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Calculate Bending Member Flexure Strength for Wood:
Calculation:
Designer/Checker:
Input:
Metric Units
(Note: All input Metric units are converted to English units for the equations below and then the output English units are converted back to Metric)
AWC 2012 ASD-LRFD Manual For Engineered Wood Construction M3.3, Bending Members Flexure:
The following is for calculating the adjusted moment capacity of a wood member.
ASD
LRFD
Reference design value for bending (Fb - psi or kPa)
*Section modulus of member (S - in^3 or mm^3)
Load duration factor (Cd - for ASD only)
Wet service factor (Cm)
Temperature factor (Ct)
Incising factor (Ci)
Beam stability factor (CL)
Size factor (Cf)
Flat use factor (Cfu)
Repetitive member factor (Cr)
Time effect factor (TEF - for LRFD only)
*For a rectangular bending member with neutral access perpendicular to depth at the center, Section modulus, S = (bd^2)/6; b = width, d = depth
Output:
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Adjusted moment, M' =
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