REPAIR, MAINT AND REPLACEMENT OF LIGHTENING ARRESTORS, EARTHING INFRASTRUCTURE AND CONNECTED OTHER MISC ITEMS AT AF STN BHUJ

Amount

Labour only for cleaning the vegetation/surplus soil around the earth pits upto 1.00 mtr all around the pit, cleaning the chamber of the earth pit, replacing the rusted earthing leads/funnel / mesh with new of the same, shifting/lifting of the earthing alongwith brazing of copper strip and, re-activating the earth pit using suitable measures as required to bring the results within the limits, complete all as specified and as directed by Engineer-in-Charge. NOTE :(i) All materials required for re-activation of earthing pit will be measured and paid separately under supplied only of respective item of schedule. (ii) The resistance test of earth pits to be carried out in dry season only.

Supply only common salt for earth pit complete all as specified and as directed by Engineer-in-Charge.

Supply only magnesium sulphate for earth pit complete all as specified and as directed by Engineer-in-Charge.

Supply only Charcoal for earth pit complete all as specified and as directed by Engineer-in-Charge.

Supply & fix air termination single pointed solid copper rod 12mm dia, 300mm long mounted on GI pipe 40mm bore light grade embedded in PCC 1:2:4 type B1of size 100x100x100 mm, as required mounting for insulator, bolts and nuts complete all as specified and directed by Engineer-in-Charge. (Note :G I Pipe shall be measured and paid separately.)

Supply and fixing in replacement of GI tubing light grade for mechanical protection of earth strip laid under plinths,floors, roads, paths, culverts etc. or fixed on walls or along poles or emmbeded in PCC for giving support to air termination rod by means of MS clamps with necessary bolts, nuts and washers etc complete all as specified of size 40mm bore complete all as specified and directed by Engineer-in-Charge.

Supply & fixing in replacement of GI tubing medium grade completed with all fittings for watering to earth strip laid under trench size of 15 mm bore complete all as specified and directed by Engineer-in-Charge.

Supply & fix in replacement of test point terminal block made of gun metal / phosphorus bronze/copper of size 75x75x25mm drilled and screwed including 3 Nos 8mm dia 25mm long hexagonal head screw complete all as specified and directed by Engineer-in-Charge.

Supply & fix in replacement of copper strip 32 x 6 mm with saddles and fixing screws etc for roof/down conductor above ground including jointing with brazing etc complete all as specified and directed by Engineer-in-Charge.

Supply & fix copper strip 20 x 3.15 mm with saddles and fixing screws etc for roof/down conductor above ground including jointing with brazing etc complete all as specified and directed by Engineer-in-Charge.

Supply & fix in replacement galvanised iron strip 32 x 6 mm with saddles and fixing screws etc for roof/down conductor above ground including jointing with rivets, bolts, nuts & washers etc complete all as specified and directed by Engineer-in-Charge.

Supply & fix in replacement aluminium strip 25 x 3.15 mm with saddles and fixing screws etc for roof/down conductor above ground including joining with rivets, bolts, nuts, washers etc complete all as specified and directed by Engineer-in-Charge.

Material & labour for digging of earthing not less tha 2.25 mtr depth with 90cm length and 60cm width to getting out earthing plate and after inspection of plate/strip to be buried directly in ground vertically and filed up pit completely with removal of surplus soil as directed by Engineer-in-Charge.

Material & labour for maintenance free earthing with the help of mechnical boring machine of 150mm dia 30 mtr depth including supply and fix 160mm dia (O.D), UPVC pipe 6Kg/sqcm rating-06 mtr long with the help of suitable size clamp with nut bolt and washer-01 No, Suppy and fix 30 mtr 50mm dia perforated GI pipe medium grade lowering in borewell with the help of Tools & Plant having suitable hole for providing good condutivity of earting and Material & labour for providing 32x6 mm GI up to 7.5mtr long complete with protected with 40mm light grade GI tubing and connect with equipment by nut bolt and bore well earthing with the help of suitable size GI nut bolt and washer etc complete including charcoal dust & salt filled in borewell for earth conductivity. Material & labour for covering of borewell with PCC (1:2:4) type B-1/brick masonry pit of size 45x45x45cm complete all as specified and give the minimum earth result 1.0 Ohm to provide any chemical etc as required complete all as specified and directed by Engineer-in-Charge. Note:(i) Earth strip and GI protection pipe upto lenght 7.5mm shall deemed to be included in rate of above item.

Material & labour for maintenance free earthing with the help of mechnical boring machine of 150mm dia 20 mtr depth including supply and fix 160mm dia (O.D), UPVC pipe 6Kg/sqcm rating-06 mtr long with the help of suitable size clamp with nut bolt and washer-01 No, Suppy and fix 20 mtr 50mm dia perforated GI pipe medium grade lowering in borewell with the help of Tools & Plant having suitable hole for providing good condutivity of earting and Material & labour for providing 32x6 mm GI up to 7.5mtr long complete with protected with 40mm light grade GI tubing and connect with equipment by nut bolt and bore well earthing with the help of suitable size GI nut bolt and washer etc complete including charcoal dust & salt filled in borewell for earth conductivity. Material & labour for covering of borewell with PCC (1:2:4) type B-1/brick masonry pit of size 45x45x45cm complete all as specified and give the minimum earth result 1.0 Ohm to provide any chemical etc as required complete all as specified and directed by Engineer-in-Charge. Note:(i) Earth strip and GI protection pipe upto lenght 7.5mm shall deemed to be included in rate of above item.

Material & labour for maintenance free earthing with the help of mechnical boring machine of 150mm dia 12 mtr depth including supply and fix 160mm dia (O.D), UPVC pipe 6Kg/sqcm rating-06 mtr long with the help of suitable size clamp with nut bolt and washer-01 No, Suppy and fix 12 mtr 50mm dia perforated GI pipe medium grade lowering in borewell with the help of Tools & Plant having suitable hole for providing good condutivity of earting and Material & labour for providing 32x6 mm GI up to 7.5mtr long complete with protected with 40mm light grade GI tubing and connect with equipment by nut bolt and bore well earthing with the help of suitable size GI nut bolt and washer etc complete including charcoal dust & salt filled in borewell for earth conductivity. Material & labour for covering of borewell with PCC (1:2:4) type B-1/brick masonry pit of size 45x45x45cm complete all as specified and give the minimum earth result 1.0 Ohm to provide any chemical etc as required complete all as specified and directed by Engineer-in-Charge. Note:(i) Earth strip and GI protection pipe upto lenght 7.5mm shall deemed to be included in rate of above item.

Supply and fix 20 mm dia UPVC tubing standard duty with threaded at both ends complete all as specified and directed by Engineer-in-Charge.

Supply and fix 20 mm bore stop/tap valve, UPVC for pipe and fixed complete all as specified and directed by Engineer-in-Charge.

Cutting of existing steel tubing for alterations or addition in position without taking down and screwing for addition of Tee, etc for 20 mm bore connection complete all as specified and directed by Engineer-in-Charge. ( Note :- The cost of excavation , earthwork and fitting of pipe line required at site shall be deemed to be included in unit rate quoted by the tenderer)

Material & labourr for preparation of earth chamber made up of PCC 1:3:6 type C1 chamber, precast slab 50mm thick in cement concrete (1:2:4) type B1 (reinforced with welded steel wire fabric (XPM) of weight not less than 4kg/sqm) with frame complete all as specified and directed by Engineer-in-Charge.

SANJEEV ENTERPRISES (BID ID -3124100)

Anil Builders (BID ID -3123742)

M/s R K Enterprises (BID ID -3133041)

vinayandsons (BID ID -3131999)