Military Engineer Services Tender

Earthing complete all shown as electrical plate No -05 of MES Sch part -I as specified and as directed including the following. (i) Copper earth plate of size 600 x 600 x 3.0 mm thick burried directly in ground vertically to a depth not less than 2.25 mtr below ground level with top edge of earth plate at a depth not less than 1.50 metre below ground level. (ii) Earth plate surrounded by and packed with charcoal and common salt in alternative layers ( n.exc 15 cms each layer). (iii) 20x3mm Copper strip from earth plate to test point including necessary GI bolts, nuts check , waShers, thimbles etc. (iv) 20mm bore, medium grade, GI pipe for watering including GI funnel and wire mesh. Pipe shall be provided vertically upto top level of earth pit and then taken horizontaly to the earth pit. (v) 40 mm dia bore G. I. light grade pipe for protection of copper strip. (vi) Cement concrete chamber of PCC (1:3:6) type C-2 using 40mm graded crushed stone aggregate. The chamber shall be constructed one metre away from edge of earth pit. (vii) 50mm thick precast cover of cement concrete(1:2:4) type B-1 using 20mm graded crushed stone aggregate and MS angle iron 50x50x6mm frame including two coats of synthetic enamel painting over a coat of red oxide to exposed steel surfaces with suitable handle to lift the cover. (viii) Excavation in soft/loose soil, returning filling & removal of surplus soil to a distance of 50m as directed.Note :- Copper strip 20x3mm beyond 7.5 mtr shall be measured and paid separately under relevant items of Sch 'A'

Material and labour for air-termination, vertical type, single pointed rod made of 12 mm dia 300 mm long aluminium rod including necessary fixing arrangement with bolt, nuts and washers etc complete all as specified and directed by Engr-in-Charge.

Dismantling and taking down dislocated / de-shaped/loose earth contunity conductor down or roof conductor in any position for re-fixing properly or for replacement complete including UNSV insulators/clamps/ saddles ets for Copper/GI/ Aluminum strip of any size. all as directed by Engr-in-Charge.