11-14-2014, 06:21 PM
(11-14-2014, 05:57 PM)plam Wrote: But, seeing as the gravel already washes out, it may be true that asphalt may also wash out over time as well. I asked a civil engineering faculty colleague of mine: when water gets underneath asphalt, it does move the asphalt (even potentially uphill). We'll have to see what happens with this path in the next few years.
Yes asphalt will eventually wash out too. But it will take a lot longer particularly if the grade was properly thought out, which we have no reason to assume it wasn't.