NDS 2018 · NDS 2024 · SDPWS
Wood Design
Every equation, substitution and code reference — shown in full. Size a single member, or build a whole structure that distributes its own lateral forces.
Begin
Choose your path
Where would you like to start?
Individual calculators
Size a single beam, column, diaphragm, shear wall or connection with your own inputs — no project required.
- Beam & column design
- Diaphragm & shear wall (segmented / perforated)
- Connections incl. Simpson hardware
Building project
Lay out shear walls in plan on each floor, distribute story forces (rigid or flexible), then design every wall and diaphragm — all in one workspace.
- Custom diaphragm shapes (rectangle, L, T, U, polygon)
- Auto-uploads shear into a calculator per element
- Toggle element tabs · 3D model of the finished building