CA NO : CE (P) VIJAYAK/ /2012-13 Serial Page No : 01 ... - Bro.nic.in

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CA NO: CE (P) VIJAYAK/ /2012-13 Serial Page No : 65TENDER NO: CE (P) VIJAYAK/46/ 2011-2012(PARTICULAR SPECIFICATIONS CONTD…)2.2 DESIGN CRITERIA: The following criteria will be followed for the design of the shelters:(a) Seismic Co-efficient – As per Seismic Zone V.(b) Snow load - 1 meter standing on roof.(c) Wind load - Equivalent to wind speed of 55 mtrs/sec as per IS-875(d) Roof slope - 1:3.(e) External temperature - (-) 40 0 C to + 35 0 C.(f) Water absorption/Penetration – Nil.(g) Termite proofing -Termite proof.(h) Fire resistant - Fire retardant & should not emit toxic fumes.(j) Ease of construction - Shelter should be modular in design.(k) Design load - As per IS 875.2.3 DETAILS OF STRUCTURAL MEMBER2.3.1 The roof shall be laid over a framework of trusses; purlins and columns fixed using suitablefasteners like self drilling bolt or J-hooks with bitumen washers, nuts, bolts etc.2.3.2 The trusses will be made by using suitable size hollow steel tube/rolled section(as per drawing).The trusses are provided at a suitable distance (as shown in Drg) and shall be supported on trusscolumns made using rectangular hollow steel sections, fixed with each using MS end plates &suitable nut/bolts at top level.2.3.3 The purlins will be made using suitable size hollow steel tube/rolled sections provided on thetrusses at a max, pitch of 1.8 mtr or less and are fixed and flushed with the top level of trusses withthe help of MS end plates & nut/bolts.3. SPECIFICATIONS FOR PREFABRICATED INSULATED PUF SHELTER INCLUDINGMATERIALS THEREOF3.1 PUF INSULATED PANEL3.1.1 Insulated sandwich panels to be used in wall & roof are one of the most important components ofpre-fabricated structures. It should strictly conform to the specifications listed hereunder.3.1.2 PUF panels to be supplied and used shall be Continuous Sandwich panels manufacturedthrough automatic plant with high quality finish and strength and properties conforming to thespecifications given at Clause 3.2 (e) below:-3.1.3 A certification of confirmation should be provided at the time of commencement of supply of thecontinuous sandwich panels (Wall & Roof both) conforming to the specification mentionedhereunder from the manufacturers of the same. The Manufacturer must have got evaluated thecontinuous Sandwich panels from Central Building Research Institute, Roorke (CBRI) for varioustests as under:-.(i)(ii)(iii)(iv)(v)(vi)Continuous Sandwich panels must be Fire Retardant.Physico-Mechanical Properties of Continuous Sandwich Panels.Typical Properties of Continuous Sandwich Panels.Various Impact Tests conducted on Continuous Sandwich Panels.Deflection in Continuous Sandwich Panels before and after loading.Fire Tests on Continuous Sandwich Panels.3.1.4 The details of Cycanide and polyol liquid component used for process of poly urethane foam forpanel should be accompanied with manufacturer test certificate indicating batch number, date ofmanufacture and expiry date.3.1.5 Before commencement of supply/erection of continuous sandwich panels a sample of full CrossSection of Wall Panel (size 1ft x 1mt) and a sample of full Cross Section of roof panel (size 1ft x1mt) be provided along with all related test reports, relevant specifications, Fire retardant Testreports /certificates.Signature of ContractorDated : _________________2012For Accepting Officer
CA NO: CE (P) VIJAYAK/ /2012-13 Serial Page No :66TENDER NO: CE (P) VIJAYAK/46/ 2011-2012(PARTICULAR SPECIFICATIONS CONTD…)3.1.6 Every supply of continuous sandwich panel (Wall and Roof) should accompany with the originalinvoice of the manufacturing company along with original EXCISE GATE PASS for verifying thepayment of central excise for confirmation of original supply.3.1.7 Pre-inspection of the sandwich panels (Wall and Roof) at the factory site of the manufacturer willbe carried out by a Board Of Officers to be detailed by Commander Contract before delivery of theconsignment for scrutinizing the quality of these sandwich panels. The board of officers will verifythe following aspects:-(i)(ii)(iii)(iv)(v)Whether the sandwich panel is continuous or not.Thickness of Panel for wall panel.Thickness of Panel for Roof panel.Density of PUF Insulation.Verification of Original Certificates for the above seven properties / specifications.3.2. Wall Panels (Internal/External):- All walls shall be made of inner white colour coated GI metalskin PUF panels. The thickness of PUF panels shall be 60 mm. The PUF insulation material in thepanel shall have fire retarding and self extinguishing properties as per international standard.There should not be any gap between PUF wall and roof and this should be done with suitableflushing of all joints.(a)(b)(c)All material required for the manufacture of shelter shall be new and shall comply withrelevant Bureau of Indian Standard Specification.The PUF panels are to be manufactured using high pressure dispensing machine ofrequired capacity to inject specified amount of PUF chemical into the cavity of a full panelin one shot not exceeding 25 sec duration. This is to ensure that the liquid PUF mixture issprayed into the cavity before the foaming reaction starts so that the insulation core of thepanel is formed in one piece and provides desired structural and physical properties. Thebulk density of insulation panel should be 40 Kg ±2Kg/Cum and the dispensing machineryshould be kept with a PLC controlled panel for monitoring and controlling the injection rateto assure specified uniform density requirements. The total thickness of the finishedcomposite panel should be 60 mm. The tolerance in the panel can only be on the plus side.The outer colour coated GI skin (RAL-1001) of the panels should be 0.55 mm thick TCT(Total coated thickness) with 50 micron thick PVC guard film on the finished surfaced onlyfor protection against scratches during handling and galvanization as per GR-120 IS-277.(d) The pre coated GI sheet skin should have min coating of 4.5 micron epoxy primer and 25micron polyester top coat on the finished surface and 7-8 micron Primer Alkyd Backer onbackside which is bounded to the polyurethane foam. The pre coated GI sheet shouldconform to IS 14246-1995 with manufacturer test certificates conforming to specification.(e)The PUF insulated core of these composite panels should have the following properties:-(i) Density : 40 kg/cum (± 2 kg/cum)(ii) Compressive strength at 10% deformation: 2.10kg/cm2(iii) Tensile Strength : 4.0 kg/cm2(iv) Bending Strength : 4.2 kg/cm2(v) Adhesion Strength : 3. 0 kg/cm2(vi) Dimensional Stability (48 Hours)(aa) (-) 25 degree C : 0.1%(ab) +38 degree C & 90% RH : 0.1%(ac) +100 degree C : 0.4%Signature of ContractorDated : _________________2012For Accepting Officer
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CA NO : CE (P) VIJAYAK/ /2012-13 Serial Page No : 01 ... - Bro.nic.in

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