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Calculation Basis
Assumptions & Limits
- Preset values speed up the setup but do not replace final section or material verification.
- The page is designed for fast deflection and reaction checks.
- Local code rules, long-term effects, and connection details still need separate review.
Reference Basis
- Documentation: Methodology
- Documentation: Engineering Review
- Roark's Formulas for Stress and Strain
- Mechanics of Materials references
C24 Timber Reference
| Material class | C24 structural timber |
| Mean elastic modulus E0,mean | 11 GPa |
| Typical density | 420 kg/m^3 |
| Example member | 75 x 225 mm rectangular section |
| Example area A | 168.75 cm^2 |
| Example inertia I | 7119 cm^4 |
| Preset loading | Full-span uniform load |
Engineering Notes
- C24 timber members are often checked for floors, roofs, and joists where serviceability can govern before strength does.
- This page uses an example rectangular section so the stiffness input is meaningful out of the box, but the inertia should still be replaced with the real timber size in use.
- For timber design work, long-term creep, vibration, bearing, and connection performance often matter as much as instantaneous elastic deflection.
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