Building roof truss designs and trying to get it to scale

By Fran
April 28 in Buildings and kits of buildings

https://irishrailwaymodeller.com/topic/18601-building-roof-truss-designs-and-trying-to-get-it-to-scale/

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Fran

Posted April 28

The roof truss designs below are roughly 300mm wide, based on OO scale this would mean the building/ engine shed would be 75' wide?
I know that some buildings would be that wide but I imagine the design would be more 'industrial/commercial' these look that they're agricultural/domestic style.
Does anyone have a links specifically railway building design that I maybe able to imitate?
My other concern is that the spars may get too thin, they're currently 2mm. Maybe a truss style roof isn't the way to go for a model building.