Supercross obstacles - data?

[Asdrael]

Hi

I wanted to look into building SX tracks for b4 and beyond. I however having troubles finding information on the shape (size, angles, etc) of berms and typical obstacles. Most track maps have something vague more-or-less to scale, and there is this: http://www.thumpertalk.com/topic/101556-track-design/

What I am interested in particular is how the gradient looks like for jump/berms/whoops/landings, and what kind of surface parameters I should use as a general rule for an indoor style track.

Thanks!