Misc repair and maint of Earthing and lightning conductor of MES bldgs at Hunder and Khalsar under GE Partapur

Amount

Earthing complete with galvanized steel earth plate electrode 60 cm x 60 cm x 6 mm thick buried directly in ground (earth pit not less than 1 x 1 x 2.25 mtrs deep below ground level) with top edge of plate not less than 1.5 mtr below normal ground level connected to a GI strip 25 x 4 mm by means of bolts, nuts ,check nuts and washers connected to test point or as directed including filling of 100 Kgs charcoal and 100 Kgs salt in alternate layers of 150 mm each making PCC Chamber by PCC 1:3:6 type C-1 and cover of 50 mm thick duly reinforced by 6 mm bar in PCC of 1:3:6 and providing 20 mm dia light grade with funnel and wire mesh necessary 40 mm bore GI tube light grade for protection of GI earth strip 32 x 6 mm up to test point etc complete all as shown in electrical plate No 5 of MES SSR Part-I all as specified and directed . Note : GI Strip and protection pipe upto 7.5 mtr deemed included in the rate quoted.

Supply and fix single pointed air termination aluminium rod 12mm dia 300mm long all as directed by Engr-In-Charge.

Supply and fix aluminium strip 25mmx3.15mm with PVC saddles and fixing screws etc. for roof conductors complete with saddle and fixing screws and down conductors above ground.

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 specified.

Earthing complete with galvanized steel earth plate electrode 60 cm x 60 cm x 6.3 mm thick buried directly in ground (earth pit not less than 2.25 metres deep below normal ground level) with top edge of plate not less than 1.5 metres below normal ground level, connecting to the Galvanised earth lead wire 4.0 mm dia by means of bolts, nuts , check nuts and washers of galvanized iron and steel earth wire protected by provision of GI light grade pipe 40 mm bore including provision of concrete pit made from PCC ( 1:2:4) type B-1 (using 20 mm graded stone aggregate) with 40mm thick cover of RCC 1:2:4 reinforced with XPM (Weight not less than 4 Kg/Sqm) and frame of angle iron 40 x 40 x 6 mm and handle of 6 mm dia MS bar made to shape, GI light grade 20 mm bore pipe for watering perforated at bottom, 1.50 metre long placed on top edge of earth plate, common salt & charcoal filling, with fixing arrangement , funnel, wire mesh and earth work in hard/dense soil , returning filling in and removal of surplus soil to a distance not exceeding 50 metres, all as per electrical plate No 5 of SSR 2009 Part-I and connecting to Poles all as specified or indicated including testing on complete all as specified and as directed by Engineer-in-Charge.

Deduct Schedule of Credit of Rs (-) 10,801.00 (Minus) as listed in Schedule 'A' Part-II. Contract Sum shall be arrived after deducting the credit amount. Note :- Tenderers will not quote against this item being a firm amount.

M/S NINDI BUILDERS

M/S GHULAM MOHAMMAD CHATAPA

EESSI