- #1
fiddlesticks
- 1
- 0
I would like to know if there are any guides or tables that will allow you to convert 2x Douglas Fir joists to an equivalent rectangular steel tube.
Click For Summary
Discussion Overview
The discussion revolves around the conversion of wood joists, specifically 2x Douglas Fir, to an equivalent rectangular steel tube. The focus is on finding guides or tables for this conversion, as well as the necessary calculations involved.
Discussion Character
- Technical explanation, Conceptual clarification
Main Points Raised
- One participant inquires about guides or tables for converting wood joists to steel.
- Another participant suggests that no specific guide exists and implies that structural engineers would typically perform loading calculations to determine the required cross-sectional moment for steel.
- A third participant mentions a USDA handbook that provides engineering data on wood, which may assist in the conversion process.
- A later reply expresses appreciation for the shared link to the USDA handbook.
Areas of Agreement / Disagreement
Participants do not appear to reach a consensus on the availability of guides for conversion, with some suggesting reliance on calculations instead. The discussion remains unresolved regarding the best approach for the conversion.
Contextual Notes
Limitations include the absence of specific conversion tables and the reliance on structural engineering calculations, which may vary based on specific conditions and assumptions.
- #2
FredGarvin
Science Advisor
- 5,097
- 10
There is no guide that I am aware of. I would imagine any structural engineer would simply run loading equations to calculate the required cross sectional moment required for the new material.
- #3
FredGarvin
Science Advisor
- 5,097
- 10
I forgot to mention that the USDA puts out a free handbook that is pretty good that includes a lot of engineering data on wood. That should be a big help for you.
http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/fplgtr113.htm
http://www.fpl.fs.fed.us/documnts/fplgtr/fplgtr113/fplgtr113.htm
- #4
Danger
Gold Member
- 9,805
- 251
Oooohhhh... straight into my bookmark file. Nice link, Fred. 
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