In Germany, wind loads are determined according to DIN EN 1991-1-4 with the National Annex DIN EN 1991-1-4/NA. The basis is the wind zone of the site, the terrain category and the building geometry.
LoCaStatik determines the wind zone from the address and calculates the peak velocity pressure and the wind pressure on walls, roofs and structural elements – in compliance with the standard and documented in a traceable report.
Germany is divided into wind zones 1 to 4, with basic wind velocities from 22.5 m/s (zone 1) to 30.0 m/s (zone 4) and basic velocity pressures from 0.32 to 0.56 kN/m².
The National Annex distinguishes between inland, coastal areas and the islands of the North Sea and Baltic Sea. This yields the peak velocity pressure as a function of building height.
For buildings up to 25 m in height, the National Annex permits simplified, height-dependent velocity pressures.
External pressure coefficients for walls, flat, monopitch, duopitch, hipped and vaulted roofs as well as force coefficients for free-standing walls, signboards and lattice structures.
The structural factor cscd accounts for gust effects and resonance in slender or tall structures.
The wind zone map of the National Annex assigns every municipality to one of the four wind zones. In LoCaStatik you enter the address, the wind zone is determined automatically and documented in the report.
DIN EN 1991-1-4 in conjunction with the National Annex DIN EN 1991-1-4/NA. The edition used is stated in every printed report.
The report contains all input values, intermediate steps and formulas with references to the standard and serves as a traceable load summary for structural analysis and checking.