MAINT / REPAIR / REPLACEMENT OF EXISTING EARTHING AND MISC E/M MAINT WORKS AT AFS SURYALANKA

Amount

S&F in repair earth continuity conductor or main earth lead fixed to wall or buried in ground or drawn in conduit pipe or any other indicated situation as required of GI wire of size 4mm dia with necessary saddles complete all as specified and as directed.

M&L in replacement of Earthing complete with GI Earth Plate electrode 600x600x6mm buried directly in ground earth pit not less than 2.25 mtr below ground level with top edge of the plate not less than 1.5 mtr below ground level, surrounded from all sides with mixture of charcoal and common salt and electrode connected with GI earth lead GI earth strip of rsize 32x6 mm by means of nuts/bolts/ check nuts/ wahers , GI pipe light grade of 40 mm bore as protection pipe, GI Strip of length not more than 7.5 mtr and connected to test point. GI pipe 20mm dia medium grade for watering, funnel with wire mesh, PCC pit and RCC (1:2:4) type B-1 for cover with 8 mm dia bar reinforcement both ways @ 140 c/c including excavation and earth work disposal of surplus soil to a distance not exceeding 50 mtr as shown on electrical plate No 3 of SSR-2009 complete all as specified and as directed.

All as per item No 2 but using copper plate 600×600×3.15mm thick electrode and 20×3mm copper strip as earthing lead

S&F in repair earth continuity conductor fixed to wall or batten or recess or cheses or buried in ground or drawn in conduit pipe or fixed to poles or any other indicated situation as required of size 25 x 3 mm aluminium strip on necessary insulators for every 1 mtr complete all as specified and as directed.

All as per item No 05 but copper strip of size 20 x 3 mm with necessary suitable sleeve. Note: Copper strip to be connected by copper braising, rate is deemed to be include braising work

M&L in repair for porcelain/ Bakelite insulator for supporting the aluminum/copper strip of any size, fixed to wall/ floor with two screws and fixing cooper / aluminum strip with one washer and nuts complete all as specified and as directed.

M&L for Removing of old rusted nuts, bolts, washers, replacing with new GI nuts, bolts, 2 Nos washers for GI/Aluminium strip of size not more than 32 x 6 mm complete all as specified and as directed.

Excavation of pit upto 1 mt depth & pouring salt 25 Kg, Charcoal 25 Kg & magnisium sulphate 25 Kg including retruning filling as directed.

Supplying, laying, jointing and testing galvanized iron steel water tubing 15 mm bore, medium grade, laid in trenches, including all fittings and fixtures complete all as specified and as directed.

S&F 32 mm medium grade PVC pipe ISI marked, to be buried the earthing strip into the ground for poper insulation of building and equipment.

Excavation of earth pit upto one feet depth and one feet radious around the earth electrode and supply and pour the Earthing Gel (Earth recharger), an earth resistance lowering Gel, 6 kg in bucket after mixing the gel with 10 ltrs of water, pouring the gel slowly with in a period of 2 hours and all as per instructions issued by manufacturer including recording the earth resistance of the earth pit before and 4 hours after pouring the Gel complete all as specified and directed. (Note :- (i) Rates are inclusive of testing charges.

Removing lightening conductor, aluminium strip /copper strip of any size connected to lightening conductor including saddles, porcelline insulators, screws and allied items installed on roof and and re-fixing the same after completion of roof treatment and replacement of any unserviceable nuts/ screws / insulators complete all as specified and as directed.

Supply and fix Havells IHCNFO0063 Onload Changeover Switch 4 Pole 63 Amp 415 Volt

S&F of L&T MCX 32 Contactor 160 A 4 Pole + (2 NO + 2NC)-CS97020, 4 Pole contactor

DHANA CONSTRUCTIONS (BID ID -3202347)

BEST ENGINEERING (BID ID -3201767)