Renovation of DD mines substation including upgrading electrical infrastructure by installation of circuit breakers in the switchyard from existing indoor arrangements and making connections through busbar at DD mines substation in respect of Bokaro

Amount

Supply of round finished polished Aluminium tube for busbar of dia approx 50mm and thickness 3mm (Weight: 1.390/kg per metre. Total length 70 Metre x 1.390/kg = 97.3 kg)

Fitting and fixing charges for installation and commissioning of Aluminium bus bar

Providing and fixing of pad connector suitable for bus pipe having outer dia approx 50mm

Providing and fixing of T connector suitable for bus pipe having outer dia approx 50mm

Providing and fixing of connector of alloy aluminium pipe to pipe suitable for bus pipe having outer dia approx 50mm

Providing and fixing of support connector suitable for bus pipe having outer dia 50mm

Providing and fixing of Bi-metallic connector

Supply and providing of 50 mm x 6 mm copper flat for making of Z shape

Fiting, fixing including fabrication charges for Z

Supplying and erection of three piece nonlinear resistor type lightning arrestor suitable for 3 wire, 11 KV overhead lines with rated voltage 9 KV (rms) with a nominal discharge current rating of 5 KA and complete with galvanised clamping arrangement, G.I. bolts, nuts, washers etc. as required.

Providing and fixing of corrosion resistant 11kV post insulator

Re-organization, handling including dressing of HT cables to a safe place to avoid any hindrance in the workplace and again handling and placement of cable as as per instruction of Engineer In-Charge

Supplying and making outdoor cable end termination with heat shrinkable jointing kit complete with all accessories including lugs suitable for following size of 3 core, XLPE aluminium conductor cable of 11 KV grade as required : 70 sq. mm

Surface dressing of the ground including removing vegetation and inequalities not exceeding 15 cm deep and disposal of rubbish, lead up to 50 m and lift up to 1.5 m.

Supply, laying and uniform spreading of gravels of size 50mm (approx) compacted to a thickness of around 100mm

12 mm cement plaster of mix : 1:4 (1 cement: 4 fine sand)

Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in: Cement mortar 1:4 (1 cement : 4 coarse sand)

Supplying and filling in plinth with Jamuna sand under floors, including watering, ramming consolidating and dressing complete.

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by Engineer-incharge. 2.6.1 All kinds of soil

Centering and shuttering including strutting, propping etc. and removal of form for 5.9.1 Foundations, footings, bases of columns, etc. for mass concrete

Filling available excavated earth (excluding rock) in trenches, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 metres.

Providing and fixing H.T. danger notice plate of 250 mm X 200 mm, made of mild steel, at least 2 mm thick, and vitreous enameled white on both sides, and with inscription in single red colour on front side as required.

Supply of three pole 11KV 400A isolator with all acessories such as handle

Assembling and installation of line/bus isolator on the isolator structure adjusting of opening mechanism in proper alignment so as to ensure smooth operation of the same in case of line isolator

Providing and fixing of Electrical / mechanical interlock arrangement between isolators and breaker with all required material.

Shifting carefully & safely 11KV/ 3.3KV switchgear from inside of the switchgear room, including grouting the two nos 100x50x6mm channels pieces (each 800mm long including cutting to size) and foundation bolts in 1:2:4 CC (including cutting of CC of the floor and finishing of floor) as per direction of Engineer in-charge, placing and fixing of switchgear on foundation providing G.I. Nuts & Bolts of proper size in proper position and alignment and checking (hydra/crane is to provided by the agency)

Excavation for cable trenches in soft soil, depth upto 1.2 m including dressing of sides lift upto 1.5 m, including getting out the excavated soil, refilling with sand and or good soil after laying of cable/ pipe etc in layers of 20 cm, ramming, watering and disposal of surplus excavated soil as directed, within a lead of 50 metres.

Supplying and installing following size of perforated pre-painted M.S. cable trays with perforation not more than 17.5%, in convenient sections, joined with connectors, suspended from the ceiling with M.S. suspenders including bolts & nuts, painting suspenders etc as required. 100 mm width X 50 mm depth X 1.6 mm thickness

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 : 5.1.2 1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources)

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor, etc. up to floor five level, excluding the cost of centering, shuttering and finishing : 1:1½:3 (1 cement : 1½ coarse sand :3 graded stone aggregate 20 mm nominal size)

Earth work in excavation by mechanical means (Hydraulic excavator)/ manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 sqm on plan) including getting out and disposal of excavated earth lead upto 50 m and lift upto 1.5 m, as directed by Engineer-incharge. 2.6.1 All kinds of soil (for preparation of earthing pits 1M X1M X3M and for laying of MS Flats)

Supply and embedding of GI pipe of size 40mm 3 mtrs long and Back filling with BFC compound (25kg x4 bags for each pit) free from boulders. These GI pipe are to be welded with MS Flat at various places by making mesh frame and cutting of pipes as also making holes in the pipe for water seepage. (The earth pit is to be connected with earth mesh of MS Flat at a depth of 0.5 M).

Providing and fixing 25 mm X 5 mm G.I. strip on surface or in recess for connections etc. as required

Providing and fixing concertina coil fencing with punched tape concertina coil 600 mm dia 10 metre openable length ( total length 90 m), having 50 nos rounds per 6 metre length, upto 3 m height of wall with existing angle iron ‘Y’ shaped placed 2.4 m or 3.00 m apart and with 9 horizontal R.B.T. reinforced barbed wire, stud tied with G.I. staples and G.I. clips to retain horizontal, including necessary bolts or G.I. barbed wire tied to angle iron, all complete as per direction of Engineer-in-charge, with reinforced barbed tape(R.B.T.) / Spring core (2.5 mm thick) wire of high tensile strength of 165 kg/ sq mm with tape (0.52 mm thick) and weight 43.478 gm/ metre (cost of M.S. angle, C.C. blocks shall be paid separately)

Supervision, overhead and other incidental cost including contractor's profit @10% of estimated cost

Total impact of GST for the purpose of CTC