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Re: Joints in retaining walls

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FWIW I once saw a cast concrete site retaining wall (i.e. not a building wall) somewhere in California, about 6' or 7' tall, with a fine, full-height vertical crack every 10', aligned with the inserts for a metal railing.  Not a "real" joint in sight!

Ralph

In a message dated 3/21/06 1:41:03 PM, gloomis(--nospam--at)MasterEngineersinc.com writes:

CRSI Design Handbook - Working Stress Design 1963 recommends contraction
joints at about 25' and expansion joints at every 4th joint - 100'.  The
newer CRSI 1996 states the same recommendations and also references
Figure 14-5 which is based on ACI 350.

Gary Loomis