I'm planning the benchwork for my model railroad. Up until now, I had used
1x4s spaced 24" apart to support my modules, but I'm looking at using an open L-girder style of benchwork. The L-girders I plan on making will be entirely 1x2s, but I'm not sure if they'll be strong enough. The reason for 1x2s is they'll be cut from 2x4s, providing a much better chance of getting straight lumber than with 1x2s.The yard will be a 5/8" piece of plywood supported by L girders on a
12"x12" grid. Do I need to beef this up? I am in an area where movement because of temperature and humidity is a factor. The layout will be in an occasionally air-conditioned but always heated building.Puckdropper