CERTAIN REPAIR TO STEEL DOORS, ROOF SHEETS AND BIRD PROOFING AT NORTH SIDE OF RUNWAY AT AIR FORCE STATION JODHPUR

S&F MS flat iron for securing the chain link fencing/ stainless steel bird netting including necessary drilling for holes, cutting, punching, bending etc. complete all as specified and directed.

M&L for cleaning and greasing the top and bottom guide rails of MS sliding door complete all as specified and directed.

S&F in repairs gear box of steel rolling shutter including handle rack and pinion system, bearing etc. of rolling shuter size exceeding 5 Sqm but not exceeding 25 Sqm each complete all as specified and directed by Engineer-in-Charge.

S&F factory made steel rolling shutters with laths of thickness 1.0 mm, without ball bearing, as specified including top cover, anchoring rod, hasp and staple and one shop coat of primer; erected in position as indicated, complete: push, pull or manual type/ gear operated type with bevel gear box and crank handle including taking down existing old unserviceable, broken, rusted steel rolling shutter of any size and type complete all as specified and as directed by the Engineer-in-Charge.

Supply only helical wire rolling spring suitable for rolling shutter of area not exceeding 10 Sqm each complete all as specified and directed.

Supply only helical wire rolling spring suitable for rolling shutter of area exceeding 10 Sqm but not exceeding 25 Sqm each complete all as specified and directed.

Supply only MS sheet hood cover of 1.00 mm thick bent to shape match with existing brackets including stiffners of MS angles/ flat complete all as specified and directed.

Supply only pivoted flat bar 20x5 mm fixed with rivets in required position as in collapsible gates complete all as specified and directed.

S&F collapsible steel gates, consisting of channel pickets, pivoted flat bars, top and bottom runners, brass handles etc., as specified, erected in position and securing runners with holdfasts and brackets including taking down existing unserviceable, broken, rusted collapsible steel gates complete all as specified and directed by the Engineer-in-Charge.

M&L for cutting holes in stone walls built in cement mortar for inserting hold fasts and making good dismantled portion in cement mortar (1:3) or cement concrete (1:2:4) type B1 as required, depth of embedded portion of hold fasts or lugs exceeding one brick but not exceeding two bricks from the face of the jamb into the wall complete all as specified and directed by the Engineer-in-Charge.

M&L for running welding in repairs, thickness of metal to be welded not exceeding 6mm complete all as specified and directed.

All as per above No 20 above, but thickenss of metal to be welded exceeding 6 mm but not exceeding 9mm.

M&L for 4 to 5 mm thick high density EPU flooring in patch work/ repair work including priming, screed topping antistatic type including making good to old flooring surface of EPU flooring before application of low viscous epoxy primer having resin and hardener in equal volumes complete all as per manufacturer's instructions and directions.

M&L for preparation of new or previously untreated steel surfaces of any description, over 10 cm in 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.

M&L for preparation of old painted steel surfaces of any description, over 10 cm in width or girth, not otherwise described and applying one coat of synthetic enamel paint complete all as specified and directed.

Dismantling structural steel work including doors, gates but excluding framed truss etc. complete all as specified and as directed by Engineer-in-Charge.

S&F rolled milld steel of grade Fe-290 (Grade E-165) in framed work as in doors or gates of angle or other section with gussets plates, rails braces, etc. complete, drilled for fixing of steel sheeting or other covering. Doors, etc. to be prepared for hanging or sliding with and including either hooks and hinges or steel hanging door fittings (exclusive of steel sheeting or other covering, running rails and guides) and hanging, also fastening and fixing complete all as specified and directed.

S&F rolled milld steel of grade Fe-290 (Grade E-165) in plates (plain or chequered) channels, square cut or notched (ordinary and counter sunk) forming holes, with riveted, bolted or welded attachment complete all as specified and directed.

Demolition of cement concrete in ground floors and pavings not exceeding 15 cm thickness (below/ above ground level) including floor finishes complete all as specified and directed by the Engineer-in-Charge.

M&L for precast cement concrete (1:2:4) type B1 (using 20mm graded stone aggregates) kerb solid blocks, exc. 10 cm in width and setting in cement mortar (1:4), complete all as specified and directed.

M&L for 100mm thick PCC (1:4:8) type D2 (using 40mm graded stone aggregates) as in sub base floor/ floors and paving etc. complete all as specified and directed.

S&F rubber moulded machine pressed PCC interlocking paver block conforming to IS : 15658-2006 of size 80mm thickness, M-40 Grade with grey cement and pigment, laid dry over 25mm thick screed river washed sand cushion as in floor, shape and colour as directed by Engr-in-Charge.

S&F rolled mild steel in roof trusses (framed), trussed, purlins, crane gantries, rails and fastenings and heavy bracket framing (beam, tee, angle, channel or flat sections) including distance pieces, cleats etc. conforming to Fe-410-W (Gde-E-250) Quality-B complete all as specified and directed.

Dismantling of old unserviceable, rusted, broken (corrugated/ semi corrugated, etc.) CGI/ AC/ Fibre glass sheets in ridge and roof coverings complete all as specified and directed.

S&F pre-painted galvalume GI based corrugated steel sheet 0.50mm thick of any colour having tensile strength of 550 Mpa as in roof covering/ cladding to wall, fixed with self tapping screws complete all as specified and as directed by Engineer-in-Charge.

M&L for racking out of old existing sealant compound and back up rod of the existing joints by special tools like cutting blades/ machines, widening of joints by 2 mm by using joint cutting blades of appropriate size straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the backup rod and pouring the sealant. Thereafter filled with closed cell, medium density, cross linked polyethylene foam backup rod of 8 mm dia for complete length of the joint, over it to be filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-141875- 2003 with minimum movement accommodation factor (MAF) of (+/-) 30% complete all as specified and as directed.

M&L for racking out of old existing sealant compound and back up rod of the existing joints by special tools like cutting blades/ machines, widening of joints by 2 mm by using joint cutting blades of appropriate size straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before pouring the sealant. Thereafter filled with closed cell medium density, cross linked polyethylene foam backup rod of 12 mm dia for complete length of the joint, over it to be filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor (MAF) of (+/-) 30% complete all as specified and as directed.

M&L for racking out of old existing sealant compound, back up rod and filler board of the existing joints by special tools like racker/ cutting blades/ machines, widening of joints by 2 mm by using joint cutting blades of appropriate size, straight and smooth edges. Joint cleaned thoroughly with application of compressed air. Joint shall be made dry, vacuum cleaned and free of dirt, oil, vegetation and other debris. Application of two coats of primer with thin brush by forward and backward movement at an interval of 30 minutes before placing the filler board and pouring the sealant. Thereafter filled with pre-molded 25 mm thick compressible polyethylene closed cell type filler board as specified, over it filled with closed cell medium density, cross linked polyethylene foam backup rod of 30 mm dia for complete length of the joint. Finally filled with polyurethane joint sealant meeting the requirements mentioned in BS-5212, BS 4254 and EN-141875-2003 with minimum movement accommodation factor MAF of (+/-) 30% complete all as specified and as directed.

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