tender for providing and fixing of false ceiling work of administrative building at nhpc regional office chandigarh; 1 dismantling aluminium/ gypsum partitions, doors, windows, fixed glazing and false ceiling including disposal of unserviceable material and stacking of serviceable material within 50 meters lead as directed by engineer in-charge 2 providing and fixing false ceiling at all heights with integral densified calcium silicate reinforced with fibre and natural filler false ceiling tiles of size 595x595 mm of approved texture, design and patterns having nrc (noise reduction coefficient) of 0.50 (minimum) as per is 8225:1987, light reflectance of 85% (minimum). non-combustible as per bs:476 (part-4), fire performance as per bs:476 (part 6 &7), humidity resistance of 100%, thermal conductivity < 0.043 w/m k as per astm 518:1991, in true horizontal level suspended on inter-locking metal powder coated t-grid of hot dipped galvanised iron section of 0.40 mm thick on silhouette profile, rotary stitched double webbed white with 6 mm reveal profile (white/black),comprising of main-t runners of size 15x42 mm of length 3000 mm, cross - t of size 15x42 mm of length 1200 mm and secondary intermediate cross-t of size 15x42 mm of length 600 mm to form grid module of size 600 x 600 mm, suspended from ceiling using galvanised mild steel items (galvanizing @ 80 grams per sqm) i.e. 50 mm long, 8 mm outer diameter m-6 dash fasteners, 6 mm dia fully threaded hanger rod upto 1000 mm length and lshape level adjuster of size 85x25x2 mm. galvanised iron perimeter wall angle of size 22x19x0.40 mm of length 3000 mm to be fixed on periphery wall / partition with the help of plastic rawl plugs at 450 mm center to center and 40 mm long dry wall s.s screws. the work shall be carried out as per specifications, drawing and as per directions of the engineer-in-charge.: with 15 mm thick integral densified micro edge light weight calcium silicate false ceiling tiles 3 15 mm thick, light weight, integral densified micro look edged, false ceiling tiles of size 595x595 mm.