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Re: High lift grouting

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Doug-
Don't know if you're in UBC country but the definition of "Cleanout" in Section 2101 reads:
"CLEANOUT is an opening to the bottom of a grout space of sufficient size and spacing to allow removal of debris." The definition in the 2006 IBC is almost identical.

If there is no communication with adjacent cells without cleanouts, how can the debris removed?

Further, UBC Section 2104.6.1, par. 7 states: "Cleanouts shall be provided for all grout pours over 5 feet (1524 mm) in height."  The 2006 IBC refers to ACI 530 and 530.1 which I believe require cleanouts at every vertical reinforcing bar location and at a minimum horizontal spacing of 32 inches when the grout pour height exceeds 5 feet.
Regards,
Bill Cain, SE
Berkeley CA




-----Original Message-----
From: Doug Mayer
To: seaint(--nospam--at)seaint.org
Sent: Fri, 25 May 2007 10:54 am
Subject: RE: High lift grouting

Mark,
 
I agree, but my point is that I can’t find a statement supporting this in the code(s).
 
Thanks,
 
Doug Mayer, SE
Structural Engineer
 
TaylorTeter
Partnership
 
 
 

From: Mark E. Deardorff [mailto:mdeardorff(--nospam--at)burkett-wong.com]
Sent: Friday, May 25, 2007 10:40 AM
To: seaint(--nospam--at)seaint.org
Subject: RE: High lift grouting
 
How do they propose to remove debris from the three out of four cells that aren't open for inspection? Maybe I am wrong but I thought that is what "cleanouts" were for.
 
Mark E. Deardorff, S.E.
Structural Engineer
Burkett & Wong Engineers
3434 4th Ave
San Diego, CA 92103
P 619.299.5550
F 619.299.9934
 
 

From: Doug Mayer [mailto:doug.mayer(--nospam--at)taylorteter.com]
Sent: Friday, May 25, 2007 10:25 AM
To: seaint(--nospam--at)seaint.org
Subject: High lift grouting
List,
 
I have a CMU wall building in Washington (state) being built that has fully grouted walls and reinforcing at 8” o.c. each way.  The contractor wants to do high lift grouting in lieu of the low-lifts, which is fine with me.  However, the topic of cleanouts has become an issue and I’m not sure of the correct answer.  
 
They would like to do cleanouts at 32” o.c., but I know that older codes and the Concrete Masonry Association of California and Nevada specify that cleanouts are to occur at each vertical cell with reinforcing, or continuous special inspection is to be provided.  But, looking at the IBC 2003 and ACI 530-02 – the codes for this project – I can’t seem to find any reference or specification for cleanout requirements.  Any ideas?
 
Thanks for the help,
 
Doug Mayer, SE
Structural Engineer
 
TaylorTeter
Partnership
 
 
 

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