New Building

[Gregory OConnor]

Howard, like blair said slow cure is key. You can spray a curing
membrane over the slab after it is finished. I demo concrete and get
to look at the underside of failed concrete. thickness is not as
important as subgrade prep. One thing overlooked by the crew pouring
the concrete is lines in the sand under the slab. often the subgrade
is raked smooth but the rebar(reinforcement rod) makes a imprint in
the sand that has the same effect as a joint atop of the slab. The
slab will crack at the imprint all the way up to the surface. One
other point overlooked is keeping the rebar center or atleast 2
inches off the subgrade. I would have the finishers Green saw cut
joints on the slab inplace of tool finishing joints. Tool joints are
wide and in the way of creepers and rollaway tool boxes. Fiber works
great but it takes awhile for the fuzz to sweep off the surface. But
if it does crack and you have rebar it wont move up or apart.

Gregory O'Connor
94pt40
Cracked concrete is Beautiful $

--- In WanderlodgeForum@yahoogroups.com, Blair wrote:
>
> At 03:05 PM 11/18/2005, you wrote:
> >I'm getting ready to build a storage building for my 86 8V92 PT40.
The
> >previous owner had kept it in a barn on his farm. I would
appreciate
> >some advise on the concrete pad. I plan on building a 16'x56'
building
> >with 14'x14' roll up doors on each end. I had one builder say to
> >compact the dirt well
>
> Then lay down a layer of black plastic to prevent moisture lost
while the
> 'cret is hardening.
>
> >and pour 4" of 2000# concrete with fiber
> No way.... he's nuts and
> you can't get a good finish with fiber. leave it out
>
> > the
> >other says I need to pour 6" of 3000# concrete with wire.
>
> Six inches with # 6 or #8 rebar on a minimum of 16" on center. You
could
> add the wire
> Your mix should be a minimum of six sack with 3/4 minimum rock.
> The day after your pour, have them "Cut" the shrinkage lines.
>
> Blair in Oregon
>
> >I also plan on putting in a 42" wide by 42" deep by 12' long
service
> >pit.
> >I would appreciate your imput.
> >Howard Truitt
> >Camilla, Ga.
> >86 8V92 PT40
> >
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