How thick should my concrete slab be for a shed? | Page 2 | TigerDroppings.com

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SBC
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re: How thick should my concrete slab be for a shed?


4





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junkfunky
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Member since Jan 2011
14251 posts

re: How thick should my concrete slab be for a shed?


Any somewhat heavy equipment? If not 4" thick with either fiber reinforcing or 6x6 W1.4-W1.4 mesh.





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bbqguy
LSU Fan
uppa LA.
Member since Jul 2006
305 posts

re: How thick should my concrete slab be for a shed?


quote:

No tractor or anything that heavy. The riding lawnmower would be the heaviest thing. Just making sure 4 would be enough. I'm sure the concrete company will tell me 6.


4 inches is plenty. Footings around the outside for stability is recommended. Also make sure you have your reinforcing mesh up off the bottom of the slab. It needs to be in the middle of the concrete to do it's job.






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rodnreel
Member since Apr 2011
191 posts

re: How thick should my concrete slab be for a shed?


Make sure you remove all the grass including the roots and as others have said make a footing. If using a 2 X 4 for forms the 4 is less than 4".





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rcrawfish1
LSU Fan
Louisiana
Member since Nov 2009
462 posts

re: How thick should my concrete slab be for a shed?


Don't know if anyone else told you this or not but digging a little footing/stiffener around the perimeter would be good. Make it 12" wide by 8" to 12" deep. Or shovel wide by shovel deep. And put 2 1/2" rebars in the middle of it about 6 inches apart and 4"-6" above the bottom of the footing. Dont forget some wire mesh in the slab and 4" is plenty thick.





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Tigerpaw123
USA Fan
Louisiana
Member since Mar 2007
9344 posts

re: How thick should my concrete slab be for a shed?


quote:

Also make sure you have your reinforcing mesh up off the bottom of the slab. It needs to be in the middle of the concrete to do it's job.


+1, if your steel is just laying on the ground you just wasted money






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ashy larry
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Marcy Projects
Member since Mar 2010
3669 posts

re: How thick should my concrete slab be for a shed?


quote:

+1, if your steel is just laying on the ground you just wasted money



it's amazing how common this is. I recently helped a friend with a remodel of his house. He saw cut the slab to add some footings and we found the mesh laying completely under the concrete slab.






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Ace Midnight
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re: How thick should my concrete slab be for a shed?


quote:

it's amazing how common this is. I recently helped a friend with a remodel of his house. He saw cut the slab to add some footings and we found the mesh laying completely under the concrete slab.


People are too lazy to tie rebar.

That's why you must have inspections, tough ones, at every critical phase, before anything is covered up. It costs a little more and requires a little more effort, but it pays off down the line.






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noonan
USA Fan
Nassau Bay, TX
Member since Aug 2005
27590 posts

re: How thick should my concrete slab be for a shed?


It depends on the slab.

Our standard foundations for transformers in high voltage substations had the reinforcing steel 3 inches from the bottom.

If memory serves, I would say that most were 3 inches from the bottom on foundations as shallow as 9 inches think. It's been a couple years since I've designed any foundations though.



This post was edited on 6/18 at 12:08 pm


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DownshiftAndFloorIt
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The devil dreams on an idle horse
Member since Jan 2011
41060 posts

re: How thick should my concrete slab be for a shed?


Love that damn movie





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k wilk
LSU Fan
Member since Nov 2008
562 posts

re: How thick should my concrete slab be for a shed?


I assume that you will have 2 separate slabs, since you said you're getting a couple of the stand alone sheds. However, if you are pouring monolithically, you should put in a control joint every 9-10 feet for a slab that is 3"-4" thick.





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Rocky Marciano
Member since May 2013
32 posts

re: How thick should my concrete slab be for a shed?


I appreciate all of the good advice from everybody. I will definitely put these suggestions to use.





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CaptainJ47
Hawaii Fan
Gonzales
Member since Nov 2007
2898 posts

re: How thick should my concrete slab be for a shed?


Pay a few bucks extra per yard and get it with fiber





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theBeard
LSU Fan
Golf Tech Board
Member since Jul 2011
6212 posts

re: How thick should my concrete slab be for a shed?


quote:

Our standard foundations for transformers in high voltage substations


they are also on piles or drilled shafts.






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theBeard
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Golf Tech Board
Member since Jul 2011
6212 posts

re: How thick should my concrete slab be for a shed?


do you have to pull a city permit for this work?





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tiger94gop
LSU Fan
GEISMAR
Member since Nov 2004
1788 posts

re: How thick should my concrete slab be for a shed?


Dig a 8-10" footing all around, you won't regret it. Also, put in a 1-1 1/4" pvc 90 just incase you want to add power to it. Way easier now. Buy some cut rebar bundle and use that to support your wire. You can also put 1/4-3/8 rebar in the footings. You don't need to do this if not alot of weight, but a footing will ensure your concrete is uniform if your ground isn't. Also make an opening that can be removed during puring for an entrance ramp. Things that are not very costly, but easier prior to pour.





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iglass
Alabama Fan
North Alabama
Member since Apr 2012
890 posts

re: How thick should my concrete slab be for a shed?


Great suggestions already, but I'd like to add... MORE STEEL.

1/2" rebar is cheap. Really cheap for what you get. I will never pour another slab that does not have at least one row of rebar around the perimeter, more rebar on2-3' centers, and something that is overlooked - a 4-6' long piece of rebar pointing from the corners to the center of the slab. This prevents corners from breaking off.

Finally, if you ever join two slabs, always drill horizontal holes and slip in some spikes or small sections of rebar to keep the new or old slab from settling compared to the other one.

Just my two cents worth.






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DaSaltyTiger
LSU Fan
Alexandria/Pineville, LA area
Member since Dec 2004
4689 posts

re: How thick should my concrete slab be for a shed?


I would do the six inches with wire mesh and footings. Overkill now, but you never know when you might have a change of heart and want something else on that slab.





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jbgarner2010
LSU Fan
Shreveport, LA
Member since Aug 2011
3301 posts

re: How thick should my concrete slab be for a shed?


If its just for your law mower or 4 wheeler, 4 inches is good. If you wanna have a truck, boat, camper, etc, might wanna bump it to 6





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Carson123987
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re: How thick should my concrete slab be for a shed?


6





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