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| 1 | M&L for earthing complete with galvanised steel earth plate electrode 600x600x6mm thick burried directly in ground earth pit not less than 2.25m deep below ground level with top edge of the plate not less than 1.5m deep below normal ground levelconnected to and including 25X4mm thick galvanised iron stripas earthing lead by means ofbolts, nuts, checknuts and washers of galvanised iron or steel all as specified in electrical plate No 3 of SSR (2009) part-I including 50mm bore GI pipe (light grade) for protection of earth strip and PCC (1:3:6) type C-1 as in pit, Precast RCC earth pit cover 8 cm thick reinforced with 8mm dia TMT bars @150mmc/c and two handles made out of 8mm dia round mild steel bar, excavation and earth work in any type of soil and alternate layers of charcoal, common salt and 20mm bore galvanised medium grade steel tubing for watering with one end fixed with cast iron funnel and wire mesh and testing on completion after dismantling of old unserviceable earthing with all material etc all as specified and directed.(Note:- (i) Earth strip and protection pipe upto board 7.5 m and others mentioned above are included in this item (ii) The earthing pit shall be provide with proper earth pit and pit cover (iii) pit cover shall be painted with two coats of cement base paint of approved colour and pit number to be marked on a GI plate above 45 cm from GL as per colour code followed by AF authority (iv) Purchase voucher of GI plate and strip having GST number shall be provided before the payment claim (v) Earthing test certificate from users shall be provided before the payment claim) |
| 2 | M&L for earthing complete with galvanised steel earth plate electrode 600x600x6mm thick burried directly in ground earth pit not less than 2.25m deep below ground level with top edge of the plate not less than 1.5m deep below normal ground levelconnected to and including 32/6mm thick galvanised iron strip as earthing lead by means ofbolts, nuts, checknuts and washers of galvanised iron or steel all as specified in electrical plate No 3 of SSR (2009) part-I including 50mm bore GI pipe (light grade) for protection of earth strip and PCC (1:3:6) type C-1 as in pit, Precast RCC earth pit cover 8 cm thick reinforced with 8mm dia TMT bars @150mmc/c and two handles made out of 8mm dia round mild steel bar, excavation and earth work in any type of soil and alternate layers of charcoal, common salt and 20mm bore galvanised medium grade steel tubing for watering with one end fixed with cast iron funnel and wire mesh and testing on completion after dismantling of old unserviceable earthing with all material etc all as specified and directed.(Note:- (i) Earth strip and protection pipe upto board 7.5 m and others mentioned in above are included in this item (ii) The earthing pit shall be provide with proper earth pit and pit cover (iii) pit cover shall be painted with two coats of cement base paint of approved colour and pit number to be marked on a GI plate above 45 cm from GL as per colour code followed by AF authority (iv) Purchase voucher of GI plate and strip having GST number shall be provided before the payment claim (v) Earthing test certificate from users shall be provided before the payment claim) |
| 3 | M&L for earthing complete with copper earth plate electrode 600x600x3.15 mm thick burried directly in ground earth pit not less than 2.25m deep below ground level with top edge of the plate not less than 1.5m deep below normal ground levelconnected to and including 20x3mm thick copper strip as earthing lead by means ofbolts, nuts, check nuts and washers of galvanised iron or steel all as specified in electrical plate No 3 of SSR (2009) part-I including 50mm bore GI pipe (light grade) for protection of earth strip and PCC (1:3:6) type C-1 as in pit, Precast RCC earth pit cover 8 cm thick reinforced with 8mm dia TMT bars @150mmc/c and two handles made out of 8mm dia round mild steel bar, excavation and earth work in any type of soil and alternate layers of charcoal, common salt and 20mm bore galvanised medium grade steel tubing for watering with one end fixed with cast iron funnel and wire mesh and testing on completion after dismantling of old unserviceable earthing with all material etc all as specified and directed.(Note:- (i) Earth strip and protection pipe upto board 7.5 m and others mentoned above are included in this item (ii) The earthing pit shall be provide with proper earth pit and pit cover (iii) pit cover shall be painted with two coats of cement base paint of approved colour and pit number to be marked on a GI plate above 45 cm from GL as per colour code followed by AF authority (iv) Purchase voucher of GI plate and strip having GST number shall be provided before the payment claim (v) Earthing test certificate from users shall be provided before the payment claim) |
| 4 | S&F for Copper strip 20x3 mm buried in ground and on wall surface with shaddles and fixing screws etc for roof conductors and down conductors above/below of any type of wall surface with necessary fixing arrangements by providing proceling base at 60cm interval and using catmium plated fixing screw and insulator per RM as per site requirement (for additional earthing lead beyond 7.5 meters per earth, if so required at site or other location) and also required interconnection of earth pits after dismantling of old unserviceable copper strip complete all as specified and directed.(Note: (i) Strip shall be installed on saddles in such way that in no case copper strip comes in direct contact with pole/wall/Roof etc. (ii) Copper strip will be fixed epoxy base insulators of suitable size (iii) The rates quoted by the contractor included the all items mentioned above.) |
