Forest Department Tender

Providing,Installation,testing and commissioning of cieling fan . Size of Bajaj, Orient, Khaitan, Usha or Polar brand and manufacturers.

Carriage of materials from source to site of work by M.T. Sand av. Distance 8 KM

TECHNICAL SPECIFICATIONS FOR PRE-FAB STRUCTURE MADE UP OF STEEL AND PUF PANELLS IN WALL(Two Walls 10.0 ft and 10.0 ft with roof =10.0x10.0 ft) Pre-Fabricated shelter made up of steel structure and PUF panels in wall and technical specifications given below. The main and partition walls will be made up of 60mm thick PUF insulated panels. The false ceiling will be provided with PUF insulated panels as specified below. Roof covering will be provided with 0.63 mm thick colour coated profile sheets.With one Door 3x7 and vent 2x2 c) Columns. The main columns will be made out of R H Steel section of size 122x61x3.60 mm conforming to IS 4923:1997 MS base plate of size 250x250x8mm and top plate of size 200x150x8mm will be welded to the columns. Verandah columns will be made out of RH steel section 96x48x4mm thick with MS base plate of size 200 mm x200mmx8mm and top plate of size 200x150x8mm. all top and base plates will be pre-drilled with 4 Nos. 18mm dia holes. Base plates will be provided with 4 Nos 16mm dia 450 mm long holding down bolts each, while top plates will be provided with 4 Nos 16 mm dia normal bolts. d) Truss. The principal rafter and the bottom chord will be fabricated out of RH steel sections of size 96x48x4mm with 1:2 slope. All other strut members will be fabricated out of RH Steel sections of size 66x33x2.90mm. e) Purlins. The purlins will be fabricated out of RH steel sections of size 96x48x4 mm with 6mm thick cleats welded at both the ends. f) The roof will be provided with 0.50mm thick colour coated steel profile sheets. Sheet covering will be fixed with using hot dip zinc coated self drilling hexagonal washer head fasteners. Ridge shall be covered by 0.63mm thick colour coated steel sheet. The sheets shall be laid with minimum end and side lap of 150mm. g) Sunshades. Suitable sunshades made out of colour coated sheet reinforced with angle iron frame will be provided to all external windows and doors. The minimum projection for the sunshades will be 450 mm and 300mm wider than the width of the opening. Wall Panels. a) The main and partition walls will be made up of 60 mm thick wall Panels of make Llod panel system /Modern Panels/Jindal Mectecnol/PSL Engineering. The Panels will be made of 0.63mm thick hot dipped galvanized steel sheets on both sides with 60mm thick layer of rigid CFC free close cell polyurethane foam (Density 40 Kg+2 Kg/Cum) insulation. The wall panels will be provided with tongue and groove joint and will be with cam lock systems for interlocking. All materials required for the manufacture of shelter will be new and shall comply with relevant Bureau of Indian Standard Specification. Base channel of size 30x65x1.25mm thick will be provided for walls. b) The PUF insulation material in the panel will have fire retarding and self extinguishing properties as per any international standard B2 DIN 4102 Part-I/BS-4735 Self Ext. c) GI Metal Skin PUF Panels. (i )Thickness of skin-0.63mm thick hot dipped galvanized steel sheets on inner and outer side with 50-micron thick PVC guard film on the finished surface only for protection against scratches during handling and transportation. Base metal of GI Skin CRCA as per IS-513, Galvanized as per 120, SI-277. (ii)The panels will be insulated with PUF Foam (Density 40 Kg + 2 Kg/cum). (iii) These panels are to be manufactured using high pressure dispensing machine of required capacity to inject specified amount of PUF chemical into the cavity of full panel in one shot not exceeding 25 sec duration. This is to ensure that the liquid PUF mixture is sprayed into the cavity before the foaming reaction starts so that the insulation core of the panel is formed in one piece and provides desired structural and physical properties. The bulk density of insulation should be 40 Kg/Cum and the impending machinery should be equipped with a PLC controlled panel for monitoring and controlling the injection rate to assure specified uniform density requirements. (d) The pre coated GI sheet should have minimum coating of 4-5 micron epoxy primer and 25 micron polyester top coat on the finished surface and 7-8 micron primer alkyd backer on backside, which is bounded to the polyurethane foam. The pre coated GI sheet should conform to IS-14246-1995 with manufacturer test certificates conforming above specification. (e) The PUF insulated core of these composite panels will have the following properties:- (i) Density=40+ 2 Kg per cum. (ii) Compressive Strength at 10% deformation =2.10 Kg/Cm2. (iii) Tensile Strength =3.7 Kg/Cm2 (iv) Bending Strength =4.0 Kg/Cm2 (v) Adhesion Strength = 2.90 Kg/Cm2 (vi) Dimensional Stability (48 hours) (aa) 25 C =0.10% (ab) +38 C & 90% RH =0.10% (ac) + 100C =0.40%