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Posted by Wes Stewart on July 12, 2005, 12:54 pm
On 12 Jul 2005 11:07:12 -0700, dbuckley@mail.com wrote:
>I'm building a 24 x 28 garage/shop and would like to have more than an
>8 foot ceiling height in it. It's going to be a 4" monolithic pad and
>I was thinking of laying 1 or 2 courses of 8" concrete block and
>building with standard studs to keep from doing lots of cutting. One
>corner of the pad will be about 16" - 20" below grade, but I won't be
>backfilling around it, so I think I will be ok.
>
>Some questions...
>1. Any issues with this approach for increased height? Will put j
>bolts in block and pressure treated sil plate.
The main issue I have is why. If you're intent on a CMU stem wall,
why not just pour a standard footing and build up from there? If
you're intent on the monopour then use longer studs. You don't say
-how much- higher than 8' you want. If it's say 10', buy 12 footers
and whack them off. You'll need the offcuts for blocking anyway.
>
>2. When running the electrical conduit (stand alone garage), would you
>run the underground conduit through the floor/block so it goes straight
>up the inside walls?
No. My house is CMU/slab on grade and I hate having wiring and
plumbing buried in concrete. I'm doing a bath remodel and have to
change some plumbing in an exterior wall. What a PITA.
>
>3. If I am using 1 or 2 courses of block, is there a recommended way
>of tilting up the stick framed walls onto the block/sill plate?
Depends on how much muscle you have. I built my garage mostly by
myself. 2 X 6 X 12' DF studs with the stem about 6" above the slab.
I'm a ham radio operator and had some sections of steel radio tower
around that I used as gin poles for some lifting when working alone.
(I used the same technique to lift the 30' I-joists and the 8 X 12 X
16' garage door headers) Otherwise my neighbor and I were able to tip
up 12' wall sections but it's tricky. A couple of more hands would
make it -much- easier. Nail on the braces with one nail before
lifting so that you only have to nail off the bottom end when the wall
is plumb.
>
>4. any general suggestion/things to look out for?
Make the slab 2" thicker and use some rebar.
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