Specialty Structures Wind Load Calculator

The calculator handles all common window and door types including replacement windows, new construction windows, sliding glass doors, French doors, entry doors, storm doors, and all types of hurricane shutters. Both impact-rated and non-impact products are supported.

No engineering degree required. The calculator is designed for contractors, installers, and sales professionals. The interface guides you step-by-step through the process. However, understanding basic ASCE 7 concepts is helpful for interpreting results.

Both ASCE 7-22 and ASCE 7-16 are fully supported. You can toggle between versions for any project. Most jurisdictions have adopted ASCE 7-16, but ASCE 7-22 adoption is growing. Check with your local building department to confirm which version applies.

You'll need: project address or coordinates, building dimensions (height and width), roof type, exposure category (B, C, or D), and the dimensions of the window/door being calculated. The calculator will guide you through each input with helpful tooltips.

Yes. All your projects are automatically saved to your account. You can duplicate previous projects to speed up calculations for similar buildings, or use templates for common building types you work with frequently.

Yes. Our reports are accepted nationwide by thousands of building departments. They include all required information: wind speed, exposure category, topographic factors, elevation factors, zone diagrams, and detailed calculation steps per ASCE 7.

Yes. You can cancel anytime from your account dashboard. Your access will continue until the end of your paid billing period. No cancellation fees or penalties.

Yes. You can try our free demo calculator on the Free Calculator page. The demo uses limited wind speeds and building configurations, but gives you a complete feel for how the calculator works and what the reports look like.