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Posted by burnselk on October 26, 2009, 11:14 am
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Is it not "standard practice" for contractors to extend retrofit rebar up
through the cinder blocks to and thru the sill/mud plate a couple of
inches when filling every other block wall with concrete to prevent
further leaning of a cinder block wall?
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Posted by on October 26, 2009, 11:33 am
On Mon, 26 Oct 2009 15:14:19 +0000,
catdogannie_at_yahoo_dot_com@foo.com (burnselk) wrote:
>-------------------------------------
>Is it not "standard practice" for contractors to extend retrofit rebar up
>through the cinder blocks to and thru the sill/mud plate a couple of
>inches when filling every other block wall with concrete to prevent
>further leaning of a cinder block wall?
I guess that depends on where you live. In Florida it is the law.
They "dowel" every corner, door or window opening and every 4' along a
running stretch of unbroken wall. That gets tied to the top 2 courses
of block that have horizontal reinforcing (4 #5s) and poured solid.
All the steel is lapped and tied.
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Posted by SteveB on October 26, 2009, 1:56 pm
> -------------------------------------
> Is it not "standard practice" for contractors to extend retrofit rebar up
> through the cinder blocks to and thru the sill/mud plate a couple of
> inches when filling every other block wall with concrete to prevent
> further leaning of a cinder block wall?
It is not "standard practice". It is just common sense, good workmanship,
and engineeringly correct. In some areas, it is law. For a contractor not
to do that shows he's sloppy. For him not to do that upon your request,
even if it is not locally required is reason for termination. Cost wise,
you're talking another twenty bucks or so materials. Otherwise, you have a
big heavy chunk sitting up there unsecured. What if a car hit it?
Earthquake? BIG wind, as in hurricane?
PLOP! Uh-oh.
MHO, How I'd Have It Done, YMMV
Steve
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Posted by Jim Elbrecht on October 26, 2009, 2:45 pm
On Mon, 26 Oct 2009 15:14:19 +0000,
catdogannie_at_yahoo_dot_com@foo.com (burnselk) wrote:
>Is it not "standard practice" for contractors to extend retrofit rebar up
>through the cinder blocks to and thru the sill/mud plate a couple of
>inches when filling every other block wall with concrete to prevent
>further leaning of a cinder block wall?
"extend retrofit rebar" "further leaning"?
Are you asking a contractor to *fix* your leaning wall by making it
stronger? and he's saying- "Tear it down and start over."?
In that case- he's right.
Jim
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Posted by aemeijers on October 26, 2009, 7:44 pm
burnselk wrote:
>
> -------------------------------------
>
> Is it not "standard practice" for contractors to extend retrofit rebar up
> through the cinder blocks to and thru the sill/mud plate a couple of
> inches when filling every other block wall with concrete to prevent
> further leaning of a cinder block wall?
>
By 'retrofit', do you mean repairing an existing wall? If the wall is
visibly leaning, the proper answer is to excavate the buried side, and
rebuild. Not try some half-ass in-place repair, that even if it doesn't
collapse, would in all odds leak from the same hydrostatic pressure or
hill slump that broke the wall in the first place. Repairing it the
right way is expensive and labor-intensive, but not technically
complicated. Support the structure above with pilings, temporary wall,
or cribbing, expose old wall, demo and build back. I recall one house as
a kid where a sudden rainstorm took out a section of basement wall on an
unfinished house, and my old man had to pay a week's rent on a crane to
hold that end of the house up, using a steel cable dropped through house
to a hunk of steel in basement slung under a dozen joists. They simply
didn't have time to do it any other way, because the water was rising
fast in the backfill pit. Needless to say, that killed any profit on
that house. On another house, I was cleaning the basement so they could
pour the slab, while they were dumping the sand in the garage so that
slab could be poured. I saw the basement wall by the garage flexing.
That is about the quickest I ever climbed out of a basement pit up a
kickboard in my life- I was sure the whole damn place was gonna be on
top of me. All the grownups on the site were pissed, of course, but not
terribly worried.
On a new wall, especially an above-ground one, local quake or hurricane
code may require all sorts of rebar, horizontal 'Z' strips every 2nd or
3rd course, extra mudded-in J bolts to tie sill plate down, and filled
pockets every X feet. Your building designer, competent local mason, or
code office, should all know the local code and custom.
--
aem sends...
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>Is it not "standard practice" for contractors to extend retrofit rebar up
>through the cinder blocks to and thru the sill/mud plate a couple of
>inches when filling every other block wall with concrete to prevent
>further leaning of a cinder block wall?