REPAIRS/REPLACEMENT OF EARTHING, LIGHTENING ARRESTERS AND EARTHING STRIPS WITH ACCESSORIES FOR CERTAIN BLDGS AT INHS ASVINI

Amount

S&F in repairs air termination, single pointed aluminium rod 12mm dia and 300mm long fixed on roof with suitable size aluminium base square type and nut bolts etc.complete all as specified.

S&F in repairs air termination, single pointed copper rod 12mm dia and 300mm long fixed on roof with suitable size aluminium base square type and nut bolts etc.complete all as specified.

S & F in repairs Test point terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25mm drilled and screwed including 3 Nos. 8mm dia 25mm long hex. head screw complete all as specified.

S & F in repairs GI strip 25mm x 4mm earth continuity conductor or main erthing lead fixed to wall on batten or recess or chases or buried in ground or drawn in condduit/pipe or fixed to poles or any other indicated situation for loop earthling etc.complete all as specified.

- Ditto- all as per item No 4.00 above but aluminium strip of size 32mm x 6mm.

- Ditto- all as per item No 4.00 above but aluminium strip of size 25mm x 3mm.

- Ditto- all as per item No 4.00 above but aluminium strip of size 20mm x 3mm.

- Ditto- all as per item No 4.00 above but aluminium strip of size 32mm x 6mm.

M & L for earthing complete with G .l earth plate electrode 60cm x 60 cm x 6 mm thick burried directly in ground vertically (earth pit not less than 2.25 m deep below GL) with top edge of the plate not less than 1.5 m below the normal ground level connected with 4 mm dia GI earth lead by means of bolts, nuts, check nuts and washers of galvanised iron or steel including necessary excavation & earth work in any type of soil, removing surplus soil to out side MD land, including PCC chamber in PCC (1 : 2 : 4) type B1 (using 20 mm graded stone aggregate), mild steel frame made out of angle iron of size 40mm x 40mm x 6 mm thick duly painted with two coats of synthetic enamel paint over one coat of red oxide zinc chrome primer hinged with and including 6 mm thick Cl cover with handle , watering arrangement with funnel internally secured with wire mesh, 20 mm bore medium grade GI pipe for watering, 40 mm bore light grade Gl pipe for lead protection including alternate layer of charcoal dust and common salt complete all as shown in electrical plate No 3 on Srl page No 497 of SSR Part-I (2009) and connected to earthing test point all as specified and indicated including taking out old earthing , retrieving of old GI earth plate, CI cover, GI pipes, angle iron frame from existing earthing and testing on completion complete all as specified.

- Ditto- all as per item No 9.00 above but earthing with GI earth plate of size 60cm x 60cm x 6mm thick and 25mm x 4mm thick GI earth strip as earth lead

- Ditto- all as per item No 9.00 above but earthing with GI earth plate of size 60cm x 60cm x 6mm thick and 32mm x 6mm thick GI earth strip as earth lead

- Ditto- all as per item No 9.00 above but earthing with Copper earth plate of size 60cm x 60cm x 3mm thick and 25mm x 3mm thick Copper earth strip as earth lead

- Ditto- all as per item No 9.00 above but earthing with Copper earth plate of size 60cm x 60cm x 3mm thick and 32mm x 6mm thick Copper earth strip as earth lead

S & F in repairs GI wire 4mm dia earth continuity conductor or main erthing lead fixed to wall on batten or reces or chases or buried in ground or drawn in condduit/pipe or fixed to poles or any other indicated situation for loop earthling etc.complete all as specified.

Excavating in trenches n exc 1.5m wide & n exc 1.5m in depth; for laying of earth lead and getting out in any type of soil complete all as specified.

Returning filling in , including spreading, leveling, watering and well ramming in layers not exc 25 cm.

Removing excavated material n.exc 50 m and depositing where directed at a level n.exc 1.5 m above the starting point.

S & F in repairs GI pipe 40 mm bore light grade for protection of cable laid in trenches or fixed to poles/wall with and including suitable size GI clamps complete all as specified.

S & F in repairs GI pipe 20 mm bore light grade for protection of cable laid in trenches or fixed to poles/wall with and including suitable size GI clamps complete all as specified.

M&L for PCC 1:2:4 type B2 (using 40 mm graded stone aggregate) in filling of road cutting/ hard standing and finishing top surface even and smooth without using extra cement.

AGRAWAL ASSOCIATES

Shree Ayyappa Engineering