On the map of the national annex, the French territory is divided by canton into five regions of snow identified from A to E. Three of these regions (A to C) are subdivided into two to account for accidental snow precipitation.
Characteristic value of snow on the ground without elevation sk,0
Design value of exceptional snow load on the ground sk,0
Snow zoning of France (2011-2022)
The French overseas departments, overseas territories and overseas collectivities are not subject to snowfall except Saint Pierre and Miquelon. Characteristic value of snow on the ground without elevation at Saint Pierre and Miquelon: sk,0 = 2.60kN/m2.
Peak wind velocity for Serviceability Limit States vp(z),SLS
Peak wind velocity for Ultimate Limit States vp(z),ULS
* Here, the orography factor is calculated according to Procedure 1, for an orography consisting of obstacles of various heights and shapes. This type of orography is the most frequently encountered.However, if the building is in a case of orography consisting of well individualized obstacle (isolated hills and ridges or cliffs and escarpments) the orography factor must be calculated according to the procedure 2. According to EN 1991-1-4 §4.3.3(1), the calculated orography factor (1.018) is not taken into account because it does not increase wind velocities by more than 5%.