N scale grades, slopes and piers?

[PittBull]

I have drawn my Atlas N-7, N scale layout on my 48x72 plywood benchwork. The N-7 involves one bridge.
Three newbie questions:
1. Should I butt the cork roadbed up against the #1 Atlas pier?
2. How should I support the flex track between the piers, assuming that I should that is?
3. Are there any other options to create the grades to & from the bridge since I'm not sure whether I am going to keep the piers exposed or not.

Thanks for helping a newbie!

 

[Burlington Bob]

Do you mean a pier set like this: http://www.modeltrainstuff.com/Atlas-N-2541-Code-80-Over-N-Under-Pier-Set-25-p/atl-2541.htm? I've never used one or seen one used. My guess would be to do whatever looks the best for your circumstances. I believe that these are designed to attach to the track itself without any support between the piers. The closer you place them, the steeper the grade will be. This is an important consideration, especially when curves are involved, because a curve increases the power and traction needed just as the grade does. Usually a grade of 2% or less is desirable though that can be up to 4% under some conditions (think straight track).

Another way is to use these risers: http://www.modeltrainstuff.com/SubTerrain-Layout-Structures-s/433.htm. These are designed to be have scenery covering them so it looks like an embankment and are available in different grades. Maybe somebody with more experience can help with more information.

 

[Rico]

Personally I'd go with the cookie cutter method, using the plywood as your riser.
Otherwise I'd do the styrofoam risers Bob shows, track hanging from piers just doesn't look quite right.