Calculate Bending Member Flexure Strength for Wood

The following is for calculating the adjusted moment capacity of a wood member.



Fb - Reference design value for bending
S - *Section modulus of member
Cd - Load duration factor
Cm - Wet service factor
Ct - Temperature factor
Ci - Incising factor
CL - Beam stability factor
Cf - Size factor
Cfu - Flat use factor
Cr - Repetitive member factor
TEF - Time effect factor
*For a rectangular bending member with neutral access perpendicular to depth at the center, Section modulus, S = (bd^2)/6;
b = width, d = depth
M'(ASD) - the adjusted moment
M'(LRFD) - the adjusted moment