SPECIAL REPAIR/ REPLACEMENT FOR RENEWAL OF EARTH PITS AT VARIOUS PLACES AT COMNETCEN BUILDING UNDER AGE(I) NAVY CHENNAI

Amount

M&L for New earthing complete with chemical Copper plate earth electrode 900X600X5 mm thick buried directly in ground (earth pit not less than 3.6 meter below ground level) with top edge of the plate not less than 2.7 metre below normal ground level connected to 32x6mm copper strip at two points by means of bolts and nut, check nut and washers including Chemical Ground enhancing material compound for Chemical earthing around 30 cm of the copper plate and necessary excavation in hard/dense soil, returning filling in and removal of surplus soil to a distance up to 50metres, PCC pit in 1:3:6 type C1 (using 20mm grade stone aggregate), RCC 1:2:4 type B-1 (using 20mm grade stone aggregate ) 50mm thick pit cover, reinforced with 8mm dia TMT bars 75mm c/c, both ways MS handle 12mm dia, GI funnel, wire mesh and GI watering pipe of 20mm bore GI (light grade) and earth lead protection pipe 40mm bore (light grade) all as specified, directed and shown in electrical plate No 3 of SSR Part-I including testing complete. Note : Copper strip and protection pipes 40 mm GI light grade up to 7.5 metre is included in unit rate and beyond that the same will be measured separately.

M&L for New earthing complete with Copper plate earth electrode 600X600X3 mm thick buried directly in ground (earth pit not less than 2.25 meter below ground level) with top edge of the plate not less than 1.5 metre below normal ground level connected to 20x3mm copper strip at two points by means of bolts and nut, check nut and washers including charcoal dust, common salt, necessary excavation in hard/dense soil, returning filling in and removal of surplus soil to a distance up to 50metres, PCC pit in 1:3:6 type C1 (using 20mm grade stone aggregate), RCC 1:2:4 type B-1 (using 20mm grade stone aggregate ) 50mm thick pit cover, reinforced with 8mm dia TMT bars 75mm c/c, both ways MS handle 12mm dia, GI funnel, wire mesh and GI watering pipe of 20mm bore GI (light grade) and earth lead protection pipe 40mm bore (light grade) all as specified, directed and shown in electrical plate No 3 of SSR Part-I including testing complete. Note : Copper strip and protection pipes 40 mm GI light grade up to 7.5 metre is included in unit rate and beyond that the same will be measured separately.

M&L for New earthing complete with galvanised steel plate earth electrode 600X600X6mm thick buried directly in ground (earth pit not less than 2.25 meter below ground level) with top edge of the plate not less than 1.5 metre below normal ground level connected to GI strip 25X4mm at two points by means of bolts and nut, check nut and washers including charcoal dust, common salt, necessary excavation in hard/dense soil, returning filling in and removal of surplus soil to a distance up to 50metres, PCC pit in 1:3:6 type C1 (using 20mm grade stone aggregate), RCC 1:2:4 type B-1 (using 20mm grade stone aggregate ) 50mm thick pit cover, reinforced with 8mm dia TMT bars 75mm c/c, both ways MS handle 12mm dia, GI funnel, wire mesh and GI watering pipe of 20mm bore GI (light grade) and earth lead protection pipe 40mm bore (light grade) all as specified, directed and shown in electrical plate No 3 of SSR Part-I including testing complete. Note : GI strip and protection pipes 40 mm GI light grade up to 7.5 metre is included in unit rate and beyond that the same will be measured separately.

M&L for New earthing complete with galvanised steel plate earth electrode 600X600X6mm thick buried directly in ground (earth pit not less than 2.25 meter below ground level) with top edge of the plate not less than 1.5 metre below normal ground level connected to GI wire 4mm at two points by means of bolts and nut, check nut and washers including charcoal dust, common salt, necessary excavation in hard/dense soil, returning filling in and removal of surplus soil to a distance up to 50metres, PCC pit in 1:3:6 type C1 (using 20mm grade stone aggregate), RCC 1:2:4 type B-1 (using 20mm grade stone aggregate ) 50mm thick pit cover, reinforced with 8mm dia TMT bars 75mm c/c, both ways MS handle 12mm dia, GI funnel, wire mesh and GI watering pipe of 20mm bore GI (light grade) and earth lead protection pipe 20mm bore (light grade) all as specified, directed and shown in electrical plate No 3 of SSR Part-I including testing complete. Note : GI strip and protection pipes 20 mm GI light grade up to 7.5 metre is included in unit rate and beyond that the same will be measured separately.

Dismantling / taking down old rusted copper strip / GI strip/ Al strip/GI wire from any height or situation complete all as specified

S&F for Copper strip 32x6 mm on wall/batten or recessed or buried in ground all as directed

S&F for Copper strip 25x4 mm on wall/batten or recessed or buried in ground all as directed

S&F for GI strip 25x4 mm on wall/batten or recessed or buried in ground all as directed

S&F for GI wire 4 mm on wall/batten or recessed or buried in ground all as directed

S&F for Copper wire 10 Sq mm single core on wall/batten/pipe or recessed or buried in ground all as directed

S&F High density polyethylene pipes (HDPE) of pressure rating 6 kgf/cm2 laid in trenches and on wall of size 40 mm bore for erection of lightening conductor and protection for earth strips ete and including short lengths, with all pipe fittings such as ends, elbows, unions, tees, reducing tees, adopters, sockets, plugs, hose clips etc. and fixing to walls etc. complete with saddles (snap clips), wall clips, hooks, protective mild steel tube sleeves and cutting through walls, floors and their making good or laying in trenches and also cutting, screwing and waste complete as required and directed.

S&F High density polyethylene pipes (HDPE) of pressure rating 6 kgf/cm2 laid in trenches of size 15 mm bore for erection of lightening conductor and protection for earth strips ete and including short lengths, with all pipe fittings such as ends, elbows, unions, tees, reducing tees, adopters, sockets, plugs, hose clips etc. and fixing to walls etc. complete with saddles (snap clips), wall clips, hooks, protective mild steel tube sleeves and cutting through walls, floors and their making good or laying in trenches and also cutting, screwing and waste complete as required and directed.

S&F porcelain insulator heavy duty of required size not exceeding than 10 cm long with two nos hole each on both end for fixing properly with nuts & bolts on wall of buildings for separated to lightining conductor or earthing stirp from building all as required at site & directed by engineer in charge. Note : The distance between two insulators fixed on the wall not more than 1 mtr lenght all as directed.

M&L for painting on wall with synthetic enameled paint of black colour of 200 x 150 mm size and writing work for earth test result with date & year all as specified and directed at site.

M&L for Test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hex. head screw all as directed.

SRI LAKSHMI ASSOCIATES

GK ENTERPRISES

S.M.THIYAGARAJAN AND CO

VIJAYALAKSHMI ENTERPRISES