Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Doug. Fir Lumber Grades

[Subject Prev][Subject Next][Thread Prev][Thread Next]
I am checking an existing "panelized" roof system, (cira 1970's), for the addition of equipment and screening on the roof. Ever since, I believe, the '94 UBC there have been stress values for doug. fir 2x and 4x for "No. 1" and "No. 1 and Better", and I have never understood when it is appropriate to use the "No. 1 and Better" values. Can anyone shed some light on this?
Thanks in advance,
Larry Hauer, S.E.

Want to do more with Windows Live? Learn “10 hidden secrets” from Jamie. Learn Now