Basswood vs Plywood for structures

I'm getting ready to build my N Scale sawmill complex and need advice on the roofing material. The building is larger than any N Scale buildings I have built in the past.

The wall material is 1/16" basswood which I have on hand and am about to laser cut. It seems to be strong enough for the walls of the structure, but it doesn't seem rigid enough for the roof. I don't have any thicker material on hand to compare with yet. Obviously, I don't want it to sag

The dimensions of the main mill building: 14" long X 8" wide. I was planning on not providing interior supports, the interior is not going to be detailed. The roof material will support the clerestory section. 1/8 material seems a bit thick for N scale roofing. My choices for roof decking are :
1/16" Basswood
1/8" Basswood
1/16" Finland Birch Plywood
1/8" Finland Birch Plywood (3 ply)
1/8" Light Plywood

Does anyone know how 1/16" birch plywood compares to 1/16" basswood?

(I don't know the properties of the "Light Plywood offered by National Balsa)

Please forgive the very poor quality photo of the cardstock mock-up (new digital camera expected soon):

sawmill.jpg


Any recommendations or alternate suggestions would be appreciated.

Wayne
 
F

Fred_M

Birch Plywood is very stable. I use it in 1/64 single ply all the time for boards and fences in HO and On30. The 1/16 would be super strong as it's 2 or 3 ply, at least the Midwest brand I use is. Fred
 

SAL Comet

Member
Ha Muddy, Plywood is always going to be stronger than the same thickness of wood. Because of the laminated layers. Considering the size, I would add several trusses to the inside of the roof to help support the middle. I'd go with the plywood since like Fred said it's much more stable the wood, once again because of the lamination.
 
Thanks both, I'll try the 1/16th birch plywood, with a couple triangular braces inside to keep everything rigid.

Now, to find acres of N Scale metal roofing.

Wayne
 
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