Chapter 6: AISC 13th Edition
Chapter 6: AISC 13th Edition
(OP)
I just now noticed this chapter and the tables for combined loading.
Does anyone actually use it? How can it be a simplification/"design aid" of Ch. H?
I thought Spec. Ch. H was about as simple as it gets. Am I just totally missing the benefit of CH 6?
Does anyone actually use it? How can it be a simplification/"design aid" of Ch. H?
I thought Spec. Ch. H was about as simple as it gets. Am I just totally missing the benefit of CH 6?






RE: Chapter 6: AISC 13th Edition
RE: Chapter 6: AISC 13th Edition
The first time I saw those, my impression was that they were a total waste of space. After trying to use them, I still think that. I've heard them praised by a couple of the higher up AISC guys, so I'm sure they're not going anywhere.
RE: Chapter 6: AISC 13th Edition
1. To get an exact value of the moment strength of a beam at a certain unbraced length in lieu of trying to follow it through the Chapter 3 unbraced length graphs.
2. To get compression strength values for members that are not generally in the Chapter 4 column tables.
Examples:
1. Find PhiMn of W21x44 with 20' unbraced length:
PhiMn = (8/9)*(1/the bx value in the Chapter 6 Tables). From p6-49, bx = 8.46*10^-3. So (8/9)*(1/0.00846) = 105ft-k
2. Find the axial strength of a W18x40 unbraced for 15' in both directions.
PhiPn = (1/the p value in the Chapter 6 tables).
From p6-57, p=7.56*10^-3. So (1/0.00756) = 132.3kips.