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RE: retaining all vehicle surcharge

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"Vehicle traffic" as in a road or as in something could pull up and park?

IBC design load for a parking garage is 50 psf, but I'd say this is
UN-conservative if the vehicle can park immediately adjacent to the wall.

AASHTO requires 250 psf for heavy traffic (tractor/semi's in a parking lot,
for example).  I don't know how a fire truck rates in comparison to an
AASHTO design truck (72 kip total load, 16 kip max wheel load).

Your value is somewhere in between (ain't I helpful?).

Multiply your vertical load by the active or passive pressure coefficient
(Ka or Ko) to get the horizontal load on the wall.

---
Jason Kilgore
Leigh & O'Kane, LLC
Kansas City, Missouri
________________________________________
From: Mark D. Baker [mailto:shake4bake(--nospam--at)earthlink.net] 
Sent: Wednesday, August 04, 2004 3:52 PM
To: seaint(--nospam--at)seaint.org
Subject: retaining all vehicle surcharge

What is a good surcharge value to use for a residential retaining wall that
would have vehicle traffic on the retained side of wall, potentially a
firetruck loading? I don't want to do a wheel loading, just a psf surcharge
loading.

TIA

Mark



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