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Land Preparation
There's a new one on me... what's a "rat wall"?
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Land Preparation
A 24" deep concrete wall under the perimeter of a slab
that prevents burrowing animals from getting under a
slab and destroying it. You probably have them there
but with a different name. In my area it would be more
correct to call them "woodchuck walls".
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Land Preparation
5 years ago I had a 30X45' pad made for a shed. I had a 70hp Case w/loader but had my neighbor come instead with his big equip. He scraped out 12" and then rolled 3" limestone rock. Then he rolled 3/4" rock. I thought the roller was going to vibrate my house apart! This whole thing took him 4 hours. Time is money! lance
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Thanks for the "rat wall" definition. I really have never done any true slab contruction because I've always had a "frost wall" foundation around the perimeter. In my area the frost wall has to go down 48" so I automatically have a "rat wall". I know the problem though because the last house I bought had a second garage that was built on a piered foundation and the chipmunks kept getting under the slab floor. They would build caverns in the sand there. Finally got rid of the problem (but that's a different story) with minimal settling and damage to the floor.
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This "rat wall" sounds almost like a footer. By the time one was done with that, it might be better to pour a footer and build from stick. I do have rodents. No rats that I am aware of, but plenty of mice, chipmonks and ground hogs. I think paying close attention to the perimeter and the careful use of "oh not that" poisons if something appears would suffice (I hope!).
PS...also plenty of cats around here.
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