I have been reading “Traces of the Past: A Field Guide to Industrial Archaeology By David Weitzman, the 1980 printing. I misplaced the book a few months ago, and just recently found it again.
Chapter 3 was a collection of historical data and figures about different truss designs, particularly for railroad bridges. The real advantage to this chapter is using it to identify the age of an unknown bridge, as there are quite a few tips and tricks for estimating the age. Some of them have to do with the actual design and who patented each piece, and some have to do with the construction methods, such as the use of cotter pins, riveted joints and so on.
Chapter 4 was similar to Chapter 3, only it discusses roof trusses instead of bridge trusses.
Now that I have found this book again, I will post more about it in the days to come.
Thank you for reading my post.
Weitzman, David. Traces of the Past: A Field Guide to Industrial Archaeology. Charles Scribner’s Sons, New York, 1980.