Flat Roof Joist Sizes C16
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Click on a span to generate a full calculation you can adjust the exact span.
Flat roof joist sizes c16. Live load psf dead load psf span calculator for wood joists and rafters. Fsc standard kiln dried regularised c16 treated carcassing 220 x 45mm. This span table is to the format and methodology given in bs 5268 7 2. Span tables for flat roof joists to bs 5268 7 2 imposed loads of 0 75 kn m for maintenance and snow load are applicable where there is no permanent access no fixed ladder or staircase and most areas where the altitude does not exceed 100 metres refer to bs 6399 3.
C16 timber is commonly used in floor and roof joists for internal building work. Section mm length availability metres imperial metric. Sawn c16 and easy edge timber. 400mm 450mm 600mm 97 x 47 1 84 1 81 1 74 122 x 47 2 43 2 38 2 27 147 x 47 3 08 3 02 2 87 170 x 47 3 74 3 67 3 46 195 x 47 4 41 4 31 4 07 220 x 47 5 08 4 96 4 67.
Spacing in exterior exposure. Find the column for your dead load and spacing and the row for your timber size to find the permissible clear span in metres. Fsc standard kiln dried regularised c16 treated carcassing 195 x 45mm. Span calculator for wood joists and rafters available for the iphone.
Surveyors and structural engineers utilise data from tables below to help calculate the correct size strength and centres of roof timbers for the required spans and loadings. Trade sign in or apply for trade prices. C16 easy edge c16 j joist. Maximum clear span of flat roof joists in metres for sc3 timber spacing between joists size of roof joist 400mm 450mm 600mm 47 x 97 1 84 1 81 1 74 47 x 120 2 43 2 39 2 27 47 x 145 3 08 3 02 2 87 47 x 170 3 75 3 67 3 42 47 x 195 4 41 4 31 3 92 47 x 220 5 04 4 85 4 41 75 x 170 4 50 4 38 3 99.
Surveyors span tables for designing roof rafters. 3 0 3 6 4 2 4 8 5 4 6 0. It s often chosen as the standard timber for roof extensions or joist refurbishment as it s the most cost effective internal structural timber. 4 22 inc vat per metre.
These spans were calculated using our flat roof joist calculation. Tables assume a minimum c16.
