>> You'll want to get crushed stone (not smooth stones) that also
>> contains the
>> stone dust & small grit. The stone dust/grit is what packs down
>> into a firm
>> surface. A common name here is 1/2" or 3/4" Crusher Run. Smooth
>> stones will
>> never lock together.
>>
I concur. I've had my own road to deal with, and I've overseen
construction sites for our stores. I would add this:
If you have any muddy spots on your road, put down a layer of Mirafi
fabric. This stuff looks like black visqueen, but it is porous. It
will let the water through, but it will prevent the mud coming up
through your rock layer, or (worse yet) the rock disappearing into
the muck. Mirafi is a brand name, but it is a generic description of
this barrier material that your building-supply store should know about.
We once put Mirafi over an entire two-acre site, because the soils
engineer told us that the in-place cost of a layer of Mirafi would be
about 20 percent the cost of an additional six-inches of fill in the
high traffic areas. Since the entire lot was exposed to heavy loads,
we covered the entire site. We simply laid Mirafi ahead of the fill,
starting at the street.
The bogs on the site, one of which nearly swallowed a tractor-trailer
rig, were never a problem again. I'm sold on the stuff. I wish I had
known about it years before, because one of our sites has asphalt
that is about 18" deep in one spot where there was moisture.
- Bill Rabel
Anacortes, WA
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