Wind Load Calculator
Basic Wind Pressure
Calculate wind pressure from wind speed
ASCE 7 Method
Full ASCE 7 wind pressure calculation with exposure and height factors
Formula
q = 0.00256 × V² (psf) | ASCE 7: qz = 0.00256 × Kz × Kzt × Kd × V²; p = qz × G × Cp
Frequently Asked Questions
How much wind pressure can a building withstand?
Most residential buildings are designed for 90-130 mph basic wind speeds, producing 20-45 psf design pressures. In hurricane-prone coastal areas, design wind speeds may exceed 170 mph. Building codes specify minimum requirements based on location and occupancy.
What wind speed causes structural damage?
Minor damage (shingles, siding) starts around 50-60 mph. Significant structural damage begins at 75-90 mph. Major destruction occurs above 110 mph. Tornado-strength winds above 150 mph can level frame buildings.
How does building height affect wind load?
Wind speed and pressure increase with height above ground due to less surface friction. At 30 feet, wind pressure can be 20-40% higher than at ground level, depending on the terrain exposure category.
You may also need
A
Snow Load Calculator
Free snow load calculator. Calculate the weight of snow on your roof based on snow depth, density, and roof area for structural safety.
ScienceA
Wind Chill Calculator
Free wind chill calculator. Calculate the wind chill temperature index from air temperature and wind speed.
ScienceA
Beaufort Scale Calculator
Free Beaufort wind scale calculator. Convert wind speed to Beaufort force number with sea and land condition descriptions.
Science