Ed, I can see why you saved that data plate!
Thanks for your comment on a survivor in Petawawa.
It looks rather nice and I agree that the Bailey section is the later type with the wider lower beams.
So far, I have just found one picture of the pontoons in Petawawa.
source:
http://silverhawkauthor.com/royal-ca...s-rce_318.html
Is "2 feet 6 inches" the height from water level to the top of the pontoon? I am asking, because 2'6" seems a bit low for the full pontoon (?).
By the way, this time i am asking for a scale model.....I am not planning on making 1:1 repro pontoons (yet).
Alex