greauxpete
Mechanical
- Jun 19, 2003
- 12
Hello,
I was wondering if you someone could help with a design issue I am having with TU8x8x3/16.
The tube is classified as a “Slender” tube due to the high b/t ratio when compared to values in the AISC Manual 8th and 9th edition. I have figured it out in the 13th edition (its more straight forward but would like to compare side by side)
As a result, the AISC specification requires that the effective width (beff) be calculated and then
from the effective width calculate the effective section modulus (See attached spreadsheet).
The problem I am having is, the calculated effective width (beff), is larger than both the actual width, (bactual)
and the AISCM requires that the effective width (beff) be smaller than the actual width (bactual).
Am I comparing the effective width to the correct width? Should I be comparing the effective width
to the actual width (bactual) or the design width (bdesign = bactual – 3t)?
I have attached a spreadsheet with the comments/ question marked up in red.
I would appreciate any help/guidance you can provide.
I was wondering if you someone could help with a design issue I am having with TU8x8x3/16.
The tube is classified as a “Slender” tube due to the high b/t ratio when compared to values in the AISC Manual 8th and 9th edition. I have figured it out in the 13th edition (its more straight forward but would like to compare side by side)
As a result, the AISC specification requires that the effective width (beff) be calculated and then
from the effective width calculate the effective section modulus (See attached spreadsheet).
The problem I am having is, the calculated effective width (beff), is larger than both the actual width, (bactual)
and the AISCM requires that the effective width (beff) be smaller than the actual width (bactual).
Am I comparing the effective width to the correct width? Should I be comparing the effective width
to the actual width (bactual) or the design width (bdesign = bactual – 3t)?
I have attached a spreadsheet with the comments/ question marked up in red.
I would appreciate any help/guidance you can provide.