1. Why is Hi-Tensile Steel so important in cold-formed sheds?
Hi-Tensile Steel is Heat Treated, Carbon Dense & Much Stronger than Normal Steel (called Mild Steel). You need this additional strength to take advantage of light weight structural steel.
2. How do I know if it is Hi-Tensile?
G450, G500 & G550 are Hi-Tensile Grades defined by The Australian Standards®. G means Grade. The number is the certified strength in megapascals or MPa.
Make sure that the certified grade is stipulated in writing in your quote for the columns, rafters, purlins, girts and cladding.
3. What is Deflection?
Deflection is the amount of bend or sag in the middle of a rafter or purlin.
The Australian Standards® limit deflection, so bigger spans require stronger steel.
4. Why is Deflection important?
Deflection tells you whether the structural steel is strong enough for the span and load.
Deflection must be calculated and be standards compliant before it can be specified or used.
It is illegal to sell or certify a shed unless the structural steel is deflection compliant as per AS/NZS 1170.0.
5. Are Top Hat purlins and girts ok?
Absolutely. Top Hat is light weight, easy to install and perfect for smaller bays. Use the standaloneTop Hat Span Test™
to verify suitability for your bay size and compliance with The Australian Standards®
6. The Shed Company says that the Steel Grade & Deflection details will be in the Engineering?
The Steel Grade & Deflection should be in the engineering. The information should also be readily available for the product and displayed in the technical details of the quote. We strongly recommend you get the information in writing prior to purchasing.
7. Is ShedSafe® important?
No. Test every quote. Always examine the grade of steel used and its suitability for purpose. Marketing doesn't hold a shed together, steel does.
8. Why do the prices vary so much for the same size shed?
We don't test pricing, only the grade of steel used and its suitability for purpose.