short dated tender - bids are invited for supply and installation for chemical maintenance free earthing to achieve less than one ohms with grid of two earthings in any type of soil and grid of 2 plate earthing , supply and installation for earthing complete with copper plate electrode of size 60cm x 60cm x 3.15 mm thick burried directly in ground vertically at a depth not less than 3.25 metre , supply and installation for earthing complete with galvanized steel earth plate electrode of size 60cm x 60cm x 6mm thick burried directly in ground vertically , supply and fixing earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or burried in ground or drawing in conduit or any other situation , supply and installationfor galvanised iron strip 32mm x 6mm with saddles and fixing screws on porcelain insulators for roof conductors and down conductors , supply and installationfor material and labour aluminium strip 25 x 3.15 mm with saddles and fixing screws etc. for roof conductor and down conductor above ground level , supply and installationfor air termination single pointed aluminium rod 12mm dia and 300 mm long including conneting with aluminium strip , supply and installation for earthing pit indicator made of ms angle iron of 30x30x6mm of height 600mm and crca sheet for display of ep no , taking down old unserviceable gi pipe any size all as specified and directed. , supply and fixing of 20 mm bore gi pipe medium grade isi marked as per is 1239 with all new gi fittings, laid in trenches wall complete all as specified and as directed. , supply and fixing of 15 mm bore gi pipe medium grade isi marked as per is 1239 with all new gi fittings, laid in trenches wall complete all as specified and as directed. , excavation in trenches not exc 1.5 m wide and not exc 1.5 m in depth for pipe line, etc getting out in soft loose soil and levelling of bottom surface to required level , returning filling in, including spreading, levelling, watering and well ramming in layers not exceeding 25 cm complete and as directed. , removal of surplus soil to a distance not exceeding 50 mtr and depositing where directed at a level not exceeding 1.5 mtr above the starting point complete , taking down old unsv bib taps and s and f plug type bib taps, cast iron, screwed for iron pipe and fixed for 15 mm dia pipe complete all as specified and directed. , supply and installation in replacement to unsv of heavy duty saddle type porcelain type insulator for holding to gi copper strip with bronze nuts bolts and washers etc , supply and installation for refixing reallingment of gi copper strip in any size fixing on saddel type insulator using nut and bolt and washers reviting , supply and installation for in repair earthing pit of pcc pit , supply and installation for painting of pit chamber and cover with syntetic enamelled paint as per code all as specifed and directed , labour only for cutting boring to plinth protection hard standing road etc in suitable depth and for laying crossing to gi strip size 32x6 mm in 45 cm depth , supplying and laying in repair high density poly ethylene pipes hdpe pn 10 ,50 mm bore of pressure rating 6 kgf cm2 laid in trenches or fixed to walls , supply and fix in replacement test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos.