For buildings with height < 15 m and non-slender, ( c_s c_d ) can be taken as 1.0. For dynamic sensitive structures:
[ c_s c_d = \frac1 + 2 \cdot I_v(z_s) \cdot \sqrtB^2 + R^21 + 7 \cdot I_v(z_s) ]
Where:
This is complex. In your Excel sheet, create a simplified version:
For typical buildings (< 50m), simply set ( c_s c_d = 1.0 ) or provide a lookup table based on height and slenderness from Eurocode Annex D. wind load calculation excel sheet eurocode
If you are moving beyond basic rectangular buildings, look for these advanced Excel capabilities:
For buildings with ( h \leq 15 , m ) and not dynamically sensitive:
[
c_s c_d = 1.0
]
Otherwise, use Annex D or simplified method (reduction for higher slenderness). In many Excel tools, allow user input or default to 1.0 for low-rise. For buildings with height < 15 m and
An Excel sheet for wind load calculation per Eurocode 1991-1-4 is an indispensable efficiency tool for structural design offices. It reduces calculation time from hours to minutes, minimizes human error in coefficient selection, and ensures traceability. By embedding the code’s decision tables and formulas, the engineer can focus on design decisions rather than arithmetic.
Note: Always verify that your spreadsheet respects the relevant National Annex for the project location. Provide a clear cell-by-cell reference to EN 1991-1-4 clauses for auditability. This is complex
Outputs total wind force on the entire building: $$F_w = c_s c_d \cdot \sum (w_e \cdot A_ref)$$ And per-floor lateral forces for structural analysis.
Let’s run a typical case: a 30m tall rectangular office building in a suburban area (Terrain Category III) in the Netherlands (v_b,0 = 24.5 m/s).