Supply and erection of 17 nos. of chemical earth pits with brick enclosure and cover plate to be erected at Ara Kanta Sub-station (11No.), DAV Ara (3No.) and Feeder breaker (3No.)

Amount

supplying and erecting earth pit of minimum bore dia 150mm size approved make Safe Earthing Electrode consiating Pipe-in-Pipe lachnology as per IS 3043-1987 made of corrosion free G Poes with constant ohmic value surrounded by highly conductive compound with i igh charge dissipation suitable for effective anil maintenance free eaching as mentioned below: With 3 mtr. GI Ploes having outer pipe dia of 50mm having 80-200 micron galvanizing, Inner pipe dia of 25mm haling 200-250 Micron galvanizing, connection leminal dia of 12:min in nominal sol with 50 kg (Two Bag) Back filing Compound. Ara Kanta Sub-station- 11No, DAV Ara-3No for 100KVA tranformer neutral and body grouding and Feeder breaker-3No. for 100KVA tranformer neutral and body grouding

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual mea is over areas lexceeding 30 cm in depth, 15 m inw/ith as well as 10 som on plan) including disposal of excavatedearth, lead upto 1.5 m, disposed earth to be levelledand neatly dressed. 2.8.1 Ordinary rock For earthpit enclosure 0.5 Mir X 1.5 Mir X 0.5 Mtr X 17 no. 1.88 CUM

Brick work with common burnt clay moduler bricks of class designation? 5 in foundation and plinth in Cement mortar 1:4 (1 cement 4 coarse sand) For Earthpit enciosure 1 X 0.5M X 0.13M X 2 wall 1M X0.24M X 0.13M x 2 wall- 0.1924 Cu.M. x 17 earthpit 2.89 Cu M.

Cement plaster skirting up to 30 cm height, with cement mortar 1:3 (1cement 3 coarse sand), finished with a floating coat of neat cement. 18 mm thick For earthpit 0.5 Mtr X 0.5 Mtr X 4 wall X 2 Side x 17 = 34 SQM.

Providing and laying in position specified grade of reinforced cement concrete, excluding the cost of centering, shuttering. finishing and reinforcement - All work up to plinth level 1:2:4 (1 cement: 2 coarse sand (zone-III) derived from natural sources: 4 graded stone aggregate 20 mm nominal size de rived from natural sources) Earthpit cover 0.5 Mtr X 0.5 Mtr X 0.13 Mtr X 17 = 0.51 Cu.M

Steei reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding ail complete upto plinth level Mild steel and Medium Tensile steel bars Steel Reinforcement for RCC work-7850 Kg/CuM (density of steel) x 0.51 Cu.M (volume of RCC) x 01 (1%)

Supply & installation of Aluminum armoured cable single core 1100 voltage grade 35 sq mm. for earh connection 15 Mtrs. X 17

Supply & installation of Aluminum Tubular Lug 35 sq mm for earh connection

Total impact of GST for the purpose of CTC

M/s Achal Electricals (BID ID -1145161)

M/S VAISHALI ELECTRIC COMPANY (BID ID -1145204)