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RE: Nonshrink Grout Thickness

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Five Star Products has a manual on grouting that recommends "a minimum of
two inches clearance for plates less than three feet wide" for foundation
plates. They say that grout can be extended beyond 3-inches in depth using
pea gravel and with the grout manufacturer's approval. 

(As far as minimums go, I usually use 1-1/2" for typical column base plates
and sometimes 1" for small plates. Less than 1" makes it harder to place and

William C. Sherman, PE 
(Bill Sherman) 
CDM, Denver, CO
Phone: 303-298-1311
Fax: 303-293-8236
email: shermanwc(--nospam--at)

> -----Original Message-----
> From: richard lewis [mailto:rlewistx(--nospam--at)] 
> Sent: Tuesday, August 17, 2004 2:13 PM
> To: seaint(--nospam--at)
> Subject: Nonshrink Grout Thickness
> What is a reasonable maximum thickness of nonshrink grout 
> below a column
> baseplate?   I am detailing a column base fro a steel pipe column that
> supports steel roof beams in an existing building.  They are 
> removing a CMU bearing wall and supporting the wood framed 
> roof with steel framing. 
> The roof slopes slightly.  I was thinking of making a detail 
> where the column lengths are the same and the slack is taken 
> up in the grout under the base plate.  I would ask for steel 
> shims to set the column in place and then grout it.
> Thanks for your help.
> Rich

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