Alu Geodesic Dome Roofs

Alu Geodesic Dome Roofs

Maxwell Aluminium Geodesic Dome Roofs for storage tanks are advanced clear-span structures specifically designed for each tank according to API 650 Appendix G guidelines.

Reach out to us to discuss your requirements for corrosion-resistant tank dome roofs. Our knowledgeable sales team can help you find the best options tailored to your needs.

Addressing the increasing burden of environmental regulations in a cost-effective manner is crucial for operators of petroleum and chemical storage tank facilities. Maxwell Aluminium Geodesic Dome Roofs are engineered to control hazardous vapour emissions and prevent water from entering the storage tanks.

By achieving this, our aluminium dome roofs enhance environmental safety, protect stored products, and reduce costs associated with the treatment of contaminated bottom water. Suitable for both new constructions and retrofit projects, Maxwell Aluminium Geodesic Dome Roofs are corrosion-resistant, lightweight, and durable, making them an economical choice for each Above Ground Storage Tank (AST). They can be shipped globally and installed swiftly, usually with no interruption to tank operations.

Advantages of the Maxwell Aluminium Geodesic Dome Roof

• Excellent emission control, reducing bad smells and other environmental nuisances to a minimum;
• Fire hazards can be minimized to nearly 0% due to the Faraday cage effect, ensuring high operational reliability;
• No need for supporting roof columns, eliminating the risk of corrosion under the column's landing area, thus extending the tank maintenance period and lowering future maintenance costs;
• Despite the seemingly higher initial cost, aluminium dome roofs generally offer a better total cost of ownership due to reduced maintenance costs, such as coating expenses.

Maxwell Aluminium Geodesic Dome Roof Structure

The Maxwell Aluminium Geodesic Dome Roof is a self-supporting, clear-span structure. Aluminium alloys, particularly from the 6000 series, are used for their lightness, strength, and excellent corrosion resistance. These properties allow the aluminium geodesic dome roof to be utilized for tanks storing most products. The roof system comprises triangular, lightweight extruded profiles that handle both compressive and tensile forces to resist various load cases.

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The configuration transmits loads laterally to the integral tension ring and through sliding or fixed supports to the tank shell and foundation. The framework is covered with aluminium sheeting from the 3000 or 5000 series, H16 tempered. Thanks to the corrosion resistance of aluminium alloys, the roof does not require painting and is maintenance-free for the tank's lifetime.

The Maxwell Aluminium Geodesic Dome Roof is designed to be fully bolted, ensuring no on-site welding is needed for assembly.

Additionally, these roofs fully comply with API 650 Appendix G requirements. Components are made from aluminium or stainless steel, with no galvanized, painted, or plated steel used above the mounting bracket base plates. Dissimilar materials in the supporting structure are isolated from the aluminium dome with a compatible elastomeric gasket.

The structure is designed to be watertight under all load conditions, and the flat surface design prevents water pooling at joints using an integrated hub cover.

The aluminium closure panels are attached continuously along their edges to the structural members via clamping bars, which engage the panels in an interlocking joint. These clamping bars also secure an elastomeric weather seal gasket, forming a continuous watertight seal along the panel edges and protecting the gasket from UV exposure.

Additional Features

Essentially, any equipment typically found on conventional steel dome or cone roof tanks can be fitted on the Maxwell Aluminium Geodesic Dome Roof without significant modification. Our standard design often includes features such as free vented design with sliding supports and bird screen, gauge hatch assembly, access/manway assembly, center free vent assembly, and skylight assembly.

The Maxwell Aluminium Geodesic Dome Roof is typically designed with a maximum radius equal to 1.2 times the tank diameter and a minimum radius of 0.7 times the tank diameter, equating to a dome height to tank diameter ratio of about 1:6.

Maxwell Aluminium Geodesic Dome Roof Assembly

The Maxwell Aluminium Geodesic Dome Roofs can be assembled inside the tank and lifted into its final position using a pulley block system, crane, or external floating roof floatation lift.

When using the jacking method to erect the tank, the dome roof is fitted on the top course and jacked up along with the shell.

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