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Ask aldeer - block wall garage ?
#2711625
01/19/19 08:30 PM
01/19/19 08:30 PM
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Joined: Jun 2014
Posts: 6,889 Shelby Co, AL
CatHeadBiscuit
OP
14 point
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OP
14 point
Joined: Jun 2014
Posts: 6,889
Shelby Co, AL
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I am thinking of building a garage on an existing parking area of our driveway. Is it kosher to use like the back corner of the driveway to build a garage? I am thinking something like with a 3’ tall block wall then 8’ on top of that for an 11’ inside hieght. I doubt this is a monolithic slab area prolly gonna be just 4” thick everywhere. Wasn’t around for the house building. 24’ x 24’ approximate size. Advice and guidance requested and appreciated
"Arguing on the internet is like playing chess with a pigeon. You may be good at chess, but the pigeon is just going to knock all the pieces down, take a crap on the table, and strut around like its victorious."--Anonymous
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Re: Ask aldeer - block wall garage ?
[Re: Dixiepatriot]
#2711644
01/19/19 08:38 PM
01/19/19 08:38 PM
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Joined: Jul 2005
Posts: 19,087 Chelsea, AL
straycat
Old Mossy Horns
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Old Mossy Horns
Joined: Jul 2005
Posts: 19,087
Chelsea, AL
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You need a footing under a load bearing wall X 2
"The grass withers, the flower fades, But the word of our God stands forever." Isaiah 40:8
"Neither the wisest constitution nor the wisest laws will secure the liberty and happiness of a people whose manners are universally corrupt.� Samuel Adams
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Re: Ask aldeer - block wall garage ?
[Re: CatHeadBiscuit]
#2711654
01/19/19 08:45 PM
01/19/19 08:45 PM
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Joined: Jun 2014
Posts: 6,889 Shelby Co, AL
CatHeadBiscuit
OP
14 point
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OP
14 point
Joined: Jun 2014
Posts: 6,889
Shelby Co, AL
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So would need to cut out the pad at the perimeter of building and dig out and pour 12” wide by 18” deep of concrete ? Might be better just to leave pad asis and put in a proper concrete floor to the side of it. The driveway pad isn’t pool troweled like a proper garage floor.
Last edited by CatHeadBiscuit; 01/19/19 08:48 PM.
"Arguing on the internet is like playing chess with a pigeon. You may be good at chess, but the pigeon is just going to knock all the pieces down, take a crap on the table, and strut around like its victorious."--Anonymous
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Re: Ask aldeer - block wall garage ?
[Re: Dixiepatriot]
#2711936
01/20/19 01:25 AM
01/20/19 01:25 AM
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Joined: Jun 2017
Posts: 6,309 Alabama
Jakethesnake
The Flippin’ Idiot That Could Care Less
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The Flippin’ Idiot That Could Care Less
Joined: Jun 2017
Posts: 6,309
Alabama
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18” deep would be a little excessive but on the other hand you’ll probably have to pay a short charge for concrete so might as well pour it thick and a little wider. This.
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Re: Ask aldeer - block wall garage ?
[Re: straycat]
#2711964
01/20/19 07:04 AM
01/20/19 07:04 AM
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Joined: Dec 2013
Posts: 22,662 Lickskillet, AL
Irishguy
a.k.a. Dingle Johnson
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a.k.a. Dingle Johnson
Joined: Dec 2013
Posts: 22,662
Lickskillet, AL
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You need a footing under a load bearing wall X 2 This^^^ times ten. It's really not that hard to run a quick calculation of the contributory area (Roof dead load + Snow load) x S.F. then add the weight of the C.M.U. walls to that and actually see what your loads are going to be. Then, once you know that you can size the perimeter foundations accordingly. This includes factoring in the bearing capacity of the soil in your particular area. There are numerous charts online for find out what the bearing capacity of your soil is per S.F. You're going to spend a considerable amount of time and money and effort building this thing, so that last thing you want is for it to start sinking and get huge cracks in the concrete driveway. Speaking of the drive way... My guess is that it may not be a reinforced slab. Which is not good either.
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Re: Ask aldeer - block wall garage ?
[Re: Irishguy]
#2712020
01/20/19 08:51 AM
01/20/19 08:51 AM
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Joined: Oct 2008
Posts: 30,910 Clanton, AL
Out back
Grumpy Old Man
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Grumpy Old Man
Joined: Oct 2008
Posts: 30,910
Clanton, AL
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It's really not that hard to run a quick calculation of the contributory area (Roof dead load + Snow load) x S.F. then add the weight of the C.M.U. walls to that and actually see what your loads are going to be. Then, once you know that you can size the perimeter foundations accordingly. This includes factoring in the bearing capacity of the soil in your particular area.
All that math... And yet there's 200 year old barns, still sitting on rock piles, all over the country. 😉
My opinions and comments are my own. They do not reflect the position or political opinions of Aldeer or any of the Aldeer administration.
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Re: Ask aldeer - block wall garage ?
