tender for providing weather protection shade over rrs transformer and dg set for maintenance purpose- 1 hiring structural consultant:the scope includes the structural design, detailing, and drawings for a mild steel (ms) roof shed to cover the dg sets and transformers installed in the rrs building premises. the shed shall be designed to protect equipment from rain, wind, sun exposure, and corrosion while ensuring adequate ventilation and accessibility for maintenance deliverables from structural consultant required are ga drawings & detailed fabrication drawings,structural design calculations,load calculation sheets,foundation drawings, stability certification after erection 2 providing and fixing precoated galvanised iron profile sheets (size, shape and corrugation as approved by engineer-in-charge) of total coated thickness 0.50 mm (base metal of minimum 0.45 mm thickness with total coating thickness of 0.05mm) with zinc coating 120 grams per sqm as per is: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by engineer-in-charge. the sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55 mm) with epdm seal, of total complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required. 3 gutter (600 mm over all girth)