SPECIAL REPAIR/ REPLACEMENT OF OLD CONVENTIONAL EARTHING PITS FOR VARIOUS EQUIPMENTS AND CONNECTED ITEMS AT AF STATION AGRA UNDER GE (AF) TECH AREA AGRA

Amount

S&F in repair Copper strip of size 20 x 3 mm earth continuity conductor or main earthing lead fixed to wall on DMC type insulator or recess or chases or buried in ground or drawn in conduit/pipe etc complete all as specified and directed.

S&F in repair Copper strip of size 32 x 6 mm earth continuity conductor or main earthing lead fixed to wall on DMC type insulator or recess or chases or buried in ground or drawn in conduit/pipe etc complete all as specified and directed.

Dismentling / taking out old unserviceable earthing pit any type / size including excavation work in any type of soil / demolishing the pits etc and retrieved the scrap complete all as apecified and directed.

M&L for brazing/welding of earthing electrode/strip of any type and size complete all as specified and directed.

M&L in repair 50 mm dia GI tubing light grade with all fittings such as tee, bend, elbow,reducer, socket etc for earthing lead protection laid in under ground /fixed on wall complete all as specified and directed.

M&L in repair 40 mm dia GI tubing light grade with all fittings such as tee, bend,elbow,reducer, socket etc for earthing lead protection laid in under ground /fixed on wall complete all as specified and directed.

M&L in repair 80 mm dia GI tubing light grade with all fittings such as tee, bend,elbow,reducer, socket etc for earthing lead protection laid in under ground /fixed on wall complete all as specified and directed.

M&L for Cutting chases, pinning in making good to facings where required and pointing in cemant mortar 1:3 to ends or edges of landings, steps, cills, sunsheds, shelves, lintels, etc; and cutting chases for concealed conduit wiring,etc, and making good in brick wall in cm 1:4 /RCC in M 15 using 20mm graded stone aggregate, cutting not exc 10 cm girth complete all as specified and directed.

M&L for chemical earthing complete with Copper plate electrode of size 900mmx600mmx5 mm thick buried directly in earth pit not less than 4.7 meter below normal ground level and complete size of pit 1.6 meter x 0.61 meter x 5.10 meter earth plate connected to copper strip 32x6mm by means of copper/ brass nut, bolts earth strip protected with 40 mm bore light grade GI pipe from electrode and upto and including the earth test point of gun metal , 20mm bore watering pipe, medium grade GI pipe including funnel wiremess providing alternate layer of 10 cm each charcoal salt and magnesium sulphate layer upto 1.2 meter and 2 Kg coper sulphate to be added around including excavation, returning in filling, removal of surplus soil to a distance not exceeding 50m, PCC pit in PCC 1:2:4 type B1 (using 20mm graded stone aggregate), as in earth pit with 40 x 40 x 6 mm MS Angle iron frame and pit cover of made by dholpur stone 40x40cm size and 40mm thick with well dressed and having of handle of made by 12mm MS Rod for lifting of pit cover,15mm thick plastering with CM (1:6) internally and upto 150mm below ground level externally, PGI funnel with 20mm dia medium grade GI pipe for watering and wire mesh complete all as specified and shown on electrical plate No 3 of SSR Part-I (2009) and connected to earth test incl testing complete all as specified and directed.

M&L for earthing complete with Copper plate electrode of size 600mmx600mmx 3.15 mm thick buried directly in ground (earth pit not less than 3.00 meter deep below ground level with top edge of the plate not less than 2.25 meter below ground level connected to copper strip of size 32x6 mm as earthing electrode by means of MS bolts, nuts, check nuts and washers of galvanised iron or steel connected to earthing test point all as specified incl excavation and earth work work in any type of soil and disposal of surplus soil to a distance nexc 50m incl 40 mm dia GI tubing light grade for protection and necessary fitting for protection of copper strip incl filling of charcoal, dust and common salt in layers at both sides of earth plate not less than 40cm each side with alternate layers of 15cm each layer Earth pit shall be in PCC (1:3:6) type C-1 (using 20mm graded stone aggregate) with 40 x 40 x 6 mm MS Angle iron frame of pit cover of made by dholpur stone of size 40x40cm size and 40mm thick with well dressed and having handle made by 12mm MS Rod for lifting of pit cover, 15mm thick plastering with CM (1:6) internally and upto 150mm below ground level externally, PGI funnel with 20mm dia medium grade GI pipe for watering and GI wire mesh complete all as specified and shown on electrical plate No 3 of SSR Part-I (2009) and connected to earth test incl testing complete all as specified and directed. Note for item No. 09 and 10 (i) Copper strip/ GI Strip and protection light grade GI pipe upto 7.5 meter shall be deemed to be included in the quoted rates. (ii) The earthing value of each earthing pit to be below 1 Ω (Ohm). (iii) Excavation and all earth work shall be deemed to be included in the unit rates as quoted by the contractor. (iv) The quantity shall be filled in earth pit is 250 Kg Charcoal, 200 Kg crystal salt and 100 Kg of magnesium sulphate (MgSo4) shall be filled in earth pit and initial filling of water willbe added before filling the soil.

M&L for MS sheet of size 30 x 20cm & thickness of 2mm shall be used for fabrication of cable route indicator fabricated in the shape of square/round/triangle as per sample, including Angle Iron 25x25x3mm (90 cm long), framed work with shape of 'T' etc, necessary welding, earth works in any type of soil, etc including two coats of synthetic enamel paint over a coat of red oxide primer and writing of letters TESTED ON -------, RESULT -------------with inclusive different colour of synthetic enamel paint with suitable size of letters and all arrangements including grouting with PCC (1:3:6) type C-1 (Using 20 mm graded stone aggregates) of size 150x150x150mm complete all as specified and directed .

M&L cutting of existing steel tubing of any size upto 50mm bore for insertion of new 'T' of required size complete all as specified and directed.

S&F in repair Gun-metal, globe or gate valves,15 mm with iron wheel head, screwed both ends for iron pipe high pressure and fixed all as specified and directed.

S&F in repair Gun-metal, globe or gate valves,20 mm with iron wheel head, screwed both ends for iron pipe high pressure and fixed all as specified and directed.

S&F in repair including testing and commissioning GI tubing medium grade size 15 mm in fixed to wall/ceiling including required GI fitting complete all as specified and directed

S&F in repair including testing and commissioning GI tubing medium grade size 20 mm in fixed to wall/ceiling including required GI fitting complete all as specified and directed.

S&F in repair bib tap/stop cock 15mm bore standard of PTMT any colour screwed for iron pipe and fixed complete all as specified and directed.

Allied Agencies (BID ID -3199672)