Timber Grade Selection Calculator
Compare 9 species/grade combinations for a beam application with bending and deflection checks.
Inputs
ft
psf
ft
in
in
Results
Grades that pass
5
Max bending moment12,800 lb·ft
Section modulus provided144 in³
Uniform load on beam400 lb/ft
DF-L Select Struct. bending ratio0.67
DF-L Select Struct. defl. ratio0.45
DF-L Select Struct. pass1
DF-L No.1 bending ratio0.79
DF-L No.1 pass1
DF-L No.2 pass0
Southern Pine SS pass1
Southern Pine No.1 pass1
Southern Pine No.2 pass1
E. White Pine SS pass0
E. White Pine No.1 pass0
E. White Pine No.2 pass0
How to Use This Calculator
- Enter Beam span, Total load, and Tributary width.
- Set Beam width and Beam depth.
- Review the Grades that _pass result.
- Use Max bending moment (lb·ft) and Section modulus provided (in³) to inform your decision.
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