REPAIR/MAINT OF EARTHING, LIGHTNING PROTN SYSTEM, PAINTING OF ELECTRICAL POLES, TRIMMING OF TREES/ BUSHES, STONE AGGREGATE IN SUB STNS AND CONNECTED SERVIVICES IN ALL POWER HOUSE ST AT BASISTHA AND OTHER THAN BASISTHA AREA UNDER GE GUWAHATI

Disconnecting/ Taking down old unserviceable Earthing pit of any type with accessories including removing demolished material out side MD land complete all as specified and as directed.

M&L for earthing complete with GI earth plate 600mm x 600mm x 6.3 mm thick electrode buried directly in ground (earth pit not less then 2.25 metres deep below ground level ) with top edge of the plate not less then 1.5 metres below normal ground level connected to GI earth strip 25 x 4 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 of MES schedule Part-I and incl 40 mm bore light grade GI protection pipe (upto 7.5 metres beyond outer edge of earth pit) PCC M-10 grade (Nominal Mix) using 40mm graded stone aggregate in pit with 40mm thick RCC cover in reinforced cement concrete M-15 grade (Nominal Mix) using 20mm graded stone aggregate, reinforced with 8mm dia bar both way @ 150mm c/c, watering arrangement with funnel and wire mesh and 20 mm bore light grade GI watering pipe, common salt and chaarcoal filling, necessary excavation and earth work complete all as specified and as directed. Note : Rate of item is deemed to be included for excavation in hard rock, by compressor machine to achieve required depth.

M&L for earthing complete with GI earth plate 600mm x 600mm x 6.3 mm thick electrode buried directly in ground (earth pit not less then 2.25 metres deep below ground level ) with top edge of the plate not less then 1.5 metres below normal ground level connected to GI earth strip 32 x 6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 of MES schedule Part-I and incl 40 mm bore light grade GI protection pipe (upto 7.5 metres beyond outer edge of earth pit) PCC M-1+B500 grade (Nominal Mix) using 40mm graded stone aggregate in pit with 40mm thick RCC cover in reinforced cement concrete M-15 grade (Nominal Mix) using 20mm graded stone aggregate, reinforced with 8mm dia bar both way @ 150mm c/c, watering arrangement with funnel and wire mesh and 20 mm bore light grade GI watering pipe, common salt and chaarcoal filling, necessary excavation and earth work complete all as specified and as directed. Note : Rate of item is deemed to be included for excavation in hard rock, by compressor machine to achieve required depth.

M&L for earthing complete with copper earth plate 900mm x 900mm x 5 mm thick electrode buried directly in ground (earth pit not less then 2.25 metres deep below ground level ) with top edge of the plate not less then 1.5 metres below normal ground level connected to GI earth strip 50 x 6 mm by means of bolts, nuts, check nuts and washers of galvanised iron or steel all as shown in electrical plate No. 3 of MES schedule Part-I and incl 80 mm bore light grade GI protection pipe (upto 7.5 metres beyond outer edge of earth pit) PCC M-1+B500 grade (Nominal Mix) using 40mm graded stone aggregate in pit with 40mm thick RCC cover in reinforced cement concrete M-15 grade (Nominal Mix) using 20mm graded stone aggregate, reinforced with 8mm dia bar both way @ 150mm c/c, watering arrangement with funnel and wire mesh and 20 mm bore light grade GI watering pipe, common salt and chaarcoal filling, necessary excavation and earth work complete all as specified and as directed. Note : Rate of item is deemed to be included for excavation in hard rock, by compressor machine to achieve required depth.

M&L for earthing complete with copper earth plate electrode 600mm x 600mm x 3 mm thick electrode buried directly in ground (earth pit not less then 2.25 metres deep below ground level ) with top edge of the plate not less then 1.5 metres below normal ground level connected to copper earth strip 20 x 3mm by means of briazzing made out of copper steel all as shown in electrical plate No. 3 of MES schedule Part-I and incl 40 mm bore light grade GI protection pipe (upto 7.5 metres beyond outer edge of earth pit) PCC M-10 grade (Nominal Mix) using 40mm graded stone aggregate in pit with 40mm thick RCC cover in reinforced cement concrete M-15 grade (Nominal Mix) using 20mm graded stone aggregate, reinforced with 8mm dia bar both way @ 150mm c/c, watering arrangement with funnel and wire mesh and 20 mm bore light grade GI watering pipe, common salt and chaarcoal filling, necessary excavation and earth work complete all as specified and as directed. Note : Rate of item is deemed to be included for excavation in hard rock, by compressor machine to achieve required depth.

Taking down of unserviceable copper earthing strip any size complete all as specified and as directed.

S&F copper strip of size 20mmx3mm thick for earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc , complete all as specified and as directed. Note: Copper strip shall be 99.99% copper.

All as per item No 7.00 here in above but fixing only complete all as directed. Note : Old serviceable copper earthing strip retrieved from serial item No. 6.00 here-in-before shall be used under this item.

Taking down of unserviceable Aluminium earthing strip and any size complete all as specified and as directed.

S&F GI steel strip of size 32mmx6mm thick for earth continuity conductor or main earthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc as in repair complete all as specified and as directed