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Road base for brick and sand walkway?

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Road base for brick and sand walkway? Peter Seibel 07-17-2008
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Posted by on July 17, 2008, 2:59 pm
>
> > I don't think the 1/4 minus will compact very well, but it might be
> > adequate for a short walkway
>
> I'm puzzled by this--wouldn't the finer grained 1/4 minus compact
> *better* than 3/4 (or 5/8) minus. Or do you need some larger bits to
> hold things together?
>
> -Peter

"engineered road base" =3D DGA =3D Dense Grade Aggregate. When you tamp
it, and it gets wet, it's like concrete when it drys out, yet it still
provides drainage. For a walk-way you'd probably be fine with what
you've got. If you were driving over it then you'd want to definitely
go with the properly prepared DGA base.

Posted by HerHusband on July 17, 2008, 7:32 pm
>> I don't think the 1/4 minus will compact very well, but it might be
>> adequate for a short walkway

> I'm puzzled by this--wouldn't the finer grained 1/4 minus compact
> *better* than 3/4 (or 5/8) minus. Or do you need some larger bits to
> hold things together?

I don't know the engineering behind it, but compact "sand" which has even
finer grains and you'll leave a footprint as soon as you step on it.
Compact 5/8" minus and it leaves a surface as hard as concrete to walk on.
So judging by that behaviour, I'd say yes, the larger stones are needed for
good compaction.

Still, for a walkway, what you have will probably work fine.

Anthony

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