How to Size a Column
Required Area: Load x Safety Factor / Allowable Stress
Euler Buckling: Pi^2 x E x I / (K x L)^2
Slenderness: K x L / r (radius of gyration)
Material Properties
- Steel A36: E = 29,000 ksi, Fy = 36 ksi
- Wood (Doug Fir): E = 1,600 ksi, Fc = 1,350 psi
- Concrete (4 ksi): E = 3,605 ksi, 0.85 f'c = 3,400 psi
Disclaimer: For estimation only. Consult a licensed structural engineer.