Wind load

Peak velocity pressure over the height, pressure zones on the walls and the roof, net pressures and the total wind force on a rectangular building — to EN 1991-1-4.

FREE · NO SIGN-UP v1.0.0 · verified against 9 reference cases

INPUTEN 1991-1-4 · kN · m

1 · Site Basic wind velocity v_b,0 [m/s] Terrain category

c_dir c_season c_o ρ [kg/m³]

2 · Building b across the wind, d along it

h [m] b [m] d [m]

Roof c_s·c_d

3 · Pressure coefficients c_pe,10 · editable

Internal pressure c_pi

Results update as you type. Table values are a starting point — confirm every coefficient against your National Annex.

MEAN WIND v_m(z) [m/s]

PEAK VELOCITY PRESSURE q_p(z) [kN/m²]

ZONES · elevation and plan

q_p(h)1.342 kN/m²

TOTAL FORCE ALONG WIND949.1 kN

OVERTURNING MOMENT8542 kN·m

EQUIVALENT PRESSURE1.758 kN/m²

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HOW IT'S CALCULATED · WITH YOUR NUMBERS

Step by step, with your numbers

01
Equilibrium████ ██ ███████ · ██████ = ██.██
02
Reactions████ ██ ███████ · ██████ = ██.██
03
Shear force████ ██ ███████ · ██████ = ██.██
04
Bending moment████ ██ ███████ · ██████ = ██.██
05
Deflection████ ██ ███████ · ██████ = ██.██
06
Stress████ ██ ███████ · ██████ = ██.██

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Reference: EN 1991-1-4 §4 (wind velocity and velocity pressure), §5 and §7.2 (pressure coefficients). Coefficients must be confirmed against the National Annex.

BEYOND THE CODE TABLES

Complex shapes, interference, comfort and cladding pressures — we run the CFD.

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