The National Annex DIN EN 1991-1-4/NA divides Germany into four wind zones. The wind zone defines the basic wind velocity from which all further wind loads on a structure are calculated.
The assignment is made per municipality according to the wind zone map of the National Annex. In the LoCaStatik location tool you can determine the wind zone, velocity pressure, snow load and altitude for any address in Germany after free registration.
Lowest wind loads, large parts of southern Germany.
Large parts of central and northern Germany, with values increasing towards the coast.
Highest wind loads, on the North Sea coast and the North Sea islands.
Above 800 m above sea level, the velocity pressure is increased by the factor (0.2 + H/1000). Ridges, summits and sites above 1100 m require separate specifications.
Basic wind velocity vb,0, basic velocity pressure qb,0 = ρ/2 · vb,0² with ρ = 1.25 kg/m³ and peak velocity pressure qₚ at a height of 10 m according to DIN EN 1991-1-4/NA, Annex NA.B.
| Wind zone | vb,0 [m/s] | qb,0 [kN/m²] | qp inland [kN/m²] | qp coast [kN/m²] |
|---|---|---|---|---|
| Zone 1 | 22.5 | 0.32 | 0.54 | – |
| Zone 2 | 25.0 | 0.39 | 0.66 | 0.90 |
| Zone 3 | 27.5 | 0.47 | 0.80 | 1.08 |
| Zone 4 | 30.0 | 0.56 | 0.95 | 1.29 |
qₚ at a height of 10 m for the mixed profiles inland and coastal areas. On the North Sea islands (wind zone 4), qₚ = 1.50 kN/m² applies at a height of 10 m. The values do not replace a calculation for the specific structure.
Wind loads walls (without roof)
Wind loads on entire building (walls & roof) with flat roof
Wind loads open buildings
Wind loads flat roofs
Wind loads on entire building (walls & roof) with monopitch roof
Wind loads monopitch roofs
Wind loads on entire building (walls & roof) with duopitch roof
Wind loads duopitch roofs
Wind loads on entire building (walls & roof) with butterfly roof
Wind loads duopitch/butterfly roofs
Wind loads on entire building (walls & roof) with hipped roof
Wind loads hipped roofs
Wind loads on entire building (walls & roof) with barrel-shaped roof
Wind loads barrel-shaped roofs
Wind loads on entire building (walls & roof) with multispan roof
Wind loads multispan roofs
Wind loads domed roofs
Wind loads canopies
Wind loads monopitch canopies
Wind loads doupitch canopies (duopitch roof)
Wind loads duopitch canopies (trough roof)
Wind loads multibay canopies
Wind loads structural element with sharp edged section
Wind loads structural element of rectangular section
Wind loads circular cylinder
Structural elements with regular polygonal section
Wind loads plane lattice structures
Wind loads spatial lattice structure
Structure coefficient cscd
Wind loads signboards
Wind loads free-standing walls
Wind loads on flags
The wind zone is defined per municipality, not per postcode. A postcode can cover several municipalities. The LoCaStatik location tool therefore determines the zone from the exact address.
Wind zone 4 is the zone with the highest wind loads in Germany, with a basic wind velocity of 30.0 m/s and a basic velocity pressure of 0.56 kN/m². It applies on the North Sea coast and the islands.
The basic wind velocity of the zone gives the peak velocity pressure qₚ depending on height and terrain. Multiplied by the aerodynamic coefficients of the wall or roof surface, this gives the wind pressure w = cₚₑ · qₚ.