Ateco - Aluminium Geodesic Dome Roof
The Ateco Aluminium Geodesic Dome Roof is an all bolted structure and no welding is required at site for its assembly and erection. It fully complies with the requirements of API 650 Appendix G. Being a self-supporting structure internal roof column supports are not required. The aluminium dome roof is now the design of choice for most tank operators and is frequently to be found on oil and refined storage tanks as well as potable and waste water tanks. Because of the corrosion resistance of aluminium alloys the Aluminium Dome Roof does not require painting – EVER, and can therefore be considered as maintenance free in this respect.
Aluminium (more specifically an aluminium alloy) is one of the world’s most commonly used metals. Its lightness coupled with its strength, and excellent corrosion resistance are the main reasons for it being used in the design of the aluminium geodesic dome Roof and this non corrosive property means that the aluminium geodesic dome roof can be used on tanks used to store most products.
The aluminium geodesic dome roof is a system of triangular, lightweight extruded profiles, normally from 6000 series, that act in compressive and tensile force to resist loading. The profiles are connected through node points and this configuration works together transmitting loads laterally to the integral tension ring and then through sliding supports to the tank shell and tank foundation. The framework is then covered with a minimum; usually from the 3000 or 5000 series, H16 Tempered 1.2 mm thick aluminium sheeting.
The applied loads on a geodesic dome roof and taken into consideration in the design consist of live, dead, wind, seismic, and gravitational, all of these must be withheld by the tank and the tank foundation therefore the geodesic dome is primarily a self-supporting structure and internal roof supports are not required.
Because of the corrosion resistance of aluminium alloys the aluminium geodesic dome roof does not require painting - EVER, and can therefore be considered as maintenance free in this respect for the entire lifetime of the tank.
The Ateco Aluminium Geodesic Dome Roof is an all bolted structure and no welding is required at site for its assembly and erection, it fully complies with the requirements of API 650 Appendix G.
We normally offer the following features in our standard design:
- Gauge Hatch Assembly
- Access/Manway Assembly
- Centre Free Vent Assembly
- Skylight Assembly
- Free vented design with Sliding Supports
- Bird Screen
Essentially any equipment that you have on a conventional steel tank roof can be fitted on the Ateco Aluminium Geodesic Dome Roof and without any significant modification to the equipment or the roof. It is normally designed with a maximum radius equal to 1.2 times the tank diameter and the minimum is 0.7 times the tank diameter, this equates to the ratio of dome height to tank diameter of about 1:6.
If specified the Ateco Aluminium Geodesic Dome Roof can be designed to support and an aluminium internal floating roof.
The Ateco Aluminium Geodesic Dome Roof can be assembled inside the tank and lifted into its final position with either a crane or a system of pulley blocks. If using the “jacking method” to erect the tank, the Ateco Aluminium Geodesic Dome Roof is fitted on the top course and jacked up with the shell.
To prepare our most competive quotation it is important that the correct information is sent to us; this should include the following:
- Nominal diameter of the tank
- Additional accessories
The Ateco Aluminium Geodesic Dome Roof is an excellent alternate roof for the bolted tanks (API 12 B) and, dependent upon the size requirements, Ateco can offer a completed bolted tank fitted with the Ateco Aluminium Geodesic Dome Roof.