repairing of acoustical items of jay hind auditorium ward no.-27, under rajpur-sonarpur municipality.-providing and fixing of false ceiling with powder coated exposed g.i. grid suspension system ( e-grid u-1520 or equivalent load carrying capacity with mid span deflection not exceeding 1 / 360 span with hanger spacing of 1200 mm c / c ) consisting of main runner 3600 mm long, cross tee 1200 mm / 600 mm long and wall angle. the wall angle shall be fixed on pvc dash fasteners on the perimeter of the wall by steel screws with distance 300mm c / c. the main runners to be placed @ 1200 mm. the cross tee 1200mm will be inserted in the pre-cut slots of main runner at a regular interval of 600 mm to form a modular grid of 1200mm x 600mm. additional cross tees of 600 mm shall be placed perpendicular to the cross tee 1200 mm long to finally form a grid of 600 mm x 600 mm. grid of module size 600 mm x 600 mm shall be supported by 6 mm dia g.i. wire from purlins / soffit. 15mm thick ow acoustic board ( mineral fiber acoustic ceiling tiles ) of approved patern and size 595mm x 595mm with nrc value > 0.65 should be placed in the grid module to form a false ceiling. all complete as per the drawing & directions of engineer-in-charge.in ground floor.a ) acoustic false ceiling ( with 15mm thick ow acoustic board and e-grid u-1520 ) . [ it-6.a, / pg-162 ] 2 making one set of scaffolding only for replacing glass panels, painting, uprooting plant and another repairing works of building and s&p works for external works only with 10 cm. dia bamboo as main posts at the rate of 1 metre centre to centre and 7.5 cm. dia bamboo ties @ 0.75 metre apart fitting and fixing with necessary coir, nails etc. as per direction of the engineer-inchargea ) 3.90 metre height [ it-3.a / pg-23 ] 3 making one set of scaffolding only for replacing glass panels, painting, uprooting plant and another repairing works of building and s&p works for external works only with 10 cm. dia bamboo as main posts at the rate of 1 metre centre to centre and 7.5 cm. dia bamboo ties @ 0.75 metre apart fitting and fixing with necessary coir, nails etc. as per direction of the engineer-inchargeb ) extra for additional 3.6 height or part thereof [ it-3.b / pg-23 ] 4 gst @ 18% 5 labour welfare cess @ 1% 6 total in figures ( including all taxes ) 7 quoted rate in figures ( including all taxes )