Tender For “Fire Proofing Work” I.E. Supplying And Applying Vermiculite Cementitious Fire Proof Coating On Structural Steel On Sub-Contract Basis” In Connection With 1.0 FIRE PROOFING OF STRUCTURAL 2.0 Fireproofing with Vermiculite: VERMICULITE CEMENTITIOUS FIRE PROOF COATING ON STRUCTURAL STEEL(minimum thickness of 38 mm depending on steel section size as stipulated in standard drawings(attached in bidding document) at any level/height. Supplying and applying Fire proof coating (For 2 hours fire rating) with light weight cementitious material with exfoliated vermiculite along with along with all associated works like supply and fixing of hard drawn steel wire fabric of 2.5mm dia of 50x50mm mesh conforming to IS-1566 secured by 18 SWG galvanized tie wire to studs or nuts, supplying and welding of suitable size on the structural steel surface, supply & fixing of Spacers (shall be 5 mm thick) with nuts of M16 bolts, ensuring suitable clearance from the face of the structure member, ensuring lapping of at least 75mm for the mesh and tying securely together, mixing of vermiculite material and applying pneumatically, ensuring proper thickness of fire proof coating, SQM 7430.00 3,085.00 2,29,21,550.00 3.0 using shooting strips for proper thickness & true line and also to permit escape of rebound, screeding of final surface, curing for 7 days, all scaffolding jobs, arranging spray guns, proper chamfering,/rounding-off(about 20mm) of all outside edges of fireproofing, supplying and application of suitable primer and Poly-urathane paint (minimum DFT of PU paint shall be 50 Microns) on the finished surface, sealing of the junction between fireproofing and bare steel against ingress of water with minimum 10mm thick bituminous mastic flashing, complying with all the safety requirements, arranging all materials, scaffolding arrangements, tools & tackles, safety gadgets, labour etc. all complete as per the specification and directions of the Engineer-In-charge. Each face shall be checked for thickness at every 4m and at least once per structural member. The job shall also include cleaning (including wire brush if required) the surface to be fire proofed clear of all dirt/rust/foreign materials etc. - - 4.0 covering/protecting all the nearby pipes/equipment etc from spatter/falling material with tarpaulin or GI sheets of other suitable shielding materials as per the directions of Engineerin-charge. The steel surfaces to be fire proofed shall be blasted and applied Primer Coating and Protective coating as per the specifications(Payment for blasting, supply & application of Primer and Protective Paint shall be made separately on “MT” basis under the Str.Steel Items).Vermiculite cementitious coating like Fendoloite/Pyrocrete or equivalent shall be used. Materials, equipment and method of application shall be in accordance with IS-9012 and IS-6433.The Fireproof coating shall be done only by skilled operators as approved by Engineer-in-charge. - - 5.0 Fireproofing with Concrete: Encasing of structural steel members with M-20 concrete at any level/height (minimum thickness of Encasing :65 mm):Supply and fixing of hard drawn steel wire fabric of 2.5mm dia of 50x50mm mesh conforming to IS-1566 on structural steel member and to be secured by 18 SWG galvanized tie wire to studs or nuts, supplying and welding of suitable size on the structural steel member, supply & fixing of Spacers (shall be 5 mm thick) with nuts of M16 bolts, ensuring clearance of not less than 20mm from the face of the member, ensuring lapping of at least 75mm for the mesh and tying securely together, supplying, mixing, transporting, placing, vibrating and consolidating concrete in the prefabricated and pre fixed formwork moulds up to the specified level, suitable shielding of all important frames/Electrical/Instrumentation accessories /opening prior to the concreting works as per the drawings and as directed by Engineer In charge. CUM 50.00 12,445.00 6,22,250.00 6.0 Formwork shall be of plywood and it shall be properly secured in place with sufficient supports,bracings etc.The concrete shall be poured for a free drop exceeding 1.2 meters and concrete shall be vibrated by poker vibrators or form vibrators.Formwork shall be removed after final setting of the concrete. An uniform appearance of surfaces shall be ensured for 7 days and all defects such as hony combing ,bulging,damage to edges shall be rectified by Contractor at his own cost.02 coats of Polyurethane paint (shade as approved by EIC) shall be provided over the encasing for a minimum total thickness of 50 Microns(DFT).The job shall also include cleaning (including with wire brush if required) the surface to be encased clear of all dirt/rust/foreign materials etc. covering/protecting all the nearby pipes/equipment etc from spatter/falling material with tarpaulin or GI sheets or other suitable shielding materials, arranging all tools tackles, scaffolding arrangements, compliance of safety requirements, poker vibrators or form vibrators, curing compounds, tools and tackles etc. all complete. The steel surfaces to be encased shall be blasted and provided with primer and protective painting layer and the finishing coat of PU paint shall not be applied (Payment towards blasting, primer coat and Protective layer shall be made separately on “MT” basis under the Structural Steel Items). Materials, Equipment and method of application of concrete for encasing shall be inaccordance with IS:456. Compressive strength of concrete mix should be >=30N/mm2 in 28 days. All outside edges of fireproofing shall be chamfered/rounded off by 20mm.The junction between fireproofing and bare steel shall be sealed against ingress of water, minimum 10mm thick bituminous mastic flashing. Each face shall be checked for thickness every 4 m and atleast one per member. 7.0 HARD DRAWN WIRE FABRIC REINFORCEMENT: Supplying and placing in position hard drawn wire fabric of 3mm dia 50x50 Mesh @ 2.22 kg/SQM as per IS: 1566 to be used as reinforcement for fire proofing, including straightening, cleaning, cutting, bending, binding different portions with contractors own 16 SWG black soft annealed wire, welding with spacer plates or lugs (to be supplied by the contractor at his own cost) in skirts/ on surface of structural steel members etc. complete, including cleaning of the surface and all labour and as per drawings/ sketches, specifications and directions of the Engineer-in-Charge. SQM 651.00 275.00 1,79,025.00 8.0 CHIPPING OF RCC/FIREPROOFING Dismantling of concrete / vermiculite or any other form of fire proofing as per drawings / as directed by Engineer-in charge without damaging the adjcent fireproofing including scaffolding, disposal of demolished / dismanlted material to the storage point as directed by Engineer-in - charge. The job is inclusive of all required labour, consumables, tools & tackles, machinery & equipments and transportation to the storage point as directed by the Engineer-inCharge. Any damage to adjacent fire proofing shall be rectified as directed by Engineer-incharge without any additional cost - - 9.0 Thickness upto 100mm CUM 5.00 2,565.00 12,825.00 10.0 Thickness above 100mm and upto 250mm CUM 5.00 2,850.00 14,250.00
