Column Strength Calculator
The allowable column compression is determined by the formula
P = Fc * Cp * A
P = The allowable column axial compression load
Fc = Allowable compression parallel to grain
Cp = Column stability factor
A = Area of column cross section
You may have to work the problem from each face, inputting "d"
for each side depending on lateral bracing or lack thereof.
Unbraced Column Length (inches)
Depth of Column (inches)
Width of Other Column Face
Allowable Compression Parallel to Grain (psi)
Modulus of Elasticity (million psi)
Load on Column (lbs)
Length / Depth Ratio
Column Load Entered
Length Depth Ratio Entered
Max Column Load
Max L/d Ratio
Column Load Pass/Fail
Length Depth Ratio Pass/Fail
Wood under this column must have a Fc perpendicular to the grain greater than
Column Stability Factor (Cp) =
FcE Value =
This calculator is intended for educational use only.
The user assumes all responsibility in its use.