Custom Metalwork near you

Part H1 of Volume Two sets out how structural performance is satisfied for a Class 1 or Class 10 building. For steel framing it points to AS 4100 and AS/NZS 4600, and it allows structural steel sections to comply with either of those standards for strength and deflection. Anything that carries load in your house — a replacement beam over a removed wall, a post taking a roof, a stair stringer — sits inside that framework and needs an engineer's design before a fabricator cuts anything.

Wind is treated separately and much more seriously in the north. Part H1 requires metal roof assemblies in cyclonic regions to be capable of remaining in position under fatigue loading sequences set out in its table, with reference to AS/NZS 1170.2. That is a fatigue requirement, not a strength one: it is about repeated loading and unloading over hours, which is what destroys fixings and connections in a cyclone. A carport or patio frame in Cairns is a different engineering problem to the same frame in Bendigo.

Ask the fabricator early who is providing the structural design and who is certifying the connections. A workshop that welds to a drawing supplied by an engineer is a different proposition to one that designs as it goes.

The two things that shorten the life of outdoor metalwork are salt and standing water. Near the coast, rinsing coated and stainless surfaces with fresh water on the schedule the coating supplier recommends is genuinely effective, and the parts that never get rained on — under an eave, behind a post, the sheltered face of a gate — are the parts that corrode first because nothing ever washes them.

Detailing matters more than maintenance in the long run. Sections that trap water, unsealed ends of hollow sections, and joints that hold moisture against a coating will fail whatever you do afterwards. When you are reviewing a drawing, look for drainage: where does water go when it lands on this, and can it get out.

Inspect fixings annually on anything that moves or carries load — gates, handrails, carport bracing — and treat a rust bloom at a bolt as a structural question rather than a cosmetic one.

Custom metalwork is a supply of goods and services, so the Australian Consumer Law applies. The ACCC states that goods must be of acceptable quality, meaning safe, durable and free from defects, and must be fit for the particular purpose stated where you specified your intended use or relied on the business's advice. Services must be carried out with an acceptable level of care and skill and supplied within a reasonable time where no time frame was agreed.

Where the work forms part of building work, state building licensing may apply on top of that, and the threshold and the licence classes differ by state. Settle in writing who is responsible for the structural design, what coating system is being applied and to what specification, and what happens if the item does not fit on delivery. A quote that names the grade, the coating and the engineer is a quote you can hold someone to.