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RE: Masonry wall construction

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I agree that partially grouted masonry is a good way to reduce lateral loads.

I noted that the "contractor" complained about the special inspection costs. Was he/she paying for it?

Mark E. Deardorff, SE
Deardorff & Deardorff, Inc.
Ramona, CA 92065

> -----Original Message-----
> From: Bill Allen [mailto:Bill(--nospam--at)]
> Sent: Tuesday, January 11, 2000 1:22 PM
> To: seaint(--nospam--at)
> Subject: RE: Masonry wall construction
> Based on my experience:
> I design partially grouted walls all the time. Particularly 
> with the new
> code, I have gone to higher strength block grouted cells 
> further apart to
> reduce the load on the diaphragms. The last wall section I 
> designed was
> medium weight block, F'm=2,500 psi, #6 bars at 32", lightweight grout
> f'c=3,200 psi. Granted, this was a tall wall. The *only* 
> complaint I got
> from the contractor (other than the Special Inspection 
> charges) was with
> regards to the high strength, light weight grout. Solid grout 
> walls put way
> too much load on a sub diaphragm, but I am referring to a 
> wood diaphragm.
> Your situation may be different.