Poland
According to Polish National Annex PN EN 1991-1-4/NA: 2008
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Article |
Commentary |
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4.1(1) |
The value of vb.0 is calculated according to the following formulea (with respect to the wind zone)
Where: A is the altitude above the sea level
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4.2(1)P Note 1 |
see the table above
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4.2(1)P Notes 2 and 3 |
cdir, cseason factors specified by the user according to the Annex
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4.2(1)P Note 5 |
Using the default EN
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4.3.1(1) Notes 1 and 2 |
For cr(z) see 4.3.2(1) Orography factor co(z) inputted by the user as a constant value
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4.3.2(1) |
The factor cr(z) is not necessary for evaluation of the peak wind velocity pressure.
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4.4(1) Note 2 |
The turbulence factor Iv(z) is not needed for evaluation of qp(z) according to the Polish Annex
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4.5(1) Note 1 |
Peak velocity pressure is enumerated according to following formulae:
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4.5(1) Note 2 |
Using the default EN
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