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RE: Traffic Railing post loads

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From: Joe Grill [mailto:jgrill(--nospam--at)]
Sent: Tuesday, March 28, 2006 2:01 PM
To: seaint
Subject: Traffic Railing post loads


I have just inherited a problem which is to check the post base connection at the post supporting traffic railing.  I’m not a bridge engineer and haven’t looked at this sort of thing for quite some time.  But, none the less it is now my problem.  Anyway, the way I read the ASHTO spec. (our version is 1996) you have to put the 10 kip vehicle load at each post.  My boss suggests that section would allow you to distribute 5 kips over 4 posts instead of the 10 kips to one post.


It’s been a L-O-O-O-O-O-NG time, but IIRC, that “distributed over several posts” thing is only for systems designed to act in concert, such as these fancy-schmancy “energy dissipation” systems they put on secondary highways here in Texas (what have the railroad ties ‘n such tied together wit’ a steel cable).