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Old 01-24-2011, 01:29 PM   #1
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concrete retaining walls and footings


I am going to be putting in a concrete retaining wall around my front and side yard as there is a 3 ft slope from the front of my house to the end of the property line. On top of that I will be affixing a fence and levelling the yard. My question is this, do I need to put a footing under the concrete wall? As far as I know the ground is only dirt but has not been disturbed for years. I plan on making the forms for the wall 8 inches wide. Do you think this will be fine and not tend to lean or sink over time as I plan on living here for a long time.

thanks for any and all advice.

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Old 01-24-2011, 02:28 PM   #2
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Quote:
On top of that I will be affixing a fence and levelling the yard.
Ayuh,... Be careful Leveling the yard, you still need Pitch to move water away from the house....

And,... If the walls aren't built Below frost level,...
They'll just tip over when the frost lifts 'em....

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Old 01-24-2011, 06:46 PM   #3
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I suggest using segmental concrete block. Easier to work with than poured concrete, less expensive, and much more tolerant of ground movement. There are many styles to choose from, I recently put in about 40 feet of wall three feet high, easy project except for the digging. No footing required, and the face looks like stone.
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Old 01-24-2011, 08:22 PM   #4
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Try a Google Image search for "NMCA", "SRW", "block", "elevation", "details" for some decent initial info.
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Old 01-24-2011, 08:46 PM   #5
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It is NCMA and not "NMCA".

You cam also fo the major international product development/licensing sites (Allan Block, Anchor Wall Systems, Keystone and Versalok). The site has great technical support, directions and photos for applications that reflect the huge exposure they have everywhere.

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Old 01-24-2011, 10:30 PM   #6
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Keystone's KeyWall design software is pretty decent, also.
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Old 01-25-2011, 04:37 AM   #7
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If you are still going with concrete you must use a footer.

More importantly you should consult a soils engineer for the design. Spend a few hundred dollars up front may save you from having to do the entire project over again in a few years.
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Old 01-25-2011, 09:09 AM   #8
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ck local ' haven't the foggiest ' people, too ( bldg permits dept ) to see IF a permit's rqd,,, have 4' limit in atl & 1adjoining county sez 2' eng stamped dwgs are rqd, too more $

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