ADU Structural Design
ADU structural design makes sure your accessory dwelling unit is safe, buildable, and properly supported. Whether the project is a detached ADU, attached ADU, garage conversion, or backyard unit, the structure must be designed to carry roof, wall, floor, wind, seismic, and foundation loads correctly.
Structural Calculations And Framing
We review the ADU layout, span conditions, roof framing, floor framing, wall framing, beam locations, post supports, and foundation requirements. Structural calculations may include beam sizing, joist sizing, rafter sizing, header checks, shear wall coordination, footing design, bearing checks, deflection checks, and load path verification.
Code-Based Design
ADU structural design can be prepared with reference to applicable codes such as the International Residential Code (IRC), International Building Code (IBC) where required, local city or county amendments, and relevant BS Codes / Eurocodes for UK-based projects.
What We Can Include
- ADU structural calculations
- Roof framing plan
- Floor framing plan
- Wall framing notes
- Beam and header sizing
- Post and column sizing
- Foundation and footing notes
- Shear wall coordination
- Bearing and deflection checks
- Structural connection notes
- Permit-ready structural drawings
Need ADU Structural Design?
Send your project address, ADU layout, existing drawings, photos, site information, and any city comments. We can prepare clear ADU structural design drawings and calculations for permit review and construction coordination.