| 5 | S&F for Copper strip 32x6 mm buried in ground and on wall surface with shaddles and fixing screws etc for roof conductors and down conductors above/below of any type of wall surface with necessary fixing arrangements by providing proceling base at 60cm interval and using catmium plated fixing screw and insulator per RM as per site requirement and also required interconnection of earth pits after dismantling of old unserviceable copper strip complete all as specified and directed.(Note: (i) Strip shall be installed on saddles in such way that in no case copper strip comes in direct contact with pole/wall/Roof etc. (ii) Copper strip will be fixed epoxy base insulators of suitable size (iii) The rates quoted by the contractor included the all items mentioned above.) |
| 6 | S&F for Galvanised iron strip 25x4 mm buried in ground and on wall surface with shaddles and fixing screws etc for roof conductors and down conductors above/below of any type of wall surface with necessary fixing arrangements by providing proceling base at 60cm interval and using catmium plated fixing screw and insulator per RM as per site requirement (for additional earthing lead beyond 7.5 meters per earth, if so required at site or other location) and also required interconnection of earth pits after dismantling of old unserviceable galvanised iron strip complete all as specified and directed.(Note: (i) Strip shall be installed on saddles in such way that in no case Galvanised iron strip comes in direct contact with pole/wall/Roof etc. (ii) Galvanised ironstrip will be fixed epoxy base insulators of suitable size (iii) The rates quoted by the contractor included the all items mentioned above.) |
| 7 | S&F for Galvanised iron strip 32x6 mm buried in ground and on wall surface with shaddles and fixing screws etc for roof conductors and down conductors above/below of any type of wall surface with necessary fixing arrangements by providing proceling base at 60cm interval and using catmium plated fixing screw and insulator per RM as per site requirement (for additional earthing lead beyond 7.5 meters per earth, if so required at site or other location) and also required interconnection of earth pits after dismantling of old unserviceable galvanised iron strip complete all as specified and directed.(Note: (i) Strip shall be installed on saddles in such way that in no case Galvanised iron strip comes in direct contact with pole/wall/Roof etc. (ii) Galvanised ironstrip will be fixed epoxy base insulators of suitable size (iii) The rates quoted by the contractor included the all items mentioned above.) |
| 8 | M&L for 40mm dia galvanized steel tubing (light grade) with complete all fittings such as elbow, unions, nipples, tees, bends, short pieces, connections, check-nuts, caps, plugs, diminishing pieces and flanges etc as in pole, crossing of roads, laid in trenches, fixed on walls for cable protection etc. complete after taking down old unserviceable GI tubing of 40mm dia with fittings in trenches/floor/fixed to pole for earth protection all as specified and directed. |
| 9 | S&F for test point terminal block made of gun metal or phosphorus bronze size 75 mm x75 mm x 25mm drilled and screwed including 3 nos. 8mm dia 25mm long hexagonal. head screw including 2 mm thick MS box of suitable size for protection of test box terminal duly locking arrangement including connection to condutor and earth strip /wire after taking down of old unserviceable test point terminal box of any type and size complete all as specified and directed by Engineer-In-Charge. |
| 10 | S&F for 20 mm bore galvanised iron GI tubing (medium grade) with all fittings such as bends, socket, Tee, Elbow, union, Nipple, short pieces and fixed to walls, ceilings or laid in floors after taking down old unserviceable GI pipe of 20mm dia with all fittings etc complete all as specified and directed. |
| 11 | M&L for 15mm diaself closing tap cast iron or mallable cast iron galvanised, screwed to iron pipe complete as in repair all as specified and directed. |
| 12 | Excavation in trenches notexceeding 1.5mwide and depth not exceeding 1.5m depth for taking out / laying of under ground cable and foundation of poles/stays etc. and getting out in soft / loose soil complete all as specified and directed. |
| 13 | Returning, filling in, trenches etc. including spreading, leveling, watering and well ramming in layers not exceeding 25 cm thick complete all as specified and as directed. |
| 14 | Removing of excavated surplus excavated soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified and directed. |
| 15 | Routine monthly check up of all earthing at AF station Panagarh (approx 400) including technical area and maintaining monthly record and submitting the same before forthnight of each month duly signed by user,Engineer-In-Charge, JE and Contractor as per \"Appx A\" named Earth Pit Resistance Testing Record Sheet as mentioned in Particular Specification Page No 90.(Note: Payment shall be made after submission of testing record sheet as per Appx-A) |
| 16 | Repair/replacement of existing old earthing pits and lightening conductors of GI/Copper strips where found corroded and testing of earth resistence value and pouring of salt/charcol/Magnesium sulphate for obtaining earth value below 5 ohm complete all as specified and as directed.(Note: (i) Salt/Charcol/ Magnesium sulphate /strip to be measured and paid separately (ii) Cost of labour shall be included in this item (iii) Cost of repair/ replacement shall not be exceed the cost of new earthing.) |
| 17 | Supply only Salt for earthing against Item No 16 |
| 18 | Supply only Charcol for earthing against Item No 16 |
| 19 | Supply only Magnesium sulphate for earthing against Item No 16 |
| 20 | S&F for 300mm longair termination, single pointed, copper rod of 12mm dia on the highest point of buildings or as required at site on porcelain base support complete after taking down old unserviceable copper air termination rodall as specified and directed |
