Non-load-bearing walls do NOT require sized headers
HUD RSDG §5.5.3Description
Openings in non-load-bearing walls don't require structural headers — single studs and a horizontal blocking member of the same size suffice. Common practice still uses a double or triple 2x4 for larger openings for added rigidity + a fastening surface, but it's not structurally required.
Why this exists
Confusion about this rule is one of the most common spec-sheet errors. Interior partition walls that don't carry loads from above are free of header sizing requirements — the framing is just for rigidity + fastening.
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.