Get Analysis

Bigger Glass = Bigger Force

Drag the slider to see how the same wind pressure creates dramatically different forces on different size windows.

Interactive: Watch Force Grow With Size
3' x 4'
Area
12
sq ft
Pressure
60
PSF (constant)
Total Force
720
pounds
12 sq ft x 60 PSF = 720 lbs

Understanding the Force Multiplier

Wind pressure is measured in PSF (pounds per square foot). This number tells you how hard the wind pushes on each square foot of glass. But the TOTAL force the window must resist depends on its size.

Think of it like this: if someone pushes on your chest with 10 pounds of force, that's manageable. But if 10 people each push with 10 pounds (100 pounds total), you'll fall over. Same pressure per person, but more "area" being pushed creates more total force.

Small Bathroom Window

2' x 3' = 6 sq ft
6 sq ft x 60 PSF = 360 lbs

Standard frame handles this easily

Living Room Picture Window

5' x 6' = 30 sq ft
30 sq ft x 60 PSF = 1,800 lbs

Heavy-duty frame and anchors needed

Storefront Glass Wall

10' x 8' = 80 sq ft
80 sq ft x 60 PSF = 4,800 lbs

Structural engineering required

This is why architects and engineers carefully size each piece of glass. A beautiful floor-to-ceiling window in Monroe County might experience over 5,000 pounds of wind force during a hurricane. The glass, frame, and anchors must all be engineered to handle this load.

Calculate Exact Forces for Your Glazing

Get pressure and force calculations for any window size in Monroe County

Calculate Glazing Loads