PROVN OF MAINTENANCE FREE CHEMICAL EARTH PIT AT AFNET AND IT SEC AND HARDSTANDING IN FRONT OF STN HQ AT AF STN SONEGAON, NAGPUR

Amount

Excavating over areas not exceeding 1.5 m deep and getting out in hard/dense soil complete all as specified and as directed.

Removing excavated soil exceeding 1000m and not exceeding 1500m and depositing where directed complete all as specified and directed.

M&L for Moorum/red bajri filling in floors or pavings, laid in layers n exc. 15 cm thick, spread, levelled and rammed including watering complete all as specified and as directed.

M&L for hardcore of broken stone or boulders of gauge not exceeding 63mm,deposited, spread and levelled in layer not exceeding 15cm thick, watered and rammed to true surface complete all as specified and as directed.

M&L for 100mm thick PCC 1:4:8, type D2, using 40mm graded stone aggregate as in sub base of flooring all as specified and as directed.

M&L for sand filling under floors or in paver block including watering and consolidation complete all as specified and as directed.

M&L for machine pressed precast concrete interlocking paver block any shape and size conforming to IS 15658-2006 of 60mm thickness M-35 grade with grey cement and pigments over sand cushioning laid as per manufacturer's instructions complete all as specified and directed. Note : Sand shall be measured and paid seperately.

M&L for PCC (1:2:4) type B-1 using 20mm graded stone aggregate as in kerbs or side of the path and the like including weathering, slightly rounded or chamfered angles and throating etc. complete all as specified and 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

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