Skillion Roof Rafter Span Tables

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Skillion roof rafter span tables.

The pitch and span of your roof will dictate how long of a rafter you ll need use maximum span calculator to help you find your rafter size. Rafter span tables use these tables to determine lengths sizes and spacing of rafters based on a variety of factors such as species load grade spacing and pitch. Maximum span of bearer mm upper floor load width 3600mm continued continuous spans. Skillion roof rafter detail diagram with all dimensions and birds mouths scale.

Visit the roof framing page for more information on cutting roof rafters and visit the roof pitch calculator for determining rafter lengths based on rise and run. Table 33 bearers supporting two storey loadbearing walls lower floor load width 900mm or 1800mm continued seasoned hardwood f17. If you look at the rafter span chart you ll notice that 2x4s can be used for rafters on spans up to 11. Rafter span tables for surveyors roof construction surveyors span tables for designing roof rafters for pitched roofs flat roofs and ceiling joists 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.

Step 1 rafter spacing. Anything beyond that you are looking at using 2x6s for most sheds. Select output fraction precision decimal inch or metric mm. Choose rafter spacing from table 10 1 the options are 480 600 or 900 mm.

Skillion lean to roof profile diagram quest.