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RE: Joints in retaining walls

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Amrhein recommends joints based on spacing of horizontal steel. For 48"
spacing, L/H = 2, for 32", 2.5, for 16", 3, for 8", 4. Joints should never
exceed, according to Amrhein, 40 ft, 45 ft, 50 ft or 60 ft, respectively.

Mark E. Deardorff, Structural Engineer
Burkett & Wong
San Diego, CA
> -----Original Message-----
> From: Alden Manipula [mailto:amanipula(--nospam--at)novagroupinc.net]
> Sent: Tuesday, March 21, 2006 11:05 AM
> To: seaint(--nospam--at)seaint.org
> Subject: Joints in retaining walls
> 
> For a cantilevered concrete retaining wall I've been told to place
> joints in a long retaining wall 20'-0" o.c., maximum, with every 4th
> joint to be an expansion joint w/ some sort of compressible fill
> material.  This is supposedly a 'rule of thumb' type of specification.
> 
> I, however, can not find a documented reference.  Does anyone know where
> this originated?
> 
> Thanks, again.
> 
> Alden
> 
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