bids are invited for roof structure comprising of the fwg :- ( a ) truss of size 2400 mm with a slope of 30o and will be fabricated using ms square pipes of size 32 x 32 x 2 mm. each truss will have provisions for connecting it with 3 columns using ms plates of size 150 x 150 x 8 mm. the truss will also have 4 plates welded of size 100 x 50 x 8 mm for fixing purlins. all joints will be continuous by welded. all ms components will be of make tata / sail / hulas / paras / baba / isi equivalent only nos 02 ( b ) columns of size 2400 mm long using ms square pipe of size 40 x 40 x 2.6 mm with one top and bottom base plate of size 150 x 150 x 8 mm each and 4 nos of foundation bolt of size 12mm dia. 12 mm bolts will be provided with each column at the scale of 4 per column with nuts, washers and all accessories to connecting truss. all ms components will be of make tata / sail / hulas / paras / baba / isi equivalent only. nos 06 ( c ) long purlins of size 3660 mm using ms square pipe of size 32 x 32 x 2 mm with two gusset plates of size 100 x 50 x 8 mm each will be provided for joining two trusses. 12 mm bolts at the scale of four per purlin with washers and nuts will be provided for fixing the purlins with the truss. all ms components will be of make tata / sail / hulas / paras / baba / isi equivalent. nos 12 ( d ) short purlins of size 1200 mm using ms square pipe of size 32 x 32 x 2 mm with two gusset plates of size 100 x 50 x 8 mm each will be provided for joining two trusses. 12 mm bolts at the scale of four per purlin with washers and nuts will be provided for fixing the purlins with the truss. all ms components will be of make tata / sail / hulas / paras / baba / isi equivalent. nos 06 ( e ) prefab mild steel door of size 1200x2400mm, outer frame made out of isa 40x40x6mm and door shutter frame of isa 35x35x5mm and all stiffner isa 30x30x3mm, welded with 100mm thick ms butt hinges, 02 x ms sliding bolt size 250mm, one nos 200mm long ms tower bolt and two nos 200mm ms handle will also provided. make : tata / sail / hulas / baba / isi mark or equivalent ( note : door and frame shall be painted with two coats of synthetic enamel paint ( og colour ) over one coat of red oxide primer ) no 01 ( f ) prefab ms window of size 900 x 1170 mm having double leaves. the outer frame made of isa 40 x 40 x 6 mm having 04 nos hold fasts ( two on either side ) evenly spaced and welded, 200 mm long split at ends made of ms flat 40x6mm. inner shutter frame made out of isa 30 x30 x 3mm. 02 nos styles of ms tee section of size 20 x 20 x 20 mm to be provided to take ms black sheet of 1.6 mm thick. shutter to be connected to outer frame by means of 04 nos ms oxidized hinges 100 mm long, two on each side, evenly spaced and suitably welded to inner and outer frame for ease of opening. 4xms tower bolt ( 02 nos each ) from inside 150 mm. 2xms bow handle ( 01 nos each ) from inside 150mm. no 02 ( g ) foundation bolts 12 mm with nuts & washers nos 30 ( h ) pre-painted galvalume sheet ( camouflage pattern ) of size 2400 x 800 x 0.63 mm make :bhusan / tata / jsw / hulas / equivalent isi brand nos 20 ( j ) pre-painted galvalume sheet ( camouflage pattern ) of size 2100 x 800 x 0.63 mm make :bhusan / tata / jsw / hulas / equivalent isi brand nos 14 ( k ) pgi sheet ( camouflage pattern ) for shelter corner of size 3000 x 600 mm make :bhusan / tata / jsw / hulas / equivalent isi brand nos 04 ( l ) pgi sheet ( camouflage pattern ) for ridge of size 2400 x 600 mm make :bhusan / tata / jsw / hulas / equivalent isi brand nos 02 ( m ) l hooks 8mm bolts and bitumen washers nos 300 ( n ) self threaded screw1 ½” for fixing of roof sheet and wall sheet nos 600