GEAFU-32 OF 2026-27 REPAIR AND MAINTENANCE, REPLACEMENT OF CONVENTIONAL, CHEMICAL EARTHIING AND CONNECTED WORKS AT AIR FORCE STATION UDHAMPUR

M&L dismantling the existing earthing pit chamber made of PCC 1:2:4 type B-I (using 20 mm graded crushed stone aggregate) and cleaning the area including removal of broken PCC/excavated material 50 mtr away from site for recharging of earth pits complete all as specified and as directed

Repairing to existing defective galvanised iron earthing comprising conventional copper earth plate electrode 600 x 600 x 3.15 mm by taking out carefully earth plate, watering pipe, protection pipe and re-buried the same after removing sludge from the plate and pipes. The earth plate shall be buried directly in ground with top edge of earth plate not less than 1.50 m below normal ground level, connected to GI earth wire or GI / copper earth strip any size by means of nut-bolts, check nuts and washers of galvanised iron or steel all as shown on electrical plate No. 3 of MES schedule 2009, Part–I (Specifications) and other end connected to main switch board / main DB’s / earthing test point testing of earthing on completion of job complete all as specified and directed. Note (i) Necessary eath work will be measured and paid seperately. (ii) Material like, salt charcoal, protection pipe, funnel and earth plate will be measured and paid seperately (iii) Copper/GIearth plate shall be measured and paid seperately.

All as per item No 2 hereinbefore but Repairing to existing defective copper earthing comprising conventional copper earth plate electrode 600 x 600 x 6 mm by taking out carefully earth plate

Supply only Copper Earth plate of size 60 cm x 60 cm x3.15 mm including nut, bolt, washers made of copper alloy complete all as specified and directed by Engr-in-Charge

Supply only Galvanised iron Earth plate of size 60 cm x 60 cm x 6.30 mm including nut, bolt, washers made of copper alloy complete all as specified and directed by Engr-in-Charge

Supply only salt commercial for the earth pit all as specified and directed

Supply only charcoal dust for the earth pit all as specified and directed.

M&L in repair cement concrete earth pit chamber in PCC 1:3:6, type C-1, 450 X 450 X 50 mm thick in cement concrete 1:2:4, type B-1, duly reinforced with 8 mm dia mild steel TMT bars with fair finished concrete surfaces including necessary formwork and earth work as required/ordered at site, complete all as specified and as directed.

M&L in repair Pre-cast RCC Cover with Handle 2 Nos and hole of dia 40mm in Cement Concrete 1:2:4 (20mm graded stone aggregate) of size 540x540x60mm, reinforced with and including 10mm dia TMT Bars @ 250mm Centre to Centre in both ways, complete all as specified and as directed.