Question Regarding Concrete Slab

TennesseeBrian

I am building a detached garage and asked the concrete contractor to pour a separate footers from the slab so that I can have the brick start below the ground so that it will match my house. He agreed to do that, but in pouring the footers first, which will end up having the bricks laid on them, there are places where I only have 3.5 inches of footer since the slab was poured. Part of this is due to form boards giving in one corner when the concrete for the garage floor was poured. The actual pour in that corner is off by approximately 2", but I can correct for that with 6" walls on that side. Is it practical for the contractor to saw through 16" of concrete to square up the slab?

However, there are several other places with only 5" clearance from the slab. Since brick are almost 4" thick and I will need to put on 1/2 inch plywood on the outside walls then have "some" space between the playwood and the brick, how much room is normally between the plywood sheeting and the back of the brick? Also, with so little footer available in part of perimeter, does the entire brick need to sit on the footer? If it does, do you have a suggestion of the "best" way to pour the additional footer width so that it will hold up? I'm not sure how he got off so much on his measurements. I'm trying to find a way to work with him but get the results that I expect. Thanks in advance.

Brian in TN

Vinny

Brian, you should consider reposting or copy posting(if thats even possible) to the masonry forum.

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Vabuilder

Brian, typically there is about 1" between the brick and the sheathing on the wall. if the brick is just for a skirt which is usually less than 3 or 4 feet I wouldn't worry about having the entire brick on the footing, if it's a whole wall then you may have an issue. you could alway dig the footing a bit wider (where the brick sits), drill the existing footer (on the side), install rebar "pins" and pour and additional 2 or 3 inches of footer.

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Chris Johnson

In the area where you need additional support for the brick you can also consider attaching an angle iron (6x6) and bolt it to the side of the slab. 1" clearance is generally required behind the brick. Why are you burying brick? Brick should start 6" min. above finished grade.

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TennesseeBrian

Thanks for the comments. In Tennessee, brick always is laid below the ground to enhance the apprearance of the house. I gather from discussion on here that there is the 6" rule in some locations. I will have to dig out around the existing footers to see how difficult drilling into the old footer and pouring a few extra inches will be. Fortunately, of the total building perimeter of 132', there should be no more than 20' or so affected.

cleveman

You need 1/2" between the brick and the siding. If you can have more than 1/2 of the brick on the ledge, it will stay. Use a lot of wall ties. The angle iron idea is common. Bolt it in place with galvanized or stainless or something longlasting.