Provision of additional Earth mat for various feeders and equipments of 230/110 KV Kayathar Sub-Station Under PSDF-II scheme in Tirunelveli Operation Circle. Under works contract basis

Amount

Supply of Materials

65*10mm MS Flat (4103 Mtrs (1 Mtr=4.9kg)

40Mm MS Rod (Rounds 545 Mtrs( 1 Mtr=12.6Kg)

Works

Labour, Machinary, Consumables for fabrication,Erection of Earth Mat,Earth Connection,Earth Electrode, Earth Spike (including sharpening of Earth spike ) as directed by field engineer

Labour for excavating and refilling of earth /trenches for earth mat, cable etc of any aize/depth narrow excavation as directed by the field engineer(Normal clay/hard gavel soil

Labour charges for providing earth spike with G.I pipe including fabrication of base frame,painting and fixing as per departmental specification,excluding cost of G.I pipes,M.S Flats,base angles., etc.

providing Earth bore 140/150 mm dia using power rig or 100/125mm dia using hand bore set including the labour, lead, lift etc sedimentary strata of clay and sand stone shale pebbles boulders etc, for earth pits with supply and providing of bentonite powder( sodium bentonite- 5 kg/mtr depth of the bone mixed with low resistivity earths as directed by the field engineer.(Total no of earth pit=45 per pit depth- 6 mtr

Supply Charges for providing of 450-600 mm dia, 300mm height, 36mm thick cement colar top cover for identification of eartyh electrode location as directed by the field engineer

Fabrication, supply & fixing of Earth pit detail board including the cost of 20SWG CR Sheet,10mm RTS Rod ,T &P etc., complete.