CERTAIN REPAIR TO ROOFS MD OFFRS ACCN AND TECH AREA AT AIR FORCE STATION AMRITSAR

Amount

M&L for Dismantling of brick tiles or terracing tiles single layer along with coping and ghol on roofs all as specified and directed

Demolition of Mud in roof any thickness including plastering and leeping (Whether full thickness removed or only a part therof) including removal outside defence land as directed by Engr-in-charge.

M&L for brushing neat cement slurry with 3.0 kg per sqm complete all as specified and directed.

M & L for providing cement concrete type B1 1:2:4 (20 mm graded aggregate) in roof, Kerb or mud stops, rounded chamfered on edges before treatment of roof surface all as specified and directed by EIC.

M&L for Cement concrete type B-2 (1:2:4) using 20 mm graded stone aggregate mixed with & incl. water proofing compound as in roof padding / floor subbase averaging thickness of 50 mm on roof to maintane slope correction of the depresses/ unduation portion complete all as specified. Note : WPC shall be measured and paid separately.

Supply water proofing compound to mixed with cement mortar etc complete all as directed by Engineer in charge.

M&L for APP based polymeric membrane minimum weighing 3 kg/sqm and minimum 3 mm thick reinforced with polyster non wove fabric( wt. not less than 150 gms/sqm) land on primed surface by forced application complete all as specified and applying evenly a tack coat of industrial bitumen 85/25 at the rate of 1.2 kg per sqm including cleaning surfaces complete all as specified.

Note: Sheet should be five layered prefabricated Atactic Polypropyleen Polymer (APP) modified 3 mm thick membrane (weighing not less than 3 kg/sqm) reinforced with 160 gsm polyester non- woven fabric. Concrete of roof surface shall be scratched with scratched tool before finishing roof surface when the concrete surface is still green,10mm thick 1:4 cement plaster shall be laid .The roof surfaces shall be throughly wire brushed, washed, dried up and cleaned to all foreign matter nd dust prior to the appliction of primer. On the dried surface one coat of approved bituminous primer, having density in the range of 0.87 to 0.89 kg/litre at 25 degree centigrade and viscosity of 40 to 160 CPS, manufactured by same manufacturer @ 0.4 litre / sqm shall be applied. APP membrane shall be laid on primed surface by torch application method after allowing 24 hours for primer to dry . Laying off APP membrane will normally be laid in length at right angle to the direction of slope. The overlaps shall be of minimum 100mm on longitudinal direction and 150 mm on the transverse direction. all overlaps shall be bonded with bitumen primer and levelled by heating the overlaps with brutane torch. the treatment shall be done by the approved authorised applicatiors.

Material and Labour, 40mm thick brick tiles laid on and including 15 mm thick cement screed bed in CM (1:6) using grey cement and grouted flush in cement mortar (1:3) mixed with 5% of crude oil by weight of cement laid on concrete roof, complete all specified and directed.

All a per Srl item No 8 above but except tiles (old serviceable dismantled tiles obtained from Srl item No 1 shall be reused after necessary cleaning of mortar)

M&L for removing existing poinintg & Flush pointing to bricks laid flat or brick tiles in pavings and pointing with CM (1:3) with crude oil 5% wt of cement complete all as specified.

M&L for cutting or uprooting grass on old mud phuska/brick tiles,removing rubbish off from the premises,cleaning surface and preparation of surface all as specified and directed .

Taking down chowkats or frames with shutters (without taking off shutters from the frames) not exc. 1.5sq.m each complete all as specified and directed.

Taking down chowkats or frame with shutter exc 1.50sqm but n.exc 4Sqm each (without taking off shutter from the chowkats) and making good the ditrubed surface complete all as spd and directed

Pressed steel frames made out mild steel sheet 1.25 mm thick, with size of frame 125 mm x 60 mm for doors with one or more rebates including necessary fixing lugs, hinges, lock strike plates etc and applying a shop coat of red oxide primer including providing PCC 1:3 :6 type C-0 using 12.5 mm graded crush stone aggregate for filling back of chowkhats complete all as specified and as directed by the Engineer-in-Charge

S & F for flush shutters, solid core construction, with block board core and plywood face panels, commercial type on both sides, thickness 30 mm,etc complete all as spd and directed.

S & F 35 mm,2nd class hard wood factory made, Glazed and skeleton shutters, open rebated and prepared to receive glass,gauze, etc. (without sash bars), edges of framing plain, chamfered or rounded. fitted with cut and mitred beads for securing glass,etc.; sizes of me-mbers of shutters as specified in SSR Part I, Section 8, clause 8.24 (a);,etc complete all as spd and directed.

