A long break in the action on the P&W-RR as the Canyon Module grabbed all of my attention. Anyway, I did finally get back to complete most of the foam installation with all of the major grades completed.

As work continues you can see the north side grade building up.  As I did this section I discovered that creating a graceful route was easier to accomplish by using the foam riser's natural tendency to average out bends. 

Just to give you some idea of how the north side grade will work, here is an illustration of that grade shown with the various foam build-ups that will be needed to make it work.  

In this photo you can see that I've extended the 1/2" sheet foam for the initial portion of the main part of the layout where the track remains level. 

Much of the P&W-RR structure is being built on a foam base and with foam incline grades.  All of the products use in this particular layout come from Woodland Scenics which are readily available at local hobby supply stores.  During the course of building up the layout, I'll share my experience with the use of foam and hopefully some interesting tips and techniques.