Provision of new Earth pit and replacement of damaged earth pits in 230 KV and 110 KV yard of 230/110 KV Pugalur SS under PSDF scheme-II

Amount

M S Flat 65 x 10mm

M S Round 40 mm dia

Labour, machinery, consumables for fabrication, erection of earthmat, earth connection, earth electrode, earthspike (including sharpening of earth spike). As directed by the field engineer.

Labour for excavating and refilling of earth /trench for earthmat, cable, etc., of any size/depth narrow excavation as directed by the field engineer. (Normal clay / hard gravel soil)

Fabrication,supply & fixing of Earthpit detail board including the cost of 20SWGCR Sheet,10mm RTS Rod ,T &P etc.,complete.

Providing Earth bore 140/150 mm dia using power rig or 100/125 mm dia using hand bore set including the labour, lead, lift etc., sedimentary strata of clay & sand stone shale pebbles boulders etc., for earth Pits with supply and providing of Bentonite powder(Sodium Bentonite) 5Kg /Mtr depth of the bore mixed with low resistivity earths as directed by the field Engineer (Earth to be supplied by the contractor)

Supply and providing of 450-600 mm dia, 300 mm height, 36 mm thick cement collar for identification of earth electrode location as directed by the field engineer.

Provision of new water bore well.