Need a book? Engineering books recommendations...

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

Masonry allowable bearing stress vs. wood brng stress

[Subject Prev][Subject Next][Thread Prev][Thread Next]

Why is masonry allowable bearing stress much less than wood allowable perpendicular to grain bearing stress?  The 1997 UBC section 2107.2.10 equation 7-23 states Fbr = 0.26f'm and that would be 390 psi for f'm=1500 psi.  Without special inspection the 390 is reduced to 195 psi.  However, perp-to-grain bearing on DF-L is 625 psi.