REPAIR REPLACEMENT OF EARTHING AND LIGHTENING PROTECTION AT DIFFERENT AREA AT ARC CHARBATIA

Supply and fixing Copper strip 20 x 3.15 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as specified and directed. Note: - Old copper strip/aluminiumstrip/GI Strip shall be connected in parallel with new earthing hence no sch of credit.

Test point terminal block made of gun metal or phosphorus bronze size 75 mm x 75mm x 25 mm drilled and screwed including 3 Nos 8 mm dia 25 mm long hex head screen complete all as specified and directed.

M&L for Polymer insulators for fixing of earthing strip complete all as specified and directed.

Supply and fixing pointed Air termination, five pointed , copper rod 12 mm dia and 600 mm long fixing with two nos nuts and washers complete all as specified and directed

M&L earthing complete with copper earth plate electrode of size 600 x 600 x 3.15 mm thick buried directly in ground in vertical position (earth pit not less than 2.25 m deep below the normal ground level) with top edge of the earth plate not less than 1.5 m below normal ground level, connected to copper strip 20X3 mm by means of copper bolts, nuts, check nuts and washers/brazing welding of with 40mm GI pipe, all as shown in electrical plate No. 3 connected to earthing test point and including dismantling old earth pit complete all as specified and directed. Note:- The unit rate shall also include for earth work in any type of soil, PCC 1:3:6 type C1 chamber, RCC 1:1.5:3, type A1 cover slab, 50 mm thick reinforced with 8 mm dia TMT bar @ 140 mm C/C both ways, 10 mm dia plain bar lifting handle embedded in cover slab, 20 mm bore medium grade GI watering pipe, 15 mm bore GI light grade earth lead protection pipe, funnel, wire mesh, copper lugs, charcoal and common salt in alternate layer etc.