CONSTRUCTION OF CHEMICAL EARTHING, LIGHTENING ARRESTER AND ALLIED WORKS AT ALG PASIGHAT AND AF STATION UNDER GE (AF) CHABUA

Amount

M&L for maintenance free chemical earthing system complete with 03 (three) nos copper bonded rods, 17.2 mm dia 3000 mm long electrode buried at suitable distance apart directly in ground, to bore holes of 120 mm dia vertically to a depth not less than 3.60 mtr deep below ground level with top edge of earth electrode at a depth not less than 100 mm below normal ground level, provision of clamps or brazed or both for each copper bonded rods made of copper and copper strip of size 25 x 3 mm & strip connection on the top of the electrode and copper strip of size 25 x 3 mm for inter connection of 03 nos copper bonded rods and laying at least 500 mm below in the ground and further connected to test point terminal block, including back filling of bore holes with advanced earth enhancing compound 96 kilogram (minimum) for artificial treatment to soil so as to achieve earth resistance below 01 Ohms as specified in para 19.140 of SSR Part-1 (2009), including provision of earthing pit in PCC(1:3:6) type C1 pre-cast cover RCC slab of size 400 x 400 x 50 mm with one handle made out of 8 mm dia round bar, including necessary earth work and three coats of white wash on plastered surface (exposed surfaces) and testing complete all as directed and including necessary earth work and testing complete all as specified and directed.

S&F Test point terminal block made of copper size 300mmx32mmx6mm, drilled and screwed including 4 Nos 8mm dia 25mm long hexagonal head brass screws including box of size 90x90x90mm made of 1.6mm plain sheet painted with two coats of synthetic enamel paint over a coat of red oxide primer and screwed to wall for protection of test point complete all as specified.

S&F GI tube light grade 50mm dia with all fitting and laid in floors, under road, pavement or hard standing for protection of earthing strip complete all as specified and directed.

All as per item No. 3 here in before but 40 mm bore complete all as specified and directed.

Supply and fixing copper strip of size 25x3mm with saddles with required porcelain insulator, fixing screws etc. for roof conductors and down conductors complete all as specified and directed.

Supply and fixing copper strip of size 32x6mm with saddles with required porcelain insulator, fixing screws etc. for roof conductors and down conductors complete all as specified and directed.

M&L for GI mast 6mtr long 50mm dia fixed in PCC 1:2:4 type B-1 (using 20mm graded stone aggregate) base with suitable depth as per site requirement complete all as specified and directed.

M&L for lighting strike recorder as per manufacture's instructions complete all as specified and directed.

M&L for single PVC insulated core copper cable of size 70 Sqmm with lugs complete all as specified and directed.

STANDARD ELECTRIC WINDERS

M/s PRABIR ENTERPRISE

NChetia and Sons Trading

M/s HALDER ENTERPRISE

M/S R G Construction

M/s Singh enterprises

ms singh construction