"RogerT" wrote in message
...
The asphalt material is slightly pliable. The surface underneath needs to
be a hard compacted surface -- I think it is compacted modified stone (or
something like that). That creates a solid surface for the asphalt
material. The first layer of asphalt material needs to also be compacted
with at least a 5,000 pound roller and is called a stabilizing layer.
Then a second coat of asphalt goes on top of that and is compacted.

If you don't put something down first and compact it, you will have a roller
coaster surface once traffic has run on it a year or so.

Steve

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