providing and fitting of g i pipes along with associated works required for connecting newly constructed service reservoir at wss amirabad- 1 providing / supplying and fitting of g.i flanged rising main at site. the pipe shall be hot dip galvanized, class b , nd 80 mm confirming to is 1239. the job includes providing and fitting of m.s flanges conforming to bis 6392 / 1997 table 17 ( rating pn16 ) . the flanges shall be double welded both from inside and outside of the pipe using standard electrode of reputed make.flanges ( as per is 6392 / 1997 table:17 ) thickness shall conform to is 6392 part 1st table-17. the flange welding shall be carried out in double layers using reputed make electrodes to form strong welding joint.welding electrodedc arc welding using welding electrode having diameter not less than 4mm.nuts and boltsnuts and bolts ( conforming to is:1363 part 1st ) rubber insertion gasketsrubber insertion gaskets ( conforming to is: 638 / 79 ) to be used between flanged joints. the main technical specifications of the pipe are given here under: 2 earth work in excavation by manual means in trenches for foundation , drains , pipes , cables ( not exceeding 1.5 m in width ) and for shafts , wells , cesspits and the like not exceeding 10 sqm on plan , including dressing of sides and reaming of bottom lift upto 1.5 m , including getting out excavated earth and disposal of surplus excavated earth as directed. all kinds of soil 01 meter from cutting edge ) 3 filling available excavated earth in trenches, plinth, sides of foundation etc.in layers not exceeding 20 cm in depth , consolidating each deposited layer by reaming and watering , lead upto 50 m and lift upto 1.5m 4 fitting of available 80 mm dia.g.i pipe. the job includes shifting of pipes by manual meansaverage distance 200mincludingproviding and fitting of nuts, bolts and r.i gasket required for the job 5 fabrication, providing and fitting of y- junction having 1m length ( approx. ) of each arm to be fabricated out of hot dip galvanized g.i, b-class pipe. the job also includes providing and welding of m.s flanges to the ends of each arm. the thickness of flange shall conform to is 6392 part 1st table-17. the flange welding shall be carried out in double layers using reputed make electrodes to form strong welding joint by dint of dc arc welding. the job further includes providing and fitting of nuts and bolts ( conforming to is:1363 part 1st ) and rubber insertion gaskets ( conforming to is: 638 / 79 ) to be used between flanged joints. the size of the y- junction is given below : dn 80 mm 6 cutting of hot dip galvanized g.i, b-class pipe across the section by dint of pipe cutter / gas cutter. the job also includes providing and welding of m.s flanges to the two ends of pipe. the thickness of flange shall conform to is 6392 part 1st table-17. the flange welding shall be carried out in double layers using electrodes to form strong welding joint by dint of dc arc welding. the job further includes providing and fitting of nuts and bolts ( conforming to is:1363 part 1st ) and rubber insertion gaskets ( conforming to is: 638 / 79 ) to be used between flanged joints 7 providing and fitting of, ductile iron double flanged, non-rising spindle soft seated glandless gate / sluice valves as per is14846 for regulating the water supply outside the pumping units .the body and bonnent of the valve shall be of ductileiron, wedge with fully vulcanized epdm rubber ( approved for drinking water ) and nbr seal. the gate / sluice valve shall be compatible for buried applications and shall be safe to install in both horizontal and vertical positionsit shall have electrostatic epoxy coating ( approved for drinking water ) both inside and outside of the valve. the valve shall be supplied along with hand wheel.cost on account of nuts, bolts, gaskets, etc required for the job is included in the scope of work.the job includes providing and fitting of 02 nos. m.s flanges ( table flanges ) perfectly adaptable to the inbuilt flanges of the valve which shall be fitted with rising main of the pumping unit at appropriate spots as per site requirement. the job includes the cost on account of p / f of nuts, bolts and gasket required for the job. 8 fabrication , providing and fitting of90-120 degree bend / elbowto be fabricated out ofclass c , dn 80 mm gi pipe, 1 m lengthand flanged on both ends ato make it leak proof. the flanges shall be m.s flanges conforming to bis 6392 / 1997 table 17 ( rating pn16 ) and welded on both sides. the job includes nuts, bolts, gaskets etc as per site requirement.