REPAIRS / MAINTENANCE OF LIGHTENING CONDUCTORS AND BLDG EARTHING INCLUDING ALL RELEVANT WORKS AT ZAKHAMA MILITARY STATION UNDER AGE(I) ZAKHAMA

Amount

M & L for Lighting conductor of Air terminal , single pointed ,copper rod 12mm dia and 300 mm long including taking of old terminal of any description completed all as specified and as directed.

M & L for test point teminal block made of gun metal or phosphorus bronze size 75x75x25 mm ,drilled and screwed including 3 nos 8 mm 25 mm long hexgonal Head screw including taking out old one completed all as specified and as directed.

M & L for Copper strip 25 x 3.15mm to be fix on top of "V" type porcelain insulator or DMC insulator of suitable size and fixing screws etc. for roof conductors and down conductors above ground including taking out old strip of any description complete all as specified and as directed.

M&L for earthing complete with copper earth plate electrode 60cm x 60cm x 3.15 mm buried directly in ground vertically to a depth not less than 2.25 metre below ground level with the top edge not less than 1.5 metre below ground level connected to copper strip 20 X 3 mm as earth lead by means of bolts, nuts, check nuts and washers of steel and other end connected to earthing test point including funnel, watering pipe of 40 mm bore, light grade GI pipe, wire mesh, charcoal or coke and common salt in alternate layers all around the earth electrode compacted thickness 15 cm, earthing pit in PCC (1:3:6) type C1, 50 mm thick pre-cast RCC cover slab (1:2:4) type B1 set in CM (1:4), reinforced with 8 mm dia TMT bars @ 10 cm c/c and suitable handle of 10 mm dia MS round bars including earth work in excavation in hard and dense soil, disposal of soil not exc. 50 meter complete and testing on completion all as shown in electrical plate No-3 of MES schedule, part-I including dismantling of old earthing complete all as specified and as directed. NOTES 1). The unit rate include copper strip from top of earth plate upto 7.5 meter above ground level.

M&L for earthing complete with GI earth plate electrode of size 60cm x 60cm x 6 mm buried directly in ground vertically at a depth not less than 2.25 metre below normal ground level with top edge of earth plate at a depth not less than 1.5 metre below normal ground level sorrounded from all sides by 15cm thick and packed layer of charcoal dust and common salt filling in alternate layers etc and connected to and including 4mm dia GI wire upto 7.5 m by means of bolts, nuts, check nuts and washers made of galvanised iron and protected by light grade 15mm dia GI pipe connected to main control board and GI pipe medium grade 20mm bore for watering and including funnel, wire mesh, charcoal,salt etc RCC pit cover flush to earth pit 50mm thick reinforced with 8mm TMT bar 150mm C/C and PCC chamber pit with PCC (1:3:6) type C1 (using 20mm graded aggregate) including taking down old one and testing after completion all as specified and shown on plate No 3 of SSR Part-I 2009 complete all as specified and as directed.

M/s MATRI ENTERPRISES

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