PROVN OF EARTHING FACILITY FOR LDS AND LA SYSTEM IN OPS COMPLEX AND PROVN OF FALSE CEILING IN SLO OFFICE, CLOTHING STORE, RUBBER STORE AND TECH STORE AT AF STN SONEGAON ,NAGPUR

Amount

M& L Non asbestos fibre cement building boards 12 mm thick fixed or laid/ inserted to timber/GI/Alumi nium framework with screw including particle board, medium density, flat pressed, single layer type or three layer type, BWR grade complete all as specified and as directed.

S & F Hangers 6 mm dia. G.I. (upto 1200mm length) adjusting level fixed to roof slabs by means of ceiling cleats made out of G.I. flat 40 x 3 mm size 60mm long and expansion hold fasteners 12.5mm dia. 40mm long complete all as specified and as directed.

S&F rolled mild steel framed work as Joist, channel, angle, or tee sections,fixed independently, without connecting plates, etc. Fe- 410 E-250 Quality ''A'' complete all as specified and directed.

M &L for preparation new steel and iron surfaces not otherwise described over 10cm width or girth and applying two coats of synthetic enamel paints over one coat of primer of red oxide complete all as specified and as directed.

M&L chemical earthing with copper earth plate electorde 900 mm x600 mm x5 mm thick burried directly in earth pit not less than 4.7 m below normal ground level and complete size of pit 1.6 m x 1.6 m x 5 m, earth plate connected to copper earth strip of 32 mm x 6 mm by means of bolts, nuts, check nuts and washers of brass/copper duly brazed earth strip protected with 40 mm bore medium grade GI pipe from electrode and upto and including the earth test point of gun metal/phosphorus bronze of size 75x 75 x 25 mm, 15 mm bore watering pipe medium grade GI pipe including funnel, wire mesh, providing alternate layers of thickness 10 cm each of charcoal, common salt and layers of thickness 10 cm each of Magnesium Sulphate including necessary excavation, returning in, filling, removal of surplus soil to distance not exceeding 50m, PCC pit in PCC 1:2:4 type B1 using 20mm graded stone aggregate, RCC cover 40 mm reinforcement with 8 mm dia TMT bar @ 75mm centre to centre both ways, lifting handle 2 Nos of 12 mm dia MS round bar on both sides to be placed on and including MS angle iron frame 40 x 40x 5 mm complete all as directed by Engineer-in Charge.

M & L for Copper earth strip of size 32 x 6 mm dia as earth continuity conductor as main earthing lead fixed to wall on batten or recessess as chases or burried in ground or drawn in pipe fixed to pole or any other indicated situation complete all as specified & directed