Corridor Retaining Walls

So I’m sitting in a class room and spy a drawing of a Retaining wall sketched out. Well not any retaining wall, but the retaining wall I’ve created in Civil 3D Subassembly Composer. Not quite sure if they are modeling walls like this in Civil 3D, but if they wanted to they could create the wall subassembly and use it to help model their project. The subassembly I create may be found here: http://www.civilreminders.com/applications I even created a help file for it: http://www.civilreminders.com/applications/caltranstype1rw

I may want to add the ability to model the Selective Backfill, but I think that may be a project for another day.