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Roof Trusses
 Moderated by: Herb Kephart
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 Posted: Mon Apr 9th, 2018 03:23 pm
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Larry G
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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.
Larry Gant

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 Posted: Mon Apr 9th, 2018 05:11 pm
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jtrain
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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.

--James W.



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 Posted: Tue Apr 10th, 2018 12:30 am
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Larry G
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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.
Larry Gant

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 Posted: Tue Apr 10th, 2018 01:08 am
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pipopak
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Hi Larry:
trusses have been basically the same for a long time, main difference being the choice or availability of fasteners, Just google antique wood roof trusses design pictures.

Jose.



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 Posted: Tue Apr 10th, 2018 04:31 pm
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Larry G
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Thank you, Jose,

I found a good picture of a basic truss design. This will help a lot when I build my trusses. Larry G

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