3 ms·
>Road wear scales with the fourth power of axle load Could you explain why? (I can't view the Google books link.)
by logicallee 7y ago
>Road wear scales with the fourth power of axle load
Could you explain why? (I can't view the Google books link.)
- masklinn 7y agoThere's no "why", it's a rule of thumb / estimate called the "fourth power rule" (or "fourth power law" but there are other unrelated fourth power laws) established experimentally in the late 50s / early 60s by the AASHO. Basically they built a bunch of roads to the same specifications, drove streams of vehicles through and monitored pavement deterioration.