Bugs wrote:
The loading on this type of ramp is not uniform. It is a moving
concentrated load. Whole different [design] ballgame.

Not really. You start out figuring the uniform load (or looking it up
in a table), then you divide your max allowable load by 2 to translate
it to the worst case (load concentrated midspan) then you add your
fudge factor for dynamic loading (i.e. moving). The tables all list
uniform load, that's why I asked for that spec. Your statement is
completely correct, of course. - GWE