Military Engineer Services Tender

M&L in replacement of earthing complete with galvanised mild steel earth plate electrode 60cmx60cmx6mm thick, burried directly in ground preferably in vertical position (Earth pit not less than 2.25 mtr below ground level) with top edge of the earth plate not less than 1.5 mtr below normal ground level, connected to galvanised iron strip 25×4 mm by means of bolts, nuts, check nuts and washers of galvanised iron including pit of PCC (1:2:4) type B-1, pre cast RCC cover slab of size 550x550x75mm, XPM reinforced not less than 1.60Kg/Sqm with suitable built in handle made from 12mm dia MS round bar, excavation and earth work in any type of soil, 20mm dia bore medium grade galvanised iron water tubing fixed with cast iron funnel and wire mesh at one end, 15mm bore light grade galvanised iron protection pipe for earth lead wire upto 5m length, charcol, common salt complete all as shown in electric plate No 3 of SSR 2009 Part I connected to equipment, testing on completion, complete all as specified and directed.

M&L in replacement of earthing complete for bldg with galvanized mild steel earth plate electrode 60cm x 60cm x 6mm thick buried directly in ground (earth pit not less than 2.25 meters below ground level) with top edge of earth plate not less than 1.5 meters below ground level connected to galvanized earth wire 4.00 mm dia by means of nuts, bolts, thimbles, chuck nuts, washers of GI or steel, PCC (concrete chamber of size 300 mm x 300 mm x 300 mm inside dimension) shall be PCC 1:3:6 type C-1 using 20mm graded stone aggregate with fair finish , internal surface of concrete chamber shall be given 15mm thick plaster in CM 1:4, funnel with wire mesh of 22 gauge, 80 mm thick PCC pit cover 320 mm x 320 mm of RCC 1:2:4 type B-1 using 20 mm graded stone aggregate reinforced with XPM, JALLI pit shall be filled with charcoal dust and common salt all as shown in electrical plate No 3 of MES SSR Part-I (2009) as specified including provision of 15mm dia medium grade GI pipe for earth wire protection and 20 mm dia for watering complete , all excavation and earth work & connecting the earthing to an earthing test point / main switch board as specified and testing on completion, complete all as specified and directed.

All as per description of item 2 above but for earthing of machinery/equipment Installed at power house/substation, using 25 x 3 mm copper strip and copper plate of size 60×60cm ×3.15mm, as earth electrode, complete all as specified and directed.