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Re: control joints in grouted cmu walls

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The National Concrete Masonry Association has a detailed report (TEK 10-2A)
on control joints for concrete masonry walls.  They have recommendations for
control joint spacing, the use of both control joints and horizontal wall
reinforcing, and the use of horizontal wall reinforcing without control
joints to control cracking.  Their phone number is (703) 713-1900 and their
web page is www.ncma.org.



----- Original Message -----
From: <PFFEI(--nospam--at)aol.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Monday, August 14, 2000 8:19 AM
Subject: control joints in grouted cmu walls


> what are the requirements for control joint spacing in a grouted cmu wall?
I
> found general typical details in the Concrete Masonry Asociation handbook
> (recommend approximately 50' - 60' spacing), but no reference in code.
What
> are the issues with leaving the joints out all together? I have a single
> story Zone 4 "L" shaped building, 50' and 60' long on the end walls,
> longitudinal wall max length of 120', and 2 sections at the L side are 30'
> and 90'.  What is a common joint filling material if block is left exposed
to
> view ? (Using split face block)
> Thanks - Paul Franceschi, S.E.
>
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