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Vdes(serv.) = 28m/s Vdes(ult.) = 50m/s
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DESIGN DETAILS

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The length of span 1 measured from the centre of its outer support to the centre of the central support
Maximise
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The length of span 2 measured from the centre of its outer support to the centre of the central support
Maximise
mm Maximise
mm Help
Distance from roof beam to next roof support i.e the span of the rafter (or roof truss) from the roof beam to the next adjacent beam or wall
mm Help
Distance from roof beam to next roof support i.e the span of the rafter (or roof truss) from the roof beam to the next adjacent beam or wall
degrees
Modify manual load Help
Please select your roof compostion here. Note that SpanMan automatically calculates the weight of battens and rafters and adds it to the roof weight. For details of weights refer to ABOUT > Technical.
Additional dead loads can also be added in the CRITERIA screen.
Modify manual load Help
Please select your ceiling compostion here. For details of weights refer to ABOUT > Technical
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Pick 'List all suitable timber and steel sections' to design across all timber and steel sections. Alternatively design in a specific timber or steel material type. Press DESIGN to obtain sizes.
design Criteria