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.
L
Unbraced Column Length (inches)
d
Depth of Column (inches)
d2
Width of Other Column Face
Fc
Allowable Compression Parallel to Grain (psi)
E
Modulus of Elasticity (million psi)
R
Load on Column (lbs)
Compression
Length / Depth Ratio
Area
PSI
Column Load Entered
Length Depth Ratio Entered
Area Entered
PSI Entered
Max Column Load
Max L/d Ratio
Area Required
Max PSI
Column Load Pass/Fail
Length Depth Ratio Pass/Fail
Area Pass/Fail
PSI Pass/Fail
Wood under this column must have a Fc perpendicular to the grain greater than
PSI
Column Stability Factor (Cp) =
FcE Value =