(2) 2x10 loading check
(2) 2x10 loading check
(OP)
I have been asked to check the adequacy of a (2) 2x10 spanning 14 feet. The (2) 2x10 was installed to support the bottom chords of reported sagging roof trusses. The load on the header is about 500 plf. I don't know the grade of the lumber. What is the best, quickest way to check the adequacy of this member without doing a detailed design calculation? Typically I would have just checked this beam in enercalc but I no longer have access to that software. I just need a table that gives me properties of the members so I can run a quick "back of the envelope" type calc (need Sx, Ix, Fb (allow), etc.). Thanks for your time.






RE: (2) 2x10 loading check
http://www.awc.org/pdf/2005-NDS-Supplement.pdf
RE: (2) 2x10 loading check
BA
RE: (2) 2x10 loading check
M x 12 = in-lbs
M / S Fb <=1
Depending conditions you may be able to modify Fb or divide by 1.15 for loads
See NDS for particulars
RE: (2) 2x10 loading check
The OP said he was dealing with a uniform load. You gave the moment for a concentrated load. And the conversion from ft-lbs to in-lbs seems a trifle elementary for this forum. For that matter, this entire thread seems a trifle elementary.
BA
RE: (2) 2x10 loading check
RE: (2) 2x10 loading check
RE: (2) 2x10 loading check
RE: (2) 2x10 loading check
If you need Enercalc to solve this problem, you shouldn't be solving this problem.
RE: (2) 2x10 loading check
RE: (2) 2x10 loading check
RE: (2) 2x10 loading check
RE: (2) 2x10 loading check
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: (2) 2x10 loading check
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: (2) 2x10 loading check
PE, SE
Eastern United States
"If a builder builds a house for someone, and does not construct it properly, and the house which he built falls in and kills its owner, then that builder shall be put to death!"
~Code of Hammurabi
RE: (2) 2x10 loading check
We assume southern pine no. 2 lumber for our design values unless we know otherwise. Can you just specify the species/grade if it's a new beam? If I can't specify what is going in, then I wouldn't use values any better than what you can pick up off the shelf at Lowes...