tender for work of replacing 14 out of 16 pvc water tanks located on the roof of mla niwas-1 and the remaining platform. - demolishing r.c.c. work manually by mechanical means including stacking of steel bars and disposal of unserviceable material within 50 metres lead as per direction of engineer - in- charge. d.s.r no-15.3 2 demolishing brick work manually/ by mechanical means including stacking of serviceable material and disposal of unserviceable material within 50 metres lead as per direction of engineer-in-charge. in cement mortar. d.s.r no-15.7.4 3 providing and placing on terrace (at all floor levels) polyethylence water storage tank, is 12701 marked, with cover and suitable locking arrangement and making necessary holes for inlet, outlet and overflow pipes but without fittings and the base support for tank. dsr no- 18.48 4 providing and fixing ball vale (brass) of approved quality.high or low pressure with plastic floats complete. 25 mm nominal bore dsr no- 18.18.3 5 providing and fixing of cpvc union of 25mm dia nominal size of approved quality as per directed by engineer-in-charge. 6 providing and fixing ofpvc tank connector of 25mm dia nominal size of approved quality as per directed by engineer-in-charge. 7 providing and fixing ofcpvc reducer socket (brass) of 30mm dia nominal size of approved quality as per directed by engineer-in-charge. 8 providing and fixing ptmt ball cock of approved quality, colour and make complete with epoxy coated aluminium rod with l.p/h.p.h.d. plastic ball. 25 mm nominal bore, 152mm long, weighing not less than 440gms. dsr no- 18.62.3 9 structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting hoisting, fixing in position and applying a priming coat of approved steel primer all complete.(d.s.r no-10.2) 10 disposal of moorum/building rubbish/ malba/ similar unserviceable, dismantled or waste material by mechanical transport including loading, transporting, unloading to approved municipal dumping ground for lead upto 10 km for all lifts, complete as per directions of engineer-in-charge. dsr-1.1.18