tender for special repair to bldg no. p-75 at zone-8 at solmara cantt under ge (n) tezpur-- 1 taking down chowkats and shutters (without taking off shutters from the frame) n.exc 1.5 sqm each, complete in all respect as specified and directed. 2 taking down chowkats and shutters (without taking off shutters from the frame) exc 1.5 sqm but not exc 4sqm each complete in all respect as specified and directed. 3 s&f coloured 0.50 mm thick pre-painted galvalume aluminium zinc coating gi based trapezoid profile steel sheet having tensile strenght of 550 mpa as in roof covering/ cladding to wall, fixed with self tapping screws with bitumen washer to truss members of any material, including taking down existing sheet complete all as specified and directed.