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STANDARD CONSTRUCTION
RECTANGULAR BOLTED"STRIPSEAL" TANKS
General Description: Southern Cross bolted "Stripseal" water tanks are fully pre-fabricated and are designed for easy erection on site without the need for special tools or equipment. All components are easily handled. No metal cutting or drilling is required on site, except for pipe work connections and roof cladding. Sealing gaskets are pre-punched with accurately spaced holes, ensuring a tight leak-proof seal. A comprehensive installation manual and an internal ladder are supplied as standard. Design: These Southern Cross tanks have been designed to comply with the relevant Australian Standards.
Construction: The standard construction of these tanks is as follows: Bottom: All bottoms are made of 1 .6mm thick galvanised steel sheet. All joints are lapped and secured every 60mm with 10mm diameter mild steel bolts, with a flat washer under the nut. A watertight seal is ensured by using rubber sealing strips between the lapped sheets.
Sides: Tank sides are constructed with a structural steel angle framework, to which the galvanised steel sheeting is bolted. All joints are lapped and bolted to the frame every 60mm using 10mm diameter galvanised steel bolts. A watertight seal is ensured at all joints by using rubber sealing strips between the lapped sheets and between the bottomangle and sheet bottom. The galvanised sheeting is 1 .6mm thick on all tanks.
Tops: All tops are flat and consist of a galvanised steel framework covered with steel roof sheeting. The framework is made from cold-rolled galvanised high tensile zed-section purlins. On smaller sizes these span the tank in single lengths and are attached to the top ring of the tank with brackets. On larger diameter tanks the main beams are supported by steel pipe posts, with zed-section purlins bolted between the beams and the top angle of the tank with brackets. On larger tanks the main beams are supported by steel pipe posts, with zed-section purlins bolted between the beams and the top angle of the tank. Trimdek Hi-Ten steel decking is secured to the purlins with self-drilling fasteners. The decking is also bolted to the tank with 10mm diameter bolts. All the tops (except for light-weight) are designed to resist wind loadings to AS 1170 Pt2.
Sealing Strips: Wedges are moulded from Styrene Butadiene Rubber. Sealing Strips are made from Ethylene Propylene Rubber with pre-punched bolt holes.
Fasteners: All fasteners are commercial hot dipped galvanised steel.
(I) Bottom: Bottom sheets are bolted every 60mm using 10mm diameter steel bolts with a flat washer under the nut.
(ii) Sides: 10mm diameter steel bolts are used every 60mm.
(iii) Flat Tops: Steel decking is attached to purlins with self-drilling fasteners. Decking is bolted to tank top angle with l0mm diameter steel bolts.
Ladders: Ladders supplied are welded rung type with 50mm x l0mm stiles and 20mm diameter rungs. An internal safety ladder is supplied as standard with every tank and extended hand rails can be supplied as an option. Outside ladders can be supplied with extended hand rails, platforms and safety cages, as optional items. Ladders conform to AS 1657
Site Considerations | Foundations | Warranty
