vb=cdir⋅cseason⋅vb,0v sub b equals c sub d i r end-sub center dot c sub s e a s o n end-sub center dot v sub b comma 0 end-sub vb,0v sub b comma 0 end-sub
The primary objective is to determine the acting on the external and internal surfaces of the structure, which is then converted into structural forces.
Eurocode 1 Part 1-4 (EN 1991-1-4) is notoriously rigorous. Calculating wind loads involves determining wind speed, directional factors, terrain categories, roughness factors, pressure coefficients, and net pressure calculations.
Depending on your needs and budget, you can find Excel-based wind load calculators in several forms. wind load calculation excel sheet eurocode
=0.5*1.25*B5^2*D5
. Use Excel’s native math functions to determine wall zone lengths: =MIN(Width_b, 2*Height_h) Use code with caution.
Use Excel's Data Validation tools to limit inputs. For instance, restrict building heights to positive numbers and limit wind speeds to a realistic range (e.g., vb=cdir⋅cseason⋅vb,0v sub b equals c sub d i
Output (from sheet):
), which changes based on the terrain. Below is the reference logic that must be coded via IF or IFS functions in Excel: Terrain Category Description zminz sub m i n end-sub Sea or coastal area exposed to the open sea I Lakes or area with negligible vegetation II Area with low vegetation and isolated obstacles III Areas with regular vegetation or buildings IV
For z≥zmin∶Iv(z)=kIco(z)⋅ln(z/z0)For z is greater than or equal to z sub m i n end-sub colon space cap I sub v open paren z close paren equals the fraction with numerator k sub cap I and denominator c sub o open paren z close paren center dot l n open paren z / z sub 0 close paren end-fraction Depending on your needs and budget, you can
: Used for localized cladding and fixing design (loaded area cpe,10c sub p e comma 10 end-sub : Used for global structural frame design (loaded area For structures with loaded areas between , use a logarithmic interpolation formula in Excel:
Create dropdown menus for choosing wind direction (0° or 90°). Section D: Results Output