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Free online calculation tools for structural design according to Eurocodes
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Eurocode 1 Wind load on flat roofs (external and internal pressure coefficients)
Calculation of wind load action effects on flat roofs (including small parapets). The net effect of external and internal wind pressure for zones F, G, H, I on the roof surface are calculated from the corresponding external pressure coefficients
EN 1991-1-4:2005+A1:2010 Section 7.2.3
Roofs with slope α of -5° < α < 5°, consisting of one skin, on buildings having permanent side walls.
Supported National Annexes:
A) Calculation of pressure coefficients: Apart from countries that adopt CEN recommended values for section 7.2.2 of EN1991-1-4, the following National Annexes are supported : Croatia. B) Peak velocity pressure: The value can be specified manually. Otherwise automatic calculation of peak velocity pressure is supported for countries that adopt the CEN recommended values for the related NDPs, and also for the following National Annexes: Finland, Portugal. The National Annexes of Germamy, Norway, Spain, Sweden, Switzerland are NOT supported.