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Steel buildings engineered for cyclone prone regions


Australia has seen it’s fair share of cyclones in recent years, and Cyclone Yasi is one that changed the shed industry forever. The absolute devastation it caused called for a review of the building standards in these areas were significantly increased. 

View our range of cyclone rated sheds.

A shed, no matter what size, can be a lethal weapon in a severe storm such as the one seen in Northern Queensland. It just isn’t worth saving a buck or two initially when your family’s life could potentially be at risk if another cyclone of the same magnitude should ever hit our coastal regions again. 

When you are purchasing a shed, garage or kit home that is to be built in a cyclone-prone region, you will need to make sure that it is engineered accordingly. This means you will pay more than a standard steel building. The reason for this is that certain materials will need to be upgraded to ensure your shed is extremely robust and capable of withstanding such fierce winds and pressure. 

A cyclonic steel building will see changes in a number of areas, they include (but are not limited to):

Co-efficiency of Pressure Internal (CPI)

Most of our standard range of buildings that are designed for non-cyclonic regions will require a CPI of -0.3. However, sheds, garages and kit homes engineered for cyclonic regions are designed with a CPI of +0.7. 

Wind Lock Roller Doors

For regions considered high wind regions, wind lock roller doors will need to be attached. These are a safety precaution as they act as a wall panel, which has the same strength as the overall shell – and significantly strengthens the structure, giving it more chance of surviving a high wind event. 

Screws for Cyclonic Regions

High tensile bolts and class 4 screws that have cyclonic adaptors are essential for cyclonic buildings; they strengthen the structural integrity of the building. 

Purlins and Girt

There will need to be a certain amount of overlap between the z-purlins to ensure the building is secure and strong. Additionally, purlins and girts should be strategically placed closer together on a cyclonic building, and are usually braced with mid bay sections in bay centres. 

These are only some of the elements that will need special attention when designing a building intended for a cyclonic region. For more information about buildings engineered for cyclonic regions, please speak with one of our knowledgeable sales representatives by calling 1800 601 579.

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