Wind Uplift Calculator
Calculate wind pressure and uplift force on roofs based on wind speed, exposure, and roof zone.
How to Use the Wind Uplift Calculator
- Enter the design wind speed in m/s.
- Select the terrain exposure category.
- Select the roof zone (field, edge, or corner).
- Click Calculate to see pressure, uplift, and fastener spacing recommendation.
Anwendungsfälle
- •Designing roof cladding and fastening systems.
- •Checking roofing product specifications against design loads.
- •Structural assessment of roof assemblies.
- •Building permit documentation support.
Formel
P = 0.613 × V² × Ce². Uplift = P × zone factor / 1000 kPa.
Häufig gestellte Fragen
What are roof zones?
Roof field experiences the lowest wind pressure; edges and corners experience higher pressures due to flow separation.
What does exposure mean?
Open terrain produces the highest wind speeds at roof level; urban areas provide shielding and reduce effective wind speed.
Is it free?
Yes, all calculators on OhMyCalc are completely free.