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When to use "Subroadbed"
When to use "Subroadbed"
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GerFust
Member since
February 2001
From: East Lansing, MI, US
223 posts
When to use "Subroadbed"
Posted by
GerFust
on Monday, December 15, 2003 11:22 AM
I'm starting on a new layout. I noticed in the January MR article on "how to build a model railroad in less than $500" that the author uses a subroadbed. That is, between his styrofoam "ground" and cork roadbed (in my case), he inserted another inch of styrofoam.
Then, he added that same inch to his industrial area, and mounted his buildings on styrofoam bases, leaving very little of the layout not covered with the subroadbed layer.
Other than creating an occasional depression in the world's surface, why would you add it at all?
Thanks,
Jer
[ ]===^=====xx o o O O O O o o The Northern-er (info on the layout, http://www.msu.edu/~fust/)
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Anonymous
Member since
April 2003
305,205 posts
Posted by
Anonymous
on Monday, December 15, 2003 2:22 PM
You wouldn't.
The only reason to go for more than the "standard" 2" of foam (on suitable support, of course) is to get enough room to make deep(er) landforms, like valleys and such. Lakes and rivers do not actually have to be deep, as paint and water effects can make them appear much deeper than the 1/8" to 1/4" they actually require. But if you want to cross that spectacular valley, you have to have room.
Not having read the Jan 2004 issue, I can't really comment any more.
On my own layout, I am trying my best to negate the effect of the cork roadbed by mounting buildings and scenery on thin sheets of styrofoam or foamcore to bring the "ground" up to the level of the rails. I am doing this everywhere except where the cork will represent the high, well maintained right-of-way of the main line.
Andrew
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