tender for fabrication and erection of weather shed for dg set at byculla fire brigade officer quarter- 1 providing, detailing, fabricating and fixing at desired location using hot rolled sections and ms plates of grade fe 250 as per specifications and approved fabrication drawings (which are to be prepared by contractor and got approved from engineer), transporting to site and erecting structural steel members for all heights & at all levels including provision of necessary erection bolts, fixing bolts, nuts, washers, cleats, stiffeners, gussets, base plate, and all necessary fixtures and operations like preheating as per specifications, straightening, bending, cutting, drilling, grinding, machining if specified, welding, grinding and removing the welding burr and preparing surface for painting with wire brush cleaning and applying two coats of epoxy red oxide zinc phosphate primer of 30 microns each and two coats of epoxy corrosion resistant enamel paint of 30 microns after fabrication including touching up with spray painting after erection etc complete as directed by engineer in charge. (the qty. for this item shall be measured for gusset plates, base plates, bolts in m.t.) 2 colour coated galvalume/zincalume sheets for cladding 3 providing and laying in position plain cement concrete of specified grade cement with trap /granite /quartzite /gneiss metal mixing in concrete mixer including bailing out water, compacting, finishing surface, curing and including the cost of centering and shuttering at all level :nominal mix of 1:1.5:3 (1 cement opc: 1.5 coarse sand : 3 graded stone aggregate 20 mm nominal size)