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RE: Deep Masonry Beams

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Deflection may be the limiting factor.  Normally I would limit it to L/600,
but the amount the storefront can accommodate will probably limit it to even
less.  I would also follow deep beam procedure.  PCA put out a pamphlet long
ago for flexural stresses, resultant tension, and shear stress.

	-----Original Message-----
	From:	Michael D Zaitz [SMTP:mzaitz(--nospam--at)surfsouth.com]
	Sent:	Monday, October 26, 1998 1:01 PM
	To:	seaint(--nospam--at)seaint.org
	Subject:	Deep Masonry Beams

	Does anyone have any experience in using a masonry lintel to span
31' 
	over a window?  We have a client who is building a convience store
and 
	wants a 31' foot opening in the masonry wall (split face load
baering CMU 
	8" or 12").  We have approximately 6 feet above the opening to joist

	bearing.  Is there any problems with a 6 foot deep masonry beam?  I
know 
	in concrete there are special checks for deep beams for both shear
and 
	flexure but the ACI 530 code does not address this that I have
found.  
	Any concerns or pitfalls?  We are planning on a control joint near
the 
	end of the opening.

	Thanks,

	Mike Zaitz