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Old 09-17-2017, 03:22 PM
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Bender Bender is offline
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Default How much road mix under concrete?

Do you think 6 inches of road mix under concrete is better than 4 inches?
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Old 09-17-2017, 04:50 PM
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Quote:
Originally Posted by Bender View Post
Do you think 6 inches of road mix under concrete is better than 4 inches?
Depends. What is the condition of the ground under the road mix? Compacted, undisturbed, etc? How thick of pour? What is the use of the concrete?
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Old 09-17-2017, 05:44 PM
kbs2244 kbs2244 is offline
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This kind of question is why I hire experiences concrete guys.
There are just too many small things that can make a huge difference in the end result of an expensive and very long lasing project.

I have learned that concrete just is not as easy as it looks.

And the ugly lasts as long when done wrong as pretty when done right.

The trick is finding the guy who has been there and done that.
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Old 09-18-2017, 08:48 AM
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Give Don (DDA52) a PM, he will know.
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Old 09-19-2017, 12:48 AM
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Need more details.....and a soil PI and type would help.
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Old 09-20-2017, 03:43 PM
duckman903 duckman903 is offline
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When I built my "shed" dug down 24" to undistrubed clay put drain pipe in then 65 tons of trap rock, then plate compacted it till it wouldn't move any more, then a layer of foil bubble foil insulation, then over killed with rebar 800' 12" X 20" grid, then 8"-10" of 4,000 # mix, yeah its over kill but 8 New England winters it hasn't moved or cracked.
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Old 09-21-2017, 12:20 AM
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One thing y'all need to remember...slab/concrete design and subsurface treatments are extremely area specific. Just because one area did it, doesn't mean it will work where you are. Duckman, what you described, no engineer would pass here. Totally different set of circumstances here. Great for you, not so good for me.


The absolute best way is either get it engineered for your area or copy that which the engineers are having everyone else do around you.
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