[Re: Out back]
#2712044
01/20/19 09:30 AM
01/20/19 09:30 AM
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Joined: Dec 2013
Posts: 22,662 Lickskillet, AL
Irishguy
a.k.a. Dingle Johnson
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a.k.a. Dingle Johnson
Joined: Dec 2013
Posts: 22,662
Lickskillet, AL
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It's really not that hard to run a quick calculation of the contributory area (Roof dead load + Snow load) x S.F. then add the weight of the C.M.U. walls to that and actually see what your loads are going to be. Then, once you know that you can size the perimeter foundations accordingly. This includes factoring in the bearing capacity of the soil in your particular area.
All that math... And yet there's 200 year old barns, still sitting on rock piles, all over the country. 😉 True. But they're not level. And they're not built on a driveway slab.
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Re: Ask aldeer - block wall garage ?
[Re: Dixiepatriot]
#2712140
01/20/19 11:25 AM
01/20/19 11:25 AM
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Joined: Jul 2005
Posts: 19,087 Chelsea, AL
straycat
Old Mossy Horns
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Old Mossy Horns
Joined: Jul 2005
Posts: 19,087
Chelsea, AL
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18” deep would be a little excessive but on the other hand you’ll probably have to pay a short charge for concrete so might as well pour it thick and a little wider. Agreed again. Just make sure you put the footings on good native soil or properly compacted fill if any part of existing slab is on fill. Attention to good building practices on a retrofit where you are introducing new loads will serve you well in the long run.
"The grass withers, the flower fades, But the word of our God stands forever." Isaiah 40:8
"Neither the wisest constitution nor the wisest laws will secure the liberty and happiness of a people whose manners are universally corrupt.� Samuel Adams
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Re: Ask aldeer - block wall garage ?
[Re: Out back]
#2712145
01/20/19 11:29 AM
01/20/19 11:29 AM
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Joined: Jul 2005
Posts: 19,087 Chelsea, AL
straycat
Old Mossy Horns
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Old Mossy Horns
Joined: Jul 2005
Posts: 19,087
Chelsea, AL
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It's really not that hard to run a quick calculation of the contributory area (Roof dead load + Snow load) x S.F. then add the weight of the C.M.U. walls to that and actually see what your loads are going to be. Then, once you know that you can size the perimeter foundations accordingly. This includes factoring in the bearing capacity of the soil in your particular area.
All that math... And yet there's 200 year old barns, still sitting on rock piles, all over the country. 😉 Good point. There are 80 year old houses on cut cedar stumps all over Walker County too. Most of them have character swags now and the interior floors have more undulations than the greens at Augusta
Last edited by straycat; 01/20/19 11:30 AM.
"The grass withers, the flower fades, But the word of our God stands forever." Isaiah 40:8
"Neither the wisest constitution nor the wisest laws will secure the liberty and happiness of a people whose manners are universally corrupt.� Samuel Adams
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Re: Ask aldeer - block wall garage ?
[Re: straycat]
#2712169
01/20/19 11:47 AM
01/20/19 11:47 AM
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Joined: Sep 2012
Posts: 18,020 North AL
AU338MAG
Old Mossy Horns
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Old Mossy Horns
Joined: Sep 2012
Posts: 18,020
North AL
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18” deep would be a little excessive but on the other hand you’ll probably have to pay a short charge for concrete so might as well pour it thick and a little wider. Agreed again. Just make sure you put the footings on good native soil or properly compacted fill if any part of existing slab is on fill. Attention to good building practices on a retrofit where you are introducing new loads will serve you well in the long run. In Alabama, you need the top of the footing to be 12" below the finished grade. Like straycat and others said, do not build it on the driveway. Driveways are often placed on fill material excavated from the house foundation and your garage needs to be on firm native soil or compacted fill. Inspectors sometimes carry a water meter key which has been sharpened to a point on the end to check foundation excavations.
Dying ain't much of a living boy...Josey Wales
Molon Labe
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Re: Ask aldeer - block wall garage ?
[Re: straycat]
#2712182
01/20/19 12:06 PM
01/20/19 12:06 PM
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Joined: Oct 2008
Posts: 30,910 Clanton, AL
Out back
Grumpy Old Man
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Grumpy Old Man
Joined: Oct 2008
Posts: 30,910
Clanton, AL
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It's really not that hard to run a quick calculation of the contributory area (Roof dead load + Snow load) x S.F. then add the weight of the C.M.U. walls to that and actually see what your loads are going to be. Then, once you know that you can size the perimeter foundations accordingly. This includes factoring in the bearing capacity of the soil in your particular area.
All that math... And yet there's 200 year old barns, still sitting on rock piles, all over the country. 😉 Good point. There are 80 year old houses on cut cedar stumps all over Walker County too. Most of them have character swags now and the interior floors have more undulations than the greens at Augusta I wouldn't advocate constructing on rock piles. But I'm always amused by the amount of formulating to dig a ditch with a backhoe. 😆 Reminds me of military protocol; measure it with a micrometer, mark it with a chalk stick and cut it with an ax!
My opinions and comments are my own. They do not reflect the position or political opinions of Aldeer or any of the Aldeer administration.
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