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Old 06-06-2008, 07:30 PM   #1
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I am building two additions to my house and my contractor has built the forms to pour the footings and walls at the same time. I have not had much to do with construction in a long time, but I have always thought the footings are poured first with a keyway cut into them and then once they have hardened the walls then built on top. I am including two pictures so everyone can see what I am talking about. The footing is 16 wide by 8 deep and is formed with 2x8s and 1x8 walls built on top for the vertical part of the wall, incase it is hard to tell from the pictures. I want to make sure my contractor is doing this the right way.

Tanks for your help,
Jeff
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Old 06-06-2008, 08:22 PM   #2
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It is very strange to pour a conventional spread footing and foundation wall as a monolithic pour. But, it is equally strange to see someone form up the walls using wood.

I'm trying to think of a valid reason that this method would be a problem, and I really can't. There won't be a keyway, but the keyway is really a means of dealing with the cold joint between the wall and the footing since a bond doesn't actually occur.

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Old 06-06-2008, 08:23 PM   #3
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Maybe I'm not seeing them, but where are the vertical rebars???
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Old 06-06-2008, 11:47 PM   #4
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yes there are, about every five feet
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Old 06-07-2008, 06:06 PM   #5
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Might want to check on that. Here, code requires vertical bars no farther apart than 4'. If you're filling both sides of the wall, I wouldn't sweat it. If it is unbalanced fill, I'd put more verticals in it. Rebar is not that expensive compared to foundation repairs!
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Old 06-07-2008, 09:44 PM   #6
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What do you mean by filling both sides of the wall?

Thanks for your help
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Old 06-08-2008, 01:37 AM   #7
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Are you pushing dirt up against the outside of the wall and the inside of the wall, or are you just backfilling the outside?

If you're just backfilling the outside, you have what's called unbalanced fill. No big deal, provided the wall is properly reinforced and the floor system of the house is correctly anchored to the foudation.

If you're filling both sides of the wall with nearly equal amounts of dirt, there will be a lot less lateral forces excerted on the wall. This means that you can get away with a lot less rebar in most cases.
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Old 06-08-2008, 01:50 PM   #8
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Aren't there inspections for this? When I built the kitchen addition there were individual inspections for the excavation, the footing and the foundation walls.
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Old 06-08-2008, 04:27 PM   #9
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Yes, this would require inspections in just about all cities. Some counties and rural jurisdictions don't require permits or inspections.

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