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AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

thread607-431205

AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

(OP)
Quick question... Southern Pine has the following size classifications:

2"-4" wide
5"-6" wide
8" wide
10" wide
12" wide
5"x5" and Larger

Is "wide" the larger dimension? Is a 2x10 considered (2"-4") or (10" wide)?!

Thanks

RE: AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

I'm not sure about AASHTO, but with dimensioned lumber you are correct. Your 2x10 is 10" wide... actual lumber dimensions for a 2x10 are 1-1/2 x 9-1/4. The 2x10 is a nominal dimension, and not actual.

Dik

RE: AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

(OP)
I'm confused with what "size classification" a 2x10 would be in AASHTO LRFD Table 8.4.1.1.4-1. That table gives different design values (allowable stresses prior to applying various strength factors) for the different size classifications which I listed in the original post.

RE: AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

Don't know... maybe, someone else can provide an answer...

Dik

RE: AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

Almost positive that a 2x10 would be 2" wide (nominal) for AASHTO.

Professional Engineer (ME, NH, MA) Structural Engineer (IL)
American Concrete Industries
https://www.facebook.com/AmericanConcrete/

RE: AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

Depends on how the lumber is oriented. "Wide" is the horizontal dimension. "Thick" is the vertical dimension. A 2x10 used as a typical beam is 2" wide.
A 2x10 used as, say, deck flooring is 10" wide.

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

RE: AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

My screw up... please ignore my comment. The 2" nominal dimension is the width and 10" would be the depth... don't know what I was thinking when I replied.

Dik

RE: AASHTO Wood Reference Design Values (Table 8.4.1.1.4-1)

I agree with sliderule, and dik's LATEST comment. lol

Mike McCann, PE, SE (WA)


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