REPAIR/REPLACEMENT OF EARTHING WORKS, REPLACEMENT OF EARTHING STRIPS, LIGHTENING CONDUCTOR/ ARRESTOR WORKS, STREET LIGHT POLE AT TECH AREA AT BASE CAMP UNDER GE (AF) THOISE AND AT AF STN THOISE

Amount

Taking down air termination rod complete all as specified and as directed.

Taking down strip any size complete all as specified and as directed.

Taking down old unserviceable earthing complete all as specified and as directed.

M&L for Air termination, single pointed, copper rod 12mm dia and 300mm long complete all as specified and as directed.

M&L for copper Strip of 20 x 3mm, ISI Marked to interconnect the earth pit to Equipment Room/ LT panel. Bus bar, DG set complete all as specified and as directed.

M&L for Copper Strip 20x3.15 mm with saddles and fixing screws etc for roof conductors and down conductors above ground to interconnect the earth pit complete all as specified and as directed.

M&L for Aluminum strip of 25 x 3mm, ISI Marked to interconnect the earth pit to LT Panel, Bus bar complete all as specified and as directed.

M&L for Chemical earthing (Bentonite gel based) complete with copper earth plate size 90x90x5mm buried directly vertically in ground with top edge not less than 3.10 metres below ground level connected with copper earth strip of 32x6 mm in stretch and connected to test point including chemical gel magnesium sulphate salt and coal mixture in each layers with IS Specification & including necessary excavation/earth work in any type of soil/rock strata, funnel with wire mesh and watering pipe (GI light grade) 20 mm dia PCC pit 50 mm thick PCC cover etc including testing on complete including GI connection pipe for earthing lead all as directed at site by Engineer-in-charge all as specified and indicated. Chemical use in earthing as below. (i) Bentonite gel - 75 Kg (ii) MgSO4 = 160 Kg (iii) NaCl = 100 Kg (iv) Charcoal = 140 Kg Note : Excavation work should be done by manpower only. (Earth test should be done by contractor and if required result is not found satisfactory entire earthing should be done by contractor again)

Earthing complete with copper plate electrode 600x600x3.15mm thick electrode burried directly in ground not less than 3.0 mtr deep below normal ground level with top edge of earth plate not less than 2.5 mtr below normal ground level connected to and including 20x3 mm copper strip as earth lead by means of bolt, nuts, check nuts, and washers of stainless steel and duly welded including PCC pit in PCC 1:2:4 type B-I angle iron 40x40x3mm frame, pit in PCC 1:2:4 type B-I cover 40mm reinforced with XPM weight not less than 4 Kg/Sqm and 6mm dia bar handle, excavation and earth work in any type of soil, charcoal dust and salt light grade GI watering pipe 20mm bore with funnel and wire mesh and medium grade GI protection pipe 40mm bore and earth wire up all as shown in electrical plate No 3 of MES SSR- Part-I all as directed and specified by Engineer-in-charge. Note : Excavation work should be done by manpower only and excavation rate is included in the quoted rate. ( Earth test should be done by contractor and if required result is not found satisfactory entire earthing shall be done by contractor again)

S&F in repair GI pipe medium graded 40 mm dia 0.90 meter long with 300x300x3.15 MS base plate welded and embedded in concrete complete all as specified and as directed.

S&F porcelin insulator 15 BMD type with nut bolts and screws for fixing copper strips on walls/roof etc complete all as specified and as directed.

S&F test point terminal block made of gun metal or phosphorus bronze size 75x75x25mm drilled and screwed including 3 nos. 8mm dia 25mm long hexagonal head screw complete all as specified and as directed.

M&L for PCC earthing pit complete with RCC cover 50 mm thick, 4 mm dia galvanised wire, mesh, funnel size as per electrical plate No 3 complete all as specified and as directed.

Rendering 10 mm thick in CM(1:4) on fair faces of concrete finished even and fair complete all as specified and as directed.

M&L for Fixing arrangement of lightening arrester, welding materials & labour at roof top where required complete all as specified and as directed.

Earthing complete with galvanised steel earth plate electrode 600x600x6mm burried directly in ground not less than 3.0 mtr deep below normal ground level with top edge of earth plate not less than 2.5 mtr below normal ground level connected to and including galvanised earth lead wire 4.0 mm dia by means of bolt, nuts, check nuts, and washers of galvanised iron including PCC pit in PCC 1:2:4 type B-I angle iron 40x40x3mm frame, pit in PCC 1:2:4 type B-I cover 40mm reinforced with XPM weight not less than 4 Kg/Sqm and 6mm dia bar handle, excavation and earth work in any type of soil, charcoal dust and salt light grade GI watering pipe 20mm bore with funnel and wire mesh and medium grade GI protection pipe 15mm bore 5 Mtr long and earth wire up to main earthing of pole complete all as shown in electrical plate No 3 of MES SSR- Part-I all as directed and specified. Note : Excavation work should be done by manpower only and excavation rate is included in the quoted rate. ( Earth test should be done by contractor and if required result is not found satisfactory entire earthing shall be done by contractor again)

S&F on load change over switch side handle operated type with sheet metal enclosure TPN of capacity 630 Amps 415 volt 50 Hz complete all as specified and as directed. Make : L&T/Havells/Legrand

S&F in repair factory made Cable route indicator fixed on PCC block 30x15x15cm suitable for LT complete all as specified and as directed

M/S NINDI BUILDERS

M/S BALI CONSTRUCTIONS