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Old 02-28-2012, 06:42 PM   #1
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How to pour a replacement piece of footing?


How should I pour a replacement piece of concrete footing at the corner of a concrete slab with shrinkage in mind?

Our home is 40 years old and built on a concrete slab. The ground slopes slightly from front to back. The shoddy contractor poured a concrete footing on top of the ground at the back of the house to help support the back end of the slab. The footing is 13" wide x 7" high and extends the length of the back of the concrete slab. The back end of the slab rests on the footing with about 4" of the footing sticking out.

A 20" piece of the footing at the left corner cracked off and was rocking back & forth so I removed it. The piece is about 13" wide x 7" high x 20" long.

I want to replace the piece using Quickrete. I can build a form to hold the concrete when i pour it but am wondering about the concrete shrinking as it dries and therefore not offering any support for the slab at the corner. It's not that critical since the slab is resting on the dirt and on the remainder of the footing but I want the replacement piece to help support the corner as much as possible.

Any suggestions on how to do the job?
Sky

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Old 02-29-2012, 07:10 AM   #2
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How to pour a replacement piece of footing?


There must not be any rebar in the footing I guess.
I would drill into the existing footing and get some rebar pins in there to keep separation from the existing to the new to a minimum.
Concrete doesn't shrink enough to be a concern, either.

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Old 02-29-2012, 12:51 PM   #3
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How to pour a replacement piece of footing?


Quote:
Originally Posted by titanoman View Post
There must not be any rebar in the footing I guess.
I would drill into the existing footing and get some rebar pins in there to keep separation from the existing to the new to a minimum.
Concrete doesn't shrink enough to be a concern, either.
Sounds like good advice and I'll follow it.
Thanks,
HRG
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