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Pouring a concrete slab for a portable building myself?

Posted on 8/6/13 at 11:23 am
Posted by DieSmilen
My Rubbermaid Desk
Member since Dec 2007
1733 posts
Posted on 8/6/13 at 11:23 am
I was hoping to save a little money by pouring a 10x12 slab myself. Does anyone have any insight or recommendations on things to do or not to do?

Thanks
Posted by FriendZone
Member since Jul 2013
667 posts
Posted on 8/6/13 at 11:26 am to
Rebar
This post was edited on 8/6/13 at 11:27 am
Posted by NYCAuburn
TD Platinum Membership/SECr Sheriff
Member since Feb 2011
57002 posts
Posted on 8/6/13 at 11:31 am to
rent a mixer,
Posted by JAB528
The Mexican Ocean
Member since Jun 2012
16870 posts
Posted on 8/6/13 at 11:31 am to
Make sure your pad is level and make sure your form is square. These seem like no brainers, but I see people mess this up all the time.
Posted by LSUballs
RayVegas LA
Member since Feb 2008
37761 posts
Posted on 8/6/13 at 11:32 am to
quote:

Rebar





Nah. I'd pour it 4" thick and reinforce with wire. Form it up, dig you about an 10" deep footing around your forms, back the truck up, dump it in and screed it with a 2 by Foe.
Posted by LSUtiger09
Member since Dec 2009
749 posts
Posted on 8/6/13 at 11:33 am to
If you have to ask, you probably shouldn't do it yourself.! Just saying.!
Posted by TemplarTheSaint
The Vatican
Member since Oct 2011
704 posts
Posted on 8/6/13 at 11:37 am to
quote:

Nah. I'd pour it 4" thick and reinforce with wire. Form it up, dig you about an 10" deep footing around your forms, back the truck up, dump it in and screed it with a 2 by Foe.


Stake the hell out of the outside of your form keeping the inside edge on a string line. A form "blow-out" while pouring is no fun.
Posted by JAB528
The Mexican Ocean
Member since Jun 2012
16870 posts
Posted on 8/6/13 at 11:38 am to
quote:

If you have to ask, you probably shouldn't do it yourself.! Just saying.!




You have to start somewhere. It's not exactly rocket science.
Posted by LSUballs
RayVegas LA
Member since Feb 2008
37761 posts
Posted on 8/6/13 at 11:39 am to
quote:

Stake the hell out of the outside of your form keeping the inside edge on a string line



Absolutely
Posted by CoastieGM
Member since Aug 2012
3185 posts
Posted on 8/6/13 at 11:54 am to
After pouring and smoothing, constantly go around tapping the form boards with a baby sledge hammer to get bubbles against the form boards to rise. This will help ensure smooth exposed sides of the slab.
Posted by Cracker
in a box
Member since Nov 2009
17718 posts
Posted on 8/6/13 at 12:03 pm to
You can do it
Posted by DonChowder
Sonoma County
Member since Dec 2012
9249 posts
Posted on 8/6/13 at 12:15 pm to
A 4" slab of those dimensions is a yard and a half. You can rent a mixer on a trailer with an already mixed batch that has been retarded for you. Get a big truck if your gonna do that though...heavy. And see if you can rent one of those industrial vibrators and a bull float.

Oh yeah...and all that stuff that the other guys were saying about forms...do it.
Posted by CoastieGM
Member since Aug 2012
3185 posts
Posted on 8/6/13 at 12:25 pm to
Dayum....pretty obvious that quite a few folks on this board have poured a slab before. Don't find that too many places.
Posted by Creamer
louisiana
Member since Jul 2010
2817 posts
Posted on 8/6/13 at 12:45 pm to
Go for it. Renting a mixer or a georgia buggy would be your best bet. You can get a truck to deliver a 1.5 yards though.

Let the milk rise to the top then screed with a 2x4, as was said before. Move it across the surface back and forth like a hacksaw. You may be able to pull that amount of wire mesh from jobsite scraps.
Posted by JAB528
The Mexican Ocean
Member since Jun 2012
16870 posts
Posted on 8/6/13 at 1:23 pm to
quote:

Dayum....pretty obvious that quite a few folks on this board have poured a slab before. Don't find that too many places.


I poured more slabs between the ages of 15-18 than I want to for the rest of my life.
Posted by CoastieGM
Member since Aug 2012
3185 posts
Posted on 8/6/13 at 1:30 pm to
quote:

I poured more slabs between the ages of 15-18 than I want to for the rest of my life.


I only helped with 2 slabs and one REALLY long driveway when I was a teen. Was enough, though. Only done a couple as an adult, and only because the "professionals" want way too damn much money.
Posted by mack the knife
EBR
Member since Oct 2012
4185 posts
Posted on 8/6/13 at 3:32 pm to
quote:

wire mesh from jobsite


i have 3/4 of a roll of 6"x6" 6 gauge w.w.f. left over from a job i just finished. i'll give it to you for 1/2 price of a full roll.
Posted by Creamer
louisiana
Member since Jul 2010
2817 posts
Posted on 8/6/13 at 3:55 pm to
I don't need it, but OP this is what you need for the slab.
Posted by eng08
Member since Jan 2013
5997 posts
Posted on 8/6/13 at 4:52 pm to
Do it at night bc this heat might crack it if it gets too hot.

Make sure you have a set retarder with this heat right now as well.

Try to make sure it doesn't slump too much (less than 6" is good). If its too thin of a mix it will probably crack later on. Having a lesser slump will make it more difficult to work with but strength will be much better.
Posted by mack the knife
EBR
Member since Oct 2012
4185 posts
Posted on 8/6/13 at 4:57 pm to
quote:

set retarder


i've got left over of that also
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