bids are invited for civil1 - dismantling steel work in single sections including dismembering and stacking within 50 metres lead angle, tees and flats iron work complete all as specified and directed. , civil2 - dismantling g s sheetroofing including ridges, hips, valleys and gutters etc and stacking the material within 50metres leadcomplete all as specified and directed. , civil3 - providing and fixing precoated galvanised steel sheet roofing sccessoriesgutter (600 mm over all girth) 0.50mm (+0.05%) total coated thickness, zinc coating 120 grams per sqm as per is : 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both sideof sheet and polyeester top coat 15-18 microns using selfdrilling/self tappingscrrews complete all as specified and directed. , civil4 - providing and fixing 15 cm wide, 45 cm overall semi-circular plain0.63mm thick with zinc coating not less than 275 gm/m2 gs sheet gutter with iron brackets 40x3mm size bolts, nuts and washers etc, including making necessary connections with rain water pipes complete all as specified anddirected. , civil5 - providing and fixing on wall face unplasticised rigid pvc 110mm diameter rain water pipes conforming to is : 13592 type a, including jointing with seal ring confirming to is : 5382 , leaving 10mm gap for thermal expansion, (i) single socketed pipes complete all as specified and directed. , civil6 - providing and fixing unplasticised-pvc pipe clips of approved design to unplasticised-pvc rain water pipes 110mm by means of 50x50x50mm hard wood plugs, screwed with ms screws of required length, including cutting brick work and fixing in cement mortar 1:4(1 cement : 4 coarse sand) and making good the wall etc complete all as specified and directed. , civil7 - providingand fixing on wall face unplasticed-pvc moulded fittings/accessories for unplasticised rigid pvc rain water pipes 110mm bend 87.5 /45.5 degree conforming to is:13592 type a, including jointing with seal ring conforming to is : 5382, leaving 10