Wind is the governing load
In most of Florida, wind — not gravity — controls roof framing design. The Florida Building Code references ASCE 7 for determining design wind pressures based on location, risk category, and exposure.
Higher wind pressures increase uplift on roof trusses, which must be resisted by connections all the way down to the foundation.
Key terms on your structural sheets
Look for these values before ordering trusses:
- Ultimate design wind speed (Vult)
- Risk category
- Exposure category (B, C, or D)
- Internal pressure coefficient / enclosure classification
- Roof dead and live loads
Who designs what
The truss designer designs individual trusses for the loads provided. The building designer or engineer of record is responsible for the overall load path, including how trusses connect to walls and beams. Clear communication between both prevents field problems.
Always reference the current edition of the Florida Building Code adopted by your jurisdiction.
This article is general information, not engineering or legal advice. Always confirm requirements with your engineer of record and local building department.