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RE: Joints in retaining walls

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Is this a site wall or basement wall?

Sharon Robertson, P.E.
Arcon Engineers
sharon(--nospam--at)arconengineers.com
Tel: 858-503-7854
Fax: 858-503-7858

-----Original Message-----
From: Nels Roselund [mailto:njineer(--nospam--at)att.net] 
Sent: Thursday, March 23, 2006 5:11 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: Joints in retaining walls

Alden, Why would reinforcing steel need to cross the control joint?

Nels Roselund, SE
South San Gabriel, CA
njineer(--nospam--at)att.net

-----Original Message-----
From: Alden Manipula [mailto:amanipula(--nospam--at)novagroupinc.net] 
Sent: Thursday, March 23, 2006 2:51 PM
To: seaint(--nospam--at)seaint.org
Subject: Re: Joints in retaining walls

I have another question regarding control joints in a retaining wall.

For a regular wall we would show a V-groove control joint w/ sealant and

have the reinforcement continuous thru the joint.

For a retaining wall, this detail would would seem to apply, but I'm 
worried that water would enter once the sealant has deteriorated.  I'm 
proposing a construction joint detail that looks more like an expansion 
joint detail in that the reinforcing is stopped 6" short of the joint 
and epoxy coated dowels are used across the joint. 

Does this seem excessive?  How do others handle the reinforcing thru the

control joints of a retaining wall?

Thanks.
>
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> Your following message has been delivered to the list
>  seaint(--nospam--at)seaint.org at 11:04:55 on 21 Mar 2006.
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>
>
>
> 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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