M&L for Solid PVC Door Frames of size 50mm x 47mm made out of 5mm wood grain PVC sheet reinforced with M.S. Square tube , supplying & fixing in opening as per specification & drawing complete all as specified and as directed.

S&F Factory made solid panel PVC door shutter 30 mm thick (style) consisting of frame made out of M.S. tubes for top & bottom rails. M.S. frame shall be covered with heat moulded plain colour PVC ‘C’ channel having a PVC sheet strip of 20mm width stuck inside with solvent cement for stiles and wood grain printed PVC sheets used instead of plain color and 5mm thick x 15mm wide PVC shhet eading used inside stiles and rails and decorative pvc beading of 10mm x 10mm used instead of exposed portion of PVC sheet beading for top rail, lock rail & bottom rail on either side & as gap insert for top rail & bottom rail; Panelling of wood grain colour PVC sheet to be fitted in the M.S. frame welded / sealed to the stiles & rails with suitable PVC sheet beading, and joined together with solvent cement, suppling & fixing in the frame at site as per specification & drawing, complete all as specified and as directed.

S & F Galvanized mild steel wire cloth 0.56mm nominal dia of wire and average width of aperature 1.18 mm and fixed with tinned tacks or galvanised wire staple.

S & F 300 mm long ISI marked mild steel ordinary rat tail rod pattern door spring including roller and roller plate complete all as specified and directed by engineer incharge

S & F ISI marked floor door stopper of aluminium alloy body 140 mm cover plate and tounge , anodized with hard drawn steel spring fixed in floor as specified and directed by Engr-in-charge.

S&F 200 mm ISI marked in size aluminium, anodised, barrel tower bolts of extruded section and fixed complete all as specified and as directed.

S&F 150 mm ISI marked in size aluminium alloy anodised hasp & staple safety type with hinge pin including bolt to hinge plate and fixing with screws a minimum of 6 bolts and nuts, four on bolt plate and two on staple plate complete and fixing clips of sheet cast or extruded sections and fixed complete all as specified and as directed.

M & L preparing new wood & wood basd surfaces of any description, not otherwise described, over 10cm width or girth and applying two coats of synthentic enamel paint over a coat of pink primer complete all as specfied & directed.

M&L for dismantling of asbestos cement ( corrugated ,semi corrugated etc. ) sheets in roof coverings etc all as specified and directed by EIC.

M&L for dismantling timber scantlings 40 sq. cm and over in unframed section in any position all as specified and directed by Engr-in-charge .

S&F Pre-painted galvatume aluminum zinc coating GI based corrugated steel sheet 0.50mm thick of an colour having tensile strength of 550 Mpa as in roof covering/ cladding to wall, fixed with self tapping screws as specified.

Excavating in post holes( or similar holes) each n exc 0.5 cu.m. getting out and removing surplus soil to a distance n.exc 50 m and making good surface complete all as specified and directed by EIC.

M & L for PCC (1:3:6) type C-2 with using 40mm graded stone aggregate as in foundation, filling and mass concrete all as specified and directed

S& F Joist, channel, angle, or tee sections, fixed independently, without connecting plates, etc. (cut to ordinary lengths i.e. within 20mm of the length indicated) all as specified and directed by engineer in charge

S&F Steel work in tubular trusses including special shaped washer etc. complete using ERW or induction butt welded tubes conforming to I.S 1161-1979 grade St. 240 all as specified and directed by EIC.

M&L MS plate(plain or chequred)channels,square cut or notched (ordinary and counter sunk)forming holes, without any attachment also fastening and fixing completeall as specified and directed by EIC.

S&F mild steel bolts purpose made with hexagonal or square head one end and screwed the other , or screwed both ends; each screwed end to be fitted with washers and one hexagonal nut exc. 30 cm long , having dia not exc 12mm all as specified and directed by EIC .

M&L for Dismantling of CI/PVC pipe of 75/100mm dia fixed with cement joint.

S & F 110 mm PVC (SWR) pipe single socket in any length with rubber ring joints fixed in walls or floors all as specified and directed.

S&F PVC (SWR) bends with access door for 110 bore of pipe complete all as specified and as directed.

S&F 500 Ltr capacity, Rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position incl dismantling old tank all as specified in SSR Part I.

S&F 1000 Ltr capacity, Rotational moulded polyethylene water storage tanks (cylindrical vertical with closed top) hoisted and fixed in position incl dismantling old tank all as specified in SSR Part I.

