3/7/2024 0 Comments C channel rafter span table(They are available in three standard lengths 20mm, 32mm and 100mm). threaded end spigots with nut and washer provide a positive fixing. They are sturdy (0.9mm thick) and the zinc plated 12mm dia. These 19mm diameter flow-coat galvanised and lacquered seamless tubular sag bars are prefered by many consultants and structural engineers not only for visual effect, but also from a structural point of view. (Typically spans less than 3.50m do not require restraints). Where possible the channel should face toe to toe with the restraint situated in the lower gauge line holes. Standard purlin cleats can be used for this system.Īs the bottom flange of the C-Channel is usually unrestrained we recommend that a Hi-Span tubular sag rod is fitted. The benefit of a continuous member is reduced deflections, which in turn can reduce the sections size and therefore cost. The double span design is usde when there is no depth restrictions within the floor zone. Please ensure that the holes in the standard MFB cleat projects far enough beyond the flange of the hot rolled member to provide adequate fixing to the C-Channel. The single span design is more commonly used than the double span design due to floor depth restrictions. While mezzanine floor beams are normally punched with 18 diameter holes as standard, 14 diameter holes are also available in these sections, together with the option of counterformed holes. The mezzanine floor beam depths of 127, 220, 270, and 290mm are all catered for within the range, together with channel depths of 150, 170, 205, 230, 255, 305 and 350mm, which are fully compatible with our 'Z' purlin and rail sections. Primarily for use within mezzanine floors, C-Channel sections can also be applied in many other circumstances such as door framing, roof trimming, window trimming, brickwork restraints, parapet rails and side rails. Hi-Span C-Channels are a comprehensive range of channels for a diversity of applications.
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