Provision of 8No. Motorised Portal Cabin Observation Post including insulation, roofing, etc. in Lagos (4No) and Ogun (4No) State awarded to Messrs. Serafina Nig. Ltd: Details :This is a structure with 300mm x 300mm x 5 mm black thick pipe Shoe plate. The walls are made of 2mm corrugated metal sheet screwed to 2mm black thick pipe. The panel to motorized cabin is made of 12mm thick veneer plywood cladding nailed to 50mm x 100mm hardwood at 600mm center to center. The roof trusses are made of mild steel angle iron and purlins in various sizes covered with 0.55mm approved oven baked coloured aluminium corrugated roofing sheets in single span lapped and fixed in accordance to manufacturers instructions. The doors are made of 900mm x 2100mm x 2mm corrugated Metal Panel door to screwed to 2mm black thick pipe, while the Windows are 900mm x 1200mm x 2mm corrugated metal. The floors are finished in 3000mm composite floor board and 25mm plank wood on 50mm x 100mm wood. The ceilings are finished with 6mm thick veneer plywood ceiling board fixed 25mm x 50mm noggins with all necessary accessories metal.