I am in need of info regarding vintage 1930s roof truss design for my Appetite Mine buildings. Pictures or drawings would be a big help too. I can't find anything on line except for modern trusses.
I may be wrong, but I think that truss design hasn't changed much since the advent of the steel nail.
Trusses were most likely to be timber, unless the structure was located in a city or someplace with fire codes that required steel and concrete construction.
Looking at photographs in my copy of Train Shed Cyclopedia Issue #19, the trusses shown aren't any different from what you would find today. The only difference, from what I can tell, is that instead of modern nail plates, the trusses were assembled with bolts and large, wide plates that function like a washer. That and the timbers for such large structures were also quite large and heavy instead of the Glulam that's used today.
Thank you, James, Your explanation is good enough for me. I didn't want to spend a lot of time building the wrong type of trusses. Have to keep the rivet counters at bay, don't we.
I will build the trusses with large timber and bolts with washers.