REPAIR TO ROOF INCLUDING CONNECTING ITEMS OF OTM ACCN AT TECH AREA UNDER AGE B R-II AT AF STN CHABUA

Amount

Dismantling asbesots cement (corrugated, semi-corrugated etc) sheets in roof coverings Complete all as specified and directed.

S&F MS work as in main, truss,purling, rafter, rails and fastenings and heavy bracket, Framing (Beam, tee, angle, channel, Round or flat sections) including distance pieces, cleats etc with Fe 410.0 or Fe-310.0 complete all as specified and directed.

S & F gusset plates etc incl necessary welding drilling for fixing etc all as specified and directed

M&L for preparation of new or previously untreated surfaces of steel of any description over 10 cm width or girth not otherwise described and applying two coats of synthetic enamel paint over a coat of red oxide primer complete all as specified and directed.

S&F prepainted galvalume aluminium zinc coating GI based corrugated steel sheet 0.50 mm thick of colour having tensile strength of 550 Mpa as in roof covering/cladding to wall, fixed with self tapping screws or 'J' / 'L' hooks all as specified and directed.

All as per item No No. 5 here in before but plain sheet as in ridges, gutters , facia etc complete all as specified and directed

Dismantling wall and ceiling boards (fibre, pulp, insulation etc) or insulation boards/slabs/blankets any thickness including cover fillets complete all as specified and directed

S&F for suspended false ceiling using anodised GI exposed ceiling suspension system of grid size 60 cm x 60 cm width main runner 'T" section of size 38 mm x 24 mm x 0.4 mm thickness and wall angle of size 24 mm x 24 mm x 0.3 mm thickness and cross Tee of size 24 mm x 24 mm x 0.43 mm thick (using 60 cm x 60 cm E board classic 4 mm thick ceiling board ) to be placed in a grid of GI system duly suspended with 4 mm dia GI bar hanger fixed with steel dash fasteners or iron purlin from the roof with adjustement clip providing position for light fixtures, air conditioning dufuser and ducks, sprinkler, smoke detector etc. The main runner to be secured to structrural soffit by hanger @ 1220 mm maximum C/C. The last hanger at the end of each runner should not be placed at more than 450 mm from the adjacent wall. Flush fitting 1200 mm cross 'T" to be inter locked between main runner @ 610 mm C/C so asto form 600 mm x 600 mm grid complete all as directed

Demolition of brick work built in cement mortar complete all as specified and directed

M&L for brick work with sub-class 'B' bricks straight or curved on plan 6 mtr mean radius built in cement mortar (1:6) Complete all as specified and as directed.

M&L for brick work with sub class 'B' bricks, straight or curved on plan exc 6 m mean radius in half brick thick wall built in CM 1:4 complete all as specified.

Taking down cement plaster of any description and in any position of brick/concrete surfaces on walls/celing etc. including racking out joints, hacking for key, scrubbing down with water etc & prepared to receive new plaster complete all as specified and directed.

M&L for 15 mm thick rendering in cement mortar on fair faces of brick work or concrete surfaces , applied in two layers ie. Ist layer of 10 mm thick rendering in cement mortar (1:6 ) and 2nd ( top ) layer of 5 mm thick rendering in cement mortar (1:4 ) and top layer mixed with water proofing compound as per manufacturer's instruction & finished even and smooth without using extra cement including taking down existing cement plaster of any description and in any position and racking out joints, hacking for key, scrubbing down with water etc & prepared to receive new plaster complete all as specified and directed. (Note:- Water proofing compound shall be measured and paid seperately under appropriate item of Sch 'A' as "supply only")

M&L for rendering 15 mm thick in CM (1:6) on fair faces of brick work or conrete surfaces/stone masonary and finishing the surfaces even and smooth without using extra cement complete all as specified and directed.

M&L for rendering 5 mm thick in Cement Mortar (1:3) on ceiling finished even and smooth without using extra cement complete all as specified and directed.

Cutting out cracks to V-section in existing roofs or terracing, cleaning out and filling solidly with a hot mixture of bitumen and clean dry sand 1:1 (by weight) complete all as specified and directed

Extra over rendering or plastering for work in isolated widths or in widths not forming part of general plastering such as in bands, sunk panels, cornices, skirtings, drip moulds and similar work exc 15 cm but n exc 30 cm in width or girth; including cutting to edges, all mitres and stopped ends, etc upto double story building.

M&L for applying two coats exterior grade emulsion paint on newly plastered surface of wall over a coat of primer including preparation of surface (In camouflage pattern) all as specified and as directed.

M&L for two coats of Oil bound distemper on wall surfaces on newly plastered surface of wall including preparation of surface and applying 3 mm thick wall careputty complete all as specified and directed.

M&L for three coats of white wash on newly plastered surface of ceiling including preparation of surface, complete all as specified and as directed.

Supply only water proofing compound all as specified and directed.

Taking up or down steel tubing and connection of 15 mm bore tube of any description & in any position complete all as specified and directed.

All as per item No 22 here in before but 20 mm bore tubing.

Supply and fixing unplastisized PVC pipe, 15mm dia (nominal) of pressure rating 10 per centimeter square complete with fittings and fixed to walls/ ceiling/floors etc in required length complete all as specified and directed

Supply and fixing unplastisized PVC pipe, 20mm dia (nominal) of pressure rating 10 per centimeter square complete with fittings and fixed to walls/ ceiling/floors etc in required length complete all as specified and directed

Cutting chases, pinning in, making good to facings where required and pointing in cement mortar 1:3 to ends or edges of landings, steps, cills, sunshades, shelves, lintels, etc.; and cutting chases for concealed water tubing or concealed conduit wiring, etc., and making good, cutting not exc 10 cm girth

Dismantling timber scantling in framed or unframed in any section, in any position of framed work complete all as directed

M&L for IInd class hardwood in scantling timber framed and fixed wrought in any position and in any situation complete all as specified and as directed.

D.D Construction (BID ID -3315739)

M/S D P BERLIA (BID ID -3315840)

M/S RK Trading (BID ID -3316756)

M/S MAHATO ENTERPRISE (BID ID -3314703)

M/s Krishna Construction (BID ID -3314747)

M/s KL Agarwalla & Co (BID ID -3314338)

M/S DURGA CONSTRUCTION & CO (BID ID -3314219)