S&F Gun metal globe or gate valves, with iron wheel head screwed both end for iron pipe and fixed of size 20mm dia complete as all specified and as directed.

S&F 20 mm bore Ball brass valves , high pressure , with polythene float valve and flynut complete , screwed for iron pipe or brass ferrule and fixed complete all as specified and as directed.

Disconnecting existing tank capcity 500 ltrs setting aside (or lowering if required ) for repair , cleaining, etc and hosting if required reconnecting and re-fixing in postion. (Cleaning and removing all scale and dirty etc from tanks and from mouths of circulating pipes etc.

M&L for Galvanised iron tubing 15mm bore,medium grade,with all fittings fixed to walls or ceiling or laid in floors, in concealed pipe work including making good the chases etc in cement mortar(1:3) after fixing of pipe,incuding taking down of old rusted/u/s GI pipe remove to store or credit, complete all as specified and directed.(Rates for cutting of chases is included in respective items of taking down).complete all as specified and directed

M&L for Galvanised iron tubing 20mm bore,medium grade,with all fittings fixed to walls or ceiling or laid in floors, in concealed pipe work including making good the chases etc in cement mortar(1:3) after fixing of pipe,incuding taking down of old rusted/u/s GI pipe remove to store or credit, complete all as specified and directed.(Rates for cutting of chases is included in respective items of taking down).complete all as specified and directed

Demolition of brick work built in cement mortar incl all quoins, arches, pillars etc complete all as specified and directed .

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

M&L rendering 15 mm thick in CM 1:4 on fair faces of new brick work or concrete surfaces , finished even and smooth without using extra cement all as specified and as directed.

M&L for preparing new plastered surface and applying two coats of whitewash on plastered surface of ceiling, walls all specified and directed by Engr-in-charge.

Dismantling floor,hearth or wall tiling including cement mortar bedding (but not backing), removing serviceable tiles to store and rubbish off the premises complete all as specified.

M&L for machine cut kota stone slb flooring & skirting 20-25 mm thick over cement screed base laid and jointed with grey cement slurry mixed with pigment to match the shade of the slab including ,cutting and mirror polishing and 20 mm thick screed bed or bedding layer for laying floor finishes in CM 1:4 complete all as specified and directed

Ditto all as per item No 2 above but as in dado, riser & skirting over & incl 10mm thick rendering in CM 1:3

M&L for polishing of Old surfaces on marble/ granite/ kota stone/ stoe work where ever required, intial preparation includes grounding the surface evenly with machine fitted with fine grade blocks (No. 120) thereafter final grinding with machine fitted with the finest grade grit blocks (No. 320) carried out the day after the first grinding completed. After the final polish, oxalic acid shall be dusted over the surface at the rates of thirty three (33) gms. per square metre sprinkled with water and rubbed hard with pad of wooden rags. The following day the floor shall be wiped with a moist rag and dried with a soft cloth and finished clean complete all as specified.

Procedure of roof treatment:- (i) Clean the roof:- M&L for preparation of surface by scrapping and properly cleaning the surface by removing loose/ uneven particles with wire brushes and other tools, complete in all respect (ii) Make small repairs and rendering:- Filling of cracks with smart Care Hybried PU sealant wherever requiered and applying 15mm thick rendering in CM 1:4 alongwith covering and applying smart care damp proof ultra and assure proper curing of plaster complete all as specified and directed by Engr-in-charge. (iii) Laying of membrane and undiluted coats:- Laying of fiber reinforced elastomeric liquid water proofing membrane formulated with PU hybrid polymers and reinforcing acrylic fibres with sun Reflectivity Index (SRI) of 105 on top of roof in three coats @ 1.2 litre/ sqm to be reinforced with 45 GSM fiber mesh, having minimum elongation of 350%, tensile strength 2.9 Mp and shall have crack bridging ability upto 2.5 mm and shall resist 10 bars of hydrostatic pressure, reduces surface temperature upto 10 degree celsius. The system conists of self priming with 33% ditution followed by two undiluted coats (dry film thickness of complete appliaction/ system not less than 500 microns). (iv) Ponding test:- Ponding test shall be done after application of material

Note: The Total amount shall subject to adjustment of credit for old Materials as per Schedule of Credit.

M/S SIMRAN WALIA ENTERPRISES (BID ID -3328633)

M/s AKG Engineers & Contractors (BID ID -3329511)

B S TRADERS (BID ID -3336727)

kapoor and co (BID ID -3327374)