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RE: cmu wall control joints

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from "reinforced masonry engineering handbook" - amrhein - 3rd edition (it
even smells old)

pg. 23 - "the maximum horizontal spacing of control joints should be
approximately 60 ft, but a length (spacing) to height of wall ratio is a
better measure (height is distance between the lateral points of support of
the masonry wall)."

there's also a table of L/H ratios...

David Adie, P.E., LEED A.P.

413 Pine Street - Suite #300 - Seattle, WA.  98101
p 206 343 0460 - f 206 343 5691

-----Original Message-----
From: Mark D. Baker [mailto:shake4bake(--nospam--at)] 
Sent: Friday, March 04, 2005 10:50 AM
To: seaint
Subject: cmu wall control joints

For any cmu experts out there..


I have a 30'x30'x20' tall, 8" cmu building. I am thinking these dimensions
would be acceptable without any control joints in walls and would like some
other opinions.




Mark D. Baker

Baker Engineering




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