SPECIAL REPAIR TO EARTHING AND LIGHTENING CONDUCTOR AT VARIOUS TECHNICAL BUILDING AT BRD UNDER GE (AF) MC CHANDIGARH

Amount

Material and labour for Earthing complete with GI earth plate electrode 600 x 600 x 6 mm thick burried directly in ground (earth pit not less than 2.5 m deep below ground level) with top edge of plate not less than 1.5 m below normal ground level, earth pit surrounded by 15 cm thick and packed layers of charcoal, dust and common salt, including GI wire 4 mm dia as earth lead fixed by means of nuts, bolts, check nuts and washers etc and other end connected to the test point including 15 mm dia light grade GI protection pipe and watering pipe 20 mm dia medium grade with funnel and wire mess including necessary earth work, PCC earth pit chamber in PCC 1:2:4 using 20 mm graded stone aggregate with precast RCC pit cover 80 mm thick etc all as shown in electrical plate No. 3 including dismantling old earthing, complete all as directed and specified. Note:- (i) The Earth resistance value must be less than 5.0 Ohms (ii) Rates of GI wire 4mm and protection pipe upto 7.5m is deemed to be included in quoted rates.

Material and labour for Earthing complete with copper earth plate electrode 600 x 600 x 3.15 mm thick burried directly in ground (earth pit not less than 2.5 m deep below ground level) with top edge of plate not less than 1.5 m below normal ground level, earth pit surrounded by 15 cm thick and packed layers of charcoal, dust and common salt, including Copper strip 20 x 3mm as earth lead fixed by means of nuts, bolts, check nuts and washers etc and other end connected to the test point including 40 mm dia light grade GI protection pipe and watering pipe 20 mm dia medium grade with funnel and wire mess including necessary earth work, PCC earth pit chamber in PCC 1:2:4 using 20 mm graded stone aggregate with precast RCC pit cover 80 mm thick etc all as shown in electrical plate No. 3 including dismantling of old earthing, complete all as directed and specified. Note:- (i) The Earth resistance value must be less than 3.0 Ohms (ii) Rates of Copper strip 20 x 3mm and protection pipe upto 7.5m is deemed to be included in quoted rates.

Material and labour for Earthing complete with GI earth plate electrode 600 x 600 x 6 mm thick burried directly in ground (earth pit not less than 2.5 m deep below ground level) with top edge of plate not less than 1.5 m below normal ground level, earth pit surrounded by 15 cm thick and packed layers of charcoal, dust and common salt, including GI strip 25 x 4mm as earth lead fixed by means of nuts, bolts, check nuts and washers etc and other end connected to the test point including 40 mm dia light grade GI protection pipe and watering pipe 20 mm dia medium grade with funnel and wire mess including necessary earth work, PCC earth pit chamber in PCC 1:2:4 using 20 mm graded stone aggregate with precast RCC pit cover 80 mm thick etc all as shown in electrical plate No. 3 including dismantling old earthing, complete all as directed and specified. Note:- (i) The Earth resistance value must be less than 5.0 Ohms (ii) Rates of GI strip 25 x 4mm and protection pipe upto 7.5m is deemed to be included in quoted rates.

Material and labour for Earthing complete with GI earth plate electrode 600 x 600 x 6 mm thick burried directly in ground (earth pit not less than 2.5 m deep below ground level) with top edge of plate not less than 1.5 m below normal ground level, earth pit surrounded by 15 cm thick and packed layers of charcoal, dust and common salt, including GI strip 32 x 6mm as earth lead fixed by means of nuts, bolts, check nuts and washers etc and other end connected to the test point including 40 mm dia light grade GI protection pipe and watering pipe 20 mm dia medium grade with funnel and wire mess including necessary earth work, PCC earth pit chamber in PCC 1:2:4 using 20 mm graded stone aggregate with precast RCC pit cover 80 mm thick etc all as shown in electrical plate No. 3 including dismantling of old earthing, complete all as directed and specified. Note:- (i) The Earth resistance value must be less than 5.0 Ohms (ii) Rates of GI strip 32 x 6mm and protection pipe upto 7.5m is deemed to be included in quoted rates.

Material and labour for Chemical earthing complete with copper earth plate electrode 600 x 600 x 6 mm thick burried directly in ground (earth pit not less than 3.5 m deep below ground level) with top edge of plate not less than 2.5 m below normal ground level, earth pit filled with Magnesium Sulphate (MgSO4) 15 cm or suitable chemical to desire level to obtain result less than 1.0 Ohms all around the plate including connection with and including copper strip 32 x 6mm as earth lead fixed by means of copper nuts, bolts, check nuts and washers etc and other end connected to the test point including 40 mm dia light grade GI protection pipe and watering pipe 20 mm dia medium grade with funnel and wire mess including necessary earth work, PCC earth pit chamber in PCC 1:2:4 using 20 mm graded stone aggregate with precast RCC pit cover 80 mm thick etc including dismantling old earthing, complete all as directed and specified. Note:- (i) The Earth resistance value must be less than 1.0 Ohms (ii) Rates of copper strip 32 x 6mm and protection pipe upto 7.5m is deemed to be included in quoted rates.

S&F in replacement of Aluminium strip of size 25 x 3 mm complete with porcelain insulators of suitable size and fixing screws for fixing the strip as earth continuity conductor or main earthing lead to wall on insulator or recess or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc as required complete all as directed.

S&F in replacement of copper strip of size 20 x 3 mm as earth continuity conductor or main earthing lead to wall on insulator or recess or chases or burried in ground or drawn in conduit/pipe or fixed to poles or any other indicated situation for loop earthing etc as required complete all as directed.

Supply and fix in replacement of Air termination, single pointed aluminium rod 12mm dia and 300 mm long as per site requirement with saddle complete all as directed .

S&F in replacement of Test point terminal block made of gun metal or phosphorus bronze size 75 x 75 x 25 mm drilled and screwed including 03 Nos 8 mm dia 25 mm long hexagonal head screw complete all as directed.

S&F in replacement of porcelain insulators 15 BMD size T type with nut bolts, screws for fixing of copper/aluminium/GI strip on wall or roof etc complete all as specified and directed.

Note:- Amount of credit of Rs. 262180.00 for retrieved materials is mentioned in Schedule of Credit of tender documents in pdf form which will be deducted offline while acceptance of tender.

R D Bansal

SANJEEV ENTERPRISES

HARISH SALES CORPORATION

Jai Maa Electrical Works

Bharat Enterprises

M/S MG GROUP

UNITED ENGINEERING CORPORATION