Whole house framer book11/20/2023 ![]() Thin steel sections are strengthened with folded profiles (for example, Z and C purlins, top-hat battens and C-studs, folded I-beams and others). Engineered steel solutions use a wide range of steel shaping options such as hot or cold rolling, bending or folding to gain maximum structural advantage from minimal steel thicknesses.Materials include engineered timber products such as plywood, particleboard, glue laminated timber (glulam and LGL), laminated veneer lumber (LVL), oriented strand board (OSB), and finger-jointed cladding or fascia. Engineered timber products use adhesives to bind strands, particles, fibres or layers of timber to form a stronger composite material.Steel or engineered timber framing can provide support for long spans and cantileversĮngineered timber and steel structural designs maximise structural capacity, while minimising material use: With the enormous variety of non-structural claddings, linings, and finishes available, lightweight framed construction can be used to create almost any desired architectural form or finish (for example, reconstituted hardwood panels and boards from forestry waste, fibre cement sheet, plywood, timber weatherboard, brick veneer, rendered external insulation systems, or composite metal panels). ![]() Lightweight framed homes can range in appearance from the traditional weatherboard bungalow to the ultra-modern metal-clad home. Lightweight framing also allows future adaptive changes to be made more readily to the building structure with minimal material impact and lower cost. The growing range of engineered solutions continues to extend design possibilities while reducing resource consumption. Lightweight framing in both timber and steel offers design freedom at a competitive cost. Some manufacturers combine both into the one structural product for maximum efficiency. It is possible to use both materials within the one building, selecting each for its most efficient application, such as timber wall frames and long span steel truss first floor joists. Steel framing requires different skill and tool sets. Timber frames are traditionally erected by carpenters who are skilled and tooled up to work with timber. Trade skills and availability are abundant. Lightweight framed construction is a common and relatively simple building system. Photo: Maeli Cooper Buildability, availability and cost Steel framing must be appropriately insulated or it will act as a thermal bridge, increasing the risk of condensation. Note that a steel frame does not remove the need for termite protection to the home. Steel production requires large amounts of energy, but steel is 100% recyclable. Typically, the frames have an extra polymer protective coating to minimise rust, which improves durability. Steel-framed construction began to be adopted in the 1940s and continues to be popular especially in areas of high termite risk.Timber is vulnerable to termite attack, and rot and mould from condensation are also becoming a threat as we seal our homes and increase insulation levels. Certification schemes for sustainability include Programme for the Endorsement of Forest Certification (PEFC) or Forest Stewardship Council certification (FSC). Timber from approved sustainable sources provides a renewable building material that takes in carbon from the atmosphere while growing and stores it for the life of the building.The 2 most commonly used framing materials – timber and steel – can be made into comfortable and appealing homes with good environmental performance: The lightweight house is particularly suited to creating cost-effective, flexible design solutions for challenging sites and reactive soils. Framed structures lend themselves to the creation of houses with diverse window and door openings for passive solar heating, natural light and ventilation. Lightweight floor frames can support internal and external wall, floor, and roof loads on low-impact footing systems. ![]() Lightweight houses are well suited to above-ground construction to minimise site disruption. Framing systems can be varied to suit almost any design or construction system, provided engineering certification is obtained. ![]() Lightweight framed construction is the most common construction system used in Australia. A lightweight frame is like a skeleton to which exterior wall claddings, internal linings, flooring, roofing, windows and doors are attached.
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