![]() Please call our sales team to discuss this option. *** Flow-tile can be manufactured with 450mm tile lengths in 0.7mm gauge as a special order. Flow-Tile 350mm tile length** – maximum 700mm purlin centres What Are the Common Purlin Spacing for Corrugated Roofing The spacing of purlins on roofs and girts on wall is usually 4 to 6 ft.If not verified increase the width or height of the beam and do the calculation again. Wave-Tile 350mm tile length – maximum 700mm purlin centres Calculate all characteristic loads (dead, snow, wind, live load, etc.) Choose a timber material and find material properties ( k m o d, f c.Brit-Tile 333mm tile length – maximum 666mm purlin centres Choose rafter spacing from Table 10.1 the options are 480, 600 or 900 mm.You will need to consult a structural engineer to see if these will be appropriate to your building. **Maximum purlin spaces are not suitable in all scenarios. Basically, it coats the steel with zinc to minimize rust buildup. 0.7mm gauge, 32/1000, 34/1000 14/3 Corrugated, 333 profile One of the many wonders of engineering is a process called galvanization.Timber Tek screws should not be used on anything smaller than a 2" x 2" timber support as the aggressive thread may split smaller timbersīox profile and traditional 3" corrugated * Minimum purlin size will vary according to span. Thickness of Steel Maximum Spacing of Sheet, mm Purlins C/C, m 1’00 2’0 0’80 1’8 0’63 1’6 4. In case of fabricated roof trusses, the spacing of purlins are guided by the maximum distances. Z Purlins are connected to the rafters using cleats. of sheets, at least one purlin should be placed ( on simple rafter ) to support sheets at mid way to avoid sagging. Most areas exceeding 100m but not exceeding 200m (refer to BS 6399-3): 1 kN/m² snow load & 0.9 kN point load. All purlin joints must be supported by a rafter. Imposed (live) loads (snow load and short-term point load) Altitude not exceeding 100m: 0.75 kN/m² snow load & 0.9 kN point load. Steel roof panels serve as an environmental barrier as well as providing restraint to the supporting purlins. Figure 1.1 Typical Metal Building Framing. Minimum recommended purlin size is 4”x 2” (50mm x 100mm) in timber or Z140mm x 1.6mm in steel*. 1.1 shows coldFigure-formed steel roof framing for a typical metal building. Purlins provide horizontal support for the sheets and form part of the framework for the building.
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