tender for work of dismantling , fabrication and installation of chimney installed at worli electric crematorium, 1 strengthening of 2nd shell with 50mmx10mm gussets inclusive of scafollding 2 dismantling of upper 3 shells of mild steel self supported chimney by means of crane 3 rearranging shells according to their thickness, such that 3rd shell becomes 5th, 4th shell becomes 3rd and 5th shell becomes 4th and descaling the 3 shells, repainting and reassembling them and reinstalling them on the 2nd shell on chimney with high tension nut bolts 4 work of supply and installation of 400mm dia main duct made out of 2 mm thick s.s 304 plate shall be connected with hood outlet, water scrubber unit, exhaust air blower, bypass arrangementof scrubber etc. the end flanges of ducting shall be 6 mm thick x 40 mm wide made out of s.s 304 material . the ducting shall be provided with s.s. 304 nuts, bolts, washer; asbestos rope etc. ducting shall be installed at site at suitable height with m.s. angle/ channel/ brackets etc. taking support of existing shed m.s. i beam/ support as required.