What year did allowable wood bending stress values change from Fb=1450psi in the Timber Constrction Manual to the much reduced values in the AFPA Deesign Guides?
If I am checking a structure built when the 1450psi was enforced, can I use that bending value today for checking heavier loads on the structure?
If I am checking a structure built when the 1450psi was enforced, can I use that bending value today for checking heavier loads on the structure?