Proper Earthing arrangements of Different feeders 11 KV and 3.3 KV O/H line feeding Power to Religara Colliery under Argada Area.

Amount

Supplying and Laying 25mm x 5mm G.I. Strip at 0.50 Metre below ground as strip earth electrode, including connection/ temination with G.I. nut, bolt, spring, washeretc. As required (Jointing shall be done by overlapping and with 2 sets of G.I. nut bolt & spring washer spaced at 50mm)

Supply and erection of approved make safe earthing electrode consisting pipe-in-pipe technology as perIS 3043-1987 made of corrosion free G.I. Pipes with constatnt ohmic value surrounded by highly conductive compound with high charge dissipation suitable for effective and maintenace free earthing in earth pit of minimum bore dia: 150mm size as mentioned below: With 2 meter pipe of 80 mm outer dia, 400mm inner dia and 14mm terminal dia. In Soft/Hard Roc/Marshy soil with 25 kg (One Bag) back filling bentonite compound UL Listed and confirm to relevant International/Indian standards around electrode upto ground level.

Providing and fixing G.I. tape 20 mm X 3 mm thick on parapet or surface of wall for lightning conductor complete as required

Providing and laying in position cement concrete of specified grade, excluding the cost of centering, shuttering. All work up to plinth level : 1:4:8 (1 cement : 4 coarse sand : 8 graded stone aggregate 20 mm nominal size) 0.24mtr x 1 mtr x 1Mtr x 42 Nos. = 10.8 CUM

Earth work in excavation by mechanical means (Hydraulic excavator) / manual means over areas ( exceeding 30 Cm in depth, 1.5meter in width as well as 10 sqm on plan), including disposal of excavated earth, lead upto 1.5 meter, disposed earth to be levelled and neatly dressed. 2.8.1 Ordinary Rock. 1Mtr x 1Mtr x 0.5 Mtr x 42 Nos. = 21 CUM

Cement plaster skirting up to 30 cm height, with cement mortar 1:3 (1 cement : 3 coarse sand), finished with a floating coat of neat cement. 18 mm thick

Brick work with common burnt clay modular bricks of class designation 7.5 in foundation and plinth in Cement mortar 1:4 (1 cement : 4 coarse sand) 0.12 mtr x 1mtr x 1mtr x 2 side x 42 Nos. = 10.08 CUM 0.12 mtr x 0.76mtr x 1mtr x 2 side x 42 Nos. = 7.66 CUM

D' Iron Clamp

Supply of G.I. Wire (A: 11KV O/H Line Cradling, 54 SPN x 50 Mtr x 131 Kg/PKMTR x 1.05 = 371.38 Kg. B: 11KV O/H Line Cradling 57 SPN x 50 Mtr x 131 Kg/PKMTR x 1.05 = 392.01 Kg)

Erection of G.I. Wire No. 8SWG including bnding etc. as required

Total impact of GST for the purpose of CTC

Sandeep and Co.

Maa Enterprises