Rebuilding of the Boiler Overhead Canopy and adjoining areas of Unit No.7.Job no. 905/DPPS.

Amount

Taking out carefully G.C.I. or C.I. or asbestos sheets (including ridges etc.) from roof or wall of pent house (72 mtr. height) after unscrewing bolts, nuts, screws etc.and stacking the material at site as directed.(Payment to be made on measurement of portion of roof or wall removed.).

Labour for lowering and stacking after dismantling from top of pent house (72 mtr. height) in parts R.S. joists, channels, angles, tees, plates etc. complete as directed.

M.S. structural works at 72 m height in columns, beams etc. with simple rolled structural members (e.g. joists, angles, pipes, bars, channel sections conforming to IS: 226, IS: 808 & SP (6)- 1964 connected to one another with bracket, gussets, cleats as per design, direction of Engineer-in- charge complete including cutting to requisite shape and length, fabrication with necessary bolting, metal arc welding conforming to IS: 816- 1956 & IS: 1995 using electrodes of approved make and brand conforming to IS:814- 1957, haulage, hoisting and erection all complete. The rates includes the cost of rolled steel section, consumables such as electrodes, gas and hire charge of all tools and plants and labour required for the work including all incidental charges such as labour insurance charges etc. All structural materials to be supplied by the agency. I) For Structural Works in Roof Trusses etc. using joists, channels and angles of specified section weighing less than 22.5 kg/ m.

Providing, fitting/fixing corrugated G.S. sheet roofing at 72 mtr height including vertical / curved surface fixed with polymer coated J or L hooks, screw, bolts and nuts 8 mm diameter with bitumen and G.I. limpet washers or with G.I. limpet washers filled with white lead, including a coat of approved steel primer and two coats of approved paint on overlapping of sheets complete (up to any pitch in horizontal/ vertical or curved surfaces), excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required. (G.S sheets to be supplied by contractor) 1.00 mm thick with zinc coating not less than 275 gm/m².

Providing and fixing of 40 cm overall width plain G.S. sheet 72 mtr height fixed with polymer coated J or L hooks, bolts and nuts, G.l. limpet and bitumen washer complete, bent to shape and fixed in wall with cement mortar 1:3 (1 cement : 3 coarse sand). 1.00 mm thick with zinc coating not less than 275 gm/m².

Providing valleys of 90 cm wide overall in plain G.S. sheet 72 mtr. height fixed with polymer coated J, or L hooks, screw, bolts and nuts 8 mm dia. G.I. limpet and bitumen washers complete: 1.60 mm thick with zinc coating not less than 350 gm/m².

Providing ridges or hips72 mtr height of width 60 cm overall width plain G.S. sheet fixed with polymer coated J or L hooks, screw, bolts and nuts 8 mm dia G.I. limpet and bitumen washers complete. 0.80 mm thick with zinc coating not less than 275 gm/m².

Taking out wind-tie from roof of pent house (72 mtr. height) including cutting out rusted bolts, nuts etc. and removing materials to any distance within the compound and stacking.

Galvanised or painted wind-tie made of M.S. flats, fitted and fixed complete at roof of pent house (72 mtr. height) including cost of necessary fittings. Made with 50 mm. X 10 mm. flats

Making one set of scaffolding only for replacing glass panels, painting, uprooting plant and another repairing works of building and S&P works for external works only at 72 m height with 10 cm. dia. bamboo as main posts at the rate of 1 metre centre to centre and 7.5 cm. dia. bamboo ties @ 0.75 metre apart fitting and fixing with necessary coir, nails etc. as per direction of the Engineer-in charge. (This item should be executed only after prior approval of the Engineer-in charge).

Fitting and fixing old pieces of asbestos, G.C.I. or C.I. sheets or plain sheets 72 mtr height including closing old holes with washers and sheet-bolts and nuts, etc. and including fixing the same to supporting frame with necessary hook-bolts, washers, putty etc. (excluding cost of sheets). (Payment to be made on area of finished work.) (ii) With all new fittings including the cost thereof.

A AND A Enterprise (BID ID -6689820)