( 75 cm deep ) and re-filling etc as required including taking down old deteroriated gi pipe all as specified and directed. 2 providing and fixing 100 mm c.i. sluice valves ( with cap ) complete with bolts, nuts, rubber insertions etc. 3 s&f ballvalve of 20mm dia ( brass ) of approved quality, high or low with plastic floats complete all as specified and as directed. 4 material and labour for installation of monobloc pump set of capacity 0.5 hp in outlet from sintex tank, including complete fittings and connected pipe lines all as specified and directed by engr-in-charge 5 material and labour for replacement of wall mixture tap 3 in 1 with shower, easy to control the flow of hot and cold water mix through the tub spout, including porvision of over head shower, with 115 mm long bend pipe and flange complete all as specified and directred by engr-in-charge. 6 material and labour for replacement of wash basinmixture tap 2 in 1easy to control the flow of hot and cold water mix through the tub spout, flange complete all as specified and directred by engr-in-charge. 7 material and labour for dismantling the existing suction pipe lines at pump house no 1 to make the main suction point deep, providing temporary suction line through flexible pipe and connected items for continuous water supply complete all as specified and directed by engr-in-charge 8 material and labour for making the main suction point deep by digging inside the water, making a suction pit of size 4mx4mx2m, securing the edges by providing sand bags complete all as specified and directed by engr-in-charge. 9 material and labour laying sand bags at the edges of the pit, including providing coarse sand and filling the same in sand bags ( 600 nos ) complete all as specified and directed by engr-in-charge. 10 providing and fixing 25mm dia upvc pipes, having thermal stability for water supply including all upvc plain & brass threaded fittings this includes jointing of pipes & fittings with one step upvc solvent cement, trenching, refilling & testing of joints complete as per direction of engineer in charge for external work complete all as specified and directed 11 providing and fixing 20mm dia upvc ) pipes, having thermal stability forwater supply, including all upvc plain & brass threaded fittings, including fixing the pipe with clamps at 1.00 m spacing. this includes jointing of pipes & fittings with one step cpvc solvent cement and testing of joints complete as per direction of engineer in charge exposed on wall