PROVISION OF LIGHTNING PROTECTION SYSTEM IN DHQ 6 COMPLEX AT ICGS MALKAPURAM UNDER AGE I CG VIZAG

Amount

S&F Air termination, single pointed copper rod 12mm dia and 300mm long complete all as specified and as directed at site by Engineer-in-Charge.

M&L for Test point terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25 mm drilled and screwed including 3 nos. 8mm dia 25 mm long hexagonal head screw complete all as specified and as directed at site by Engineer-in-Charge.

M&L for GI pipe light grade 40 mm dia for protection of lightning conductor laid in ceiling / roof or fixed to wall complete all as specified and as directed at site by Engineer-in-Charge.

S&F Porcelain insulator of required size not exceeding 10 cm long with two nos. holes each on both end for fixing properly with nuts and bolts on wall of building for separating lightning conductor or earthing strip from building all as required at site and as directed by Engineer-in-Charge. Note- The Distance between two insulators fixed on the wall should not more than one meter length.

Earthing complete with GI earth plate electrode of size 600 mm x 600 mm x 6 mm thick buried directly to ground vertically to a depth not less than 2.25 Mtr below the ground level with top edge of earth plate not less than 1.65 Mtr below normal ground level connected to GI strip 32 x 6 mm size and earthing lead protected with 50 mm dia GI pipe light grade filling around with charcoal dust and salt including excavation, returning, filling of earth and disposal of surplus soil to a distance not exceeding 50 mtr and connected to GI strip by means of GI nuts, bolts and washers strip connected to earth plate including chamber PCC 1 : 3 : 6 type C1. using 20 mm graded stone aggregate in concrete pit pre-cast RCC 40 mm thick reinforced with 6 mm dia round at the rate of 75 mm C/C both way with 12 mm dia mild steel plain bar lifting handle 2 Nos funnel with wire mesh 20 mm dia GI pipe light grade watering pipe and frame work complete all as shown in electrical plate No. 5 of SSR Part - I 1991 including testing complete. (GI strip upto 7.5 m length in included in unit rate quoted by contractor and beyond this lengths the same shall be measured & paid separately.

S&F Aluminium strip 25 x 3 mm with saddles and fixing screws etc. for roof conductors and down conductors above ground complete all as specified and as directed at site by Engineer-in-Charge.

S&F GI strip 32 x 6 mm for extension of earth and connected to equipment or panel complete all as specified and as directed by Engineer-in-Charge.

M&L for cement concrete Type C-2 1:3:6 (40 mm graded aggregate of 150 mm thickness)in foundation filling and mass concrete complete all as specified and as directed by Engineer-in-charge.

S&F Aviation obstruction light of LED type Integral light comprising of aluminium housing with polycarbonate enclosure, 302 nos. LED are provided along with other fixing accessories complete all as specified and directed. Make: Bajaj or equivalent in Crompton / Philips / Havells.

M&L for lightning arrester assembly made out of GI Pipe light grade of size 40 mm bore alongwith welded flanged at one end & GI reducer of 40mm x 15 mm for connecting air termination & connector for each strip duly fixed with necessary nuts, bolts & washer including PCC (1:2:4) type B-0 30 x 30 x 30 cm complete all as directed by Engineer-in-Charge. Note : GI Pipe 40 mm and air termination shall be measured and paid separately under relevent items of schedule.

Mavee Syndicate

ESWAR ENTERPRISES

AYYAPPA CONSTRUCTIONS