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Mushroom layout design -- pros and cons
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As a builder of a large mushroom layout (26' x 52') in n-scale, there is a lot of <br />preplaning involved. As Joe wrote, I will agree on the pros and cons. About 15 <br />years ago I drew up a basic dream layout plan (basic benchwork with no track <br />drawn in) to get a idea to what size would be needed to get a 24" min separtion <br />for the mushroom part of the layout. In 1998 I started building my house and I had <br />10 foot walls poured for the basement. It took a year and a half of weekends for <br />me to buid it by myself.I did everything except fin***he sheetrock. It took another <br />two and a half years to get started on the layout. <br /> The layout starts at the far end of the penninsula on the lower half, and stays <br />level along it till it comes to the perimeter wall and the 1 1/2% grade starts here. <br />With the grade along the entire perimeter walls with the exception of Keddie yard <br />(about 30' long), I gained 28" . Where it comes back to the penninsula the track <br />is 80" off of the floor. This is were you enter the layout room, walking under and <br />up to the step to the raised floor, which is 22" off of the concrete floor. I used 2x6s <br />as joist and 3/4 t&g plywood, no short cuts here. The track hieght on the lower <br /> mushroom is 54" and on the upper is about 58". At the far end of the penninsula <br />is a 9 1/2 turn 2% grade 56" x 80" helix that connects the two leves and the staging <br />yard that is 90" off of the floor. <br /> Rodney
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