column column

Combined Bending and Axial Loading
A member that has a load applied both in bending as in a beam,and axially as in a column is sized according to the formulas used in this calculator. First the maximum allowable load as a column is checked, then the maximum allowable load as a beam. When a column is axially loaded and a load pushes on the side, a reduction in the allowable axial load must be made. There is an interrelation, as the axial load increases towards the maximum allowed column load, the member is less able to take side loading. As the axial load decreases the member can accept more side load. Think of a popsicle stick between thumb and forefinger. As you squeeze together this loads the column along its axis. If you push on the middle of the stick it is easier to buckle the stick the harder it has been loaded axially.

This calculator uses math formulas from the NDS section 3.9 "Combined Bending and Axial Loading"
No representation is made as to whether they are correct or that they are correct for your situation.
They are for educational use only. The user assumes all risk from their use of this program.

Total Axial Load on Column(pounds)
Total Uniform Edgewise Bending Load on Column(pounds)
Length of Column (inches)
Depth of Column, in bending plane (inches)
Width of Column(inches)
Select Species and Grade
RESULTS
Allowable Fiberstress in Bending (Fb)(psi)
Modulus of Elasticity (E or MOE)(million psi)
Allowable Shear (Fv)(psi)
Column Modulus of Elasticity (Emin)(million psi)
Column Cp, Column Stability Factor
Based on length, size, and stiffness		 %
Column Fc, Allowable fiberstress in compression(psi)
From '05 NDS
Column FC, Adjusted Allowable axial load
based on Fc*Cp*D*B
Column Rb, Column Slenderness Ratio, must be under 50
square root of length x depth over width squared
Column allowable depth buckling stress (psi)
based on length, depth, and stiffness of species and grade
Column actual buckling stress (psi) This number must be less than the number above
Column allowable width buckling stress (psi)
based on length, width, and stiffness of species and grade
Column allowable bending stress(lbs)
Emin over slenderness ratio squared
Column actual bending stress(psi)
NDS 3.3.2 actual bending stress from a bending Moment=6M/bd^2
Column Pass/Fail
Column Pass<1>Fail