New Earthing Arrangements for all Sophisticated Analytical Instruments of CIFS Department at CSIR-CFTRI, Mysore

Amount

Labour charges for digging upto 10 feet, fixing the Item No:2, refilling of soil (along with charcoal / coke and salt from Item No:2 as required, already estimated under Item No:2)

Earthing with copper earth plate 600 mm x 600 mm x 3 mm thick including accessories, and providing masonry enclosure with cover plate having locking arrangement and watering pipe of 2.7 metre long etc. with charcoal / coke and salt as required. Note: Masonry enclosure size is 1.5 Feet x 1.5 Feet x 1.5 Feet. As per IS 3043, charcoal / coke and salt should be refilled with 50 Kg each per earthpit. The copper plate has to be tinned, connected copper flats have to be brazed and only SS nut, bolts and washers are to be used.

Providing and laying earth connection from earth electrode with 4.00 mm dia copper wire in 15 mm dia G.I. pipe from earth electrode including connection with copper thimble excavation and re-filling as required.

Providing and fixing 4.00 mm dia copper wire on surface or in recess for loop earthing along with existing surface / recessed conduit / submain wiring / cable as required.

Providing and fixing earth bus of 50 mm X 5 mm copper strip on surface for connections etc. as required.

Supplying and fixing of 20 mm sizes of medium class PVC conduit along with accessories in surface/recess including cutting the wall and making good the same in case of recessed conduit as required. PVC Conduit Make: VIP / Joegeetha / Supreme / Modi's

Wring for circuit / submain wiring alongwith earth wire with 2 x 4 sq.mm size of FRLS PVC insulated copper conductor, single core cable in surface/ recessed medium class PVC conduit as required. Wire Make : Havells / Finolex / Standard / V-Guard. PVC Conduit Make: VIP / Joegeetha / Supreme / Modi's.

Supplying and fixing metal box of 250 mm (L) X 300 mm (H) X 60 (D) mm deep size (nominal size) on surface or in recess with suitable size of phenolic laminated sheet cover in front including painting etc. as required.

Demolishing cement concrete Nominal concrete 1:3:6 or richer mix (i/c equivalent design mix) manually / by mechanical means including disposal of material within 50 metres lead as per direction of Engineer-incharge.

18 mm cement plaster in two coats under layer 12mm thick cement plaster 1:5 (1 cement : 5 coarse sand) finished with a top layer 6 mm thick cement plaster 1:6 (1 cement : 6 fine sand).

AKSHAYA ASSOCIATES

St Joseph Electricals

SRS ELECTRICALS