Architect / building designer must supply truss loads + supports
HUD RSDG §5.6.3Description
Roof trusses are manufactured to the building designer's specified loads and support locations — the architect provides design loads, truss profile, support locations, and any special requirements (cathedral, scissor, attic-room) to the truss manufacturer. The architect is also responsible for providing PERMANENT bracing of the truss system at locations designated by the truss designer to avoid invalidating the truss warranty.
Why this exists
The truss manufacturer engineers individual trusses but not the system. Vertical cross-bracing + bottom-chord runners + long-web-member bracing are the architect's responsibility — properly attached roof sheathing typically provides system bracing in light-frame residential, but cathedral / scissor / long-span trusses need explicit cross-bracing.
Categories
Source
Solver enforcement
Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.
Related directives
- Continuous load path from roof to foundation · HUD RSDG §2.4
- Residential structural reliability targets 1-in-100 to 1-in-1000 annual probability of failure · HUD RSDG §2.5
- Residential floor live load: 40 psf minimum (30 psf sleeping rooms) · HUD RSDG §3.4
- Wind load design uses ASCE 7 basic wind speed for the locality · HUD RSDG §3.6
- Ground snow load for Virginia: 25 psf eastern, up to 40 psf western mountains · HUD RSDG §3.7
Last reviewed 2026-05-14.