Give us more usable quantities from our assemblies.I.E. l.f. of curb, s.y. of pavement, tons of pavement and from our surfaces let us predetermine where we have existing items, like ex. pavement, ex. concrete ex. sidewalks, curb and gutters and anything else that we may need to add up for quantities. Remove and replace. Give us a way to model this!Some of this could be another property of the sub-assemblies. This is something that shouldn't need the user to create another corridor surface for; this should be as simple as building a report. Think about it when you look at your corridor in 3D, everything is there we just need to be able to add it all up somehow.