We have a requirement that our beam guard post have a maximum fiber stress Fb of 1,200. I believe that AASHTO has a similar requirement (AASHTO M168-6 is below).
Guardrail Posts-Guardrail posts shall be a stress grade of 8.2 MPa (1200 psi) or more,
conforming to the applicable standards contained in AASHTO-ARTBA-AGC, A Standardized
Guide to Highway Barrier Hardware. When a preservative is required, framing and boring shall
be completed prior to treatment in accordance with M 133.
What is the Fb of white pine?
If the Fb of white pine is lower than 1,200 do we need to be concerned about this even if there is a passing crash test?
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