sburns
Well-known member
I agree with Dad on this, just do the concrete pad, dunno why you need gravel, unless this is just filler of some sort.
(I think you might be over engineering this)
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Enough of COVID...what are you doing to the house?
- Thread starter mimico_polak
- Start date
(I think you might be over engineering this)
Thanks. Gravel is to ensure there is proper drainage under the slab.
2" of concrete isn't thick enough.. should be 4".
Mad Mike
Well-known member
Your pad is your foundation, think it thru and do it right. you need more excavation and a percolating base (6" deep, backfill with 4" compacted gravel) then 3" thick pad. I'd also lay in a sheet of mesh.
You can economize somewhat by using pavers over 4" of tamped screening. 24 24"x30" pavers covers 10'x12' nicely. No mixing, no mesh and you have a surface that can be relevelled if needed. 66 bags of concrete and mesh will run you $500+, pavers about $300 (could also be free... lots of people dump pavers on Kijiji for nothing).
That's what I was thinking. I hold little faith in 2" surviving long. It probably could with a well prepared base but the point of concrete is permanence so I wouldn't go less than 3".
Mad Mike
Well-known member
I'd just use 6x6 PT for this, lay it on the gravel drive a couple of rebars thru to stabilize. Easy to build, easy to relevel fix, and will outlast MP
A 2X4 form is 3 1/2" which is OK. 2" not so much.
The concrete floor was a big part of my shed cost 30 years ago and I have never regretted it.
G1RTHQU8K3
Active member
Update on the storage room. I still need to paint and install the doors and handles, and I'm thinking of covering the bench top in Ash wood.
Otherwise, you can see my wife has begun filling it lol.
Otherwise, you can see my wife has begun filling it lol.
I’m a big concrete shed floor fan , the patio slab idea is a close second . I do support anything that keeps critters out from under. Nieghbour did the patio slabs then tapconned a pressure treated ply floor onto the slabs . He likes dropping tools on plywood not cement. Used patio stones are almost always available somewhere for free
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48Connor
Well-known member
My dad is building an 8x13 shed in the backyard. He spent all winter trying to convince me that building a base frame out of cedar 6x6's and filling the voids with gravel would be a good base and stop animals from living underneath it.
My response was "you live in a $1mm + house and you want to cheap out a grand or two on concrete for a shed?"
Must have got to him cause I helped him level the forms for the pad on Monday
My response was "you live in a $1mm + house and you want to cheap out a grand or two on concrete for a shed?"
Must have got to him cause I helped him level the forms for the pad on Monday
Burrowing animals are happy to live under a concrete pads. A deep gravel base helps to make this a PITA for them but still not 100%--nothing is other than vigilance or maybe some sort of vigilantism?
The solutions are either cruel or expensive.
12" pad on 12 or so sonatubes should take care of this issue
Sent from the future
What are you, OPG? Might as well add a sump pit with a peerless pump just in case.
With enough concrete and digging one might as well put in a full basement. Does the code say anything about a shed basement?
It's here....
I'm going to get my spinach...
I'm going to get my spinach...
that looks fun, I have to get 20 yards or so soon for my parking area thinking crushed limestone
The in-laws added some gravel to the driveway at their cottage. I think they must have requested the sharpest rock possible. Probably crushed granite. I've grown up with a gravel driveway and it is nothing like the pain of the stuff they used.
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