Providing Independent Earth Pits for Sub-Station areas in SVU Campus, Tirupati

Providing independent earthing by exacavating a pit to a depth of 2.25Mtr in all soils as per size specified in the data for Sophisticated Electronic equipment with 600mm x 600mm x 3.15mm thick copper plate rigidly fixed to 40mm dia 'B' Class G.I Pipe of 2.5Mtr length as per National Electric Code and earth connection from electrode Copper strip of 25mm x 5mm x 200mm length to be bolted with nut bolts to G.I.pipe including 25mm x 3mm copper strip of 6Mtrs length connected from plate to Copper strip including filling with 20Kg Salt and 40Kg Charcoal or 40Kg bentonite powder and providing 18" dia 18" height 3" thick hume pipe ring covered with R.C.C. Slab including all accessories and labour charges etc complete as per IS specification 732/1982 (Part II).(Data No.23-24-25.1.3)