Providing and Fixing Tin Sheet Roofing for New Immunodeficient Animal Research Facility at ACTREC

Preparing the surface of the terrace slab to install base plates of steel columns including removing the brick bat coba, water proofing membrane, I. P. S. , and carting away the debris

Water proofing the portion around the base plates including covering the base plates and bolt shafts with cement :sand mortar and brick bat coba as per the specification laid down in the tender.

Structural steel work riveted, bolted or welded in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete.

Steel work in built up tubular (round, square or rectangular hollow tubes etc.) trusses etc., including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer, including welding and bolted with special shaped washers etc. complete.Hot finished welded type tubes.

Painting with synthetic enamel paint of approved brand and manufacture to give an even shade : Two or more coats on new work

Providing and fixing precoated galvanised iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-charge) 0.50 mm (+ 0.05 %) total coated thickness with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineerin- charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required.

Providing and fixing precoated galvanised steel sheet roofing accessories 0.50 mm (+0.05 %) total coated thickness, Zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns using self drilling/ self tapping screws complete :

Ridges plain (500 - 600mm)

Gutter (600 mm over all girth)

Providing and fixing P.V.C. Rainwater pipes of mentioned outer diameter and having wall thickness of 2.2 to 2.7mm confirming to I.S.13592-1992 including proper rain water receiving recess with P.V.C. plug, bend, necessary fittings, such as, offsets, shoes, inluding fixing the pipe on wall using approved wooden cleats projecting 25mm to 40mm from face of wall afixing with clips of approved quality and number, filing the joint using rubber gasket with solvent cement and properly resting the shoe of pipes on C.C. or masonry blocks, including necessary scaffolding . All the P.V.C. fittings and additional 2 piece socket clips shall be got approved from engineer incharge etc. complete.-

110 mm Dia

Supplying, drilling / cleaning hole and fixing of chemical anchor fastners of 16mm dia embedded upto 150 mm in concrete as shown in drawing for fixing of base plate as per the directions of Engineeer Incharge including all the required preparing surface by demolishing water proofing, RCC surface if any .

Providing and laying in position cement concrete of specified grade excluding the cost of centering and shuttering - 1:1.5:3 (1 Cement: 1.5 coarse sand(zone-III) including manufactured sand derived from Recycled concrete aggregate (RCA) up to 25% : 3 graded stone aggregate 20 mm nominal size incuding Recycled Concrete Aggregate (RCA) up to 25%).

Design, analysis, and certification of structural stability for the proposed tin sheet roofing system should be submitted by the angecy.