I've recently been serving on a committee in my city to review the IBC 2000 code for adoption. One interesting aspect of the code is the elimination of the 1/3 stress increase that is typically used for transient loads.
I remember reading an article, published in some engineering journal, about the stress increase. The writer had spent a great deal of time looking for the source of the 1/3 stress increase and couldn't find it. He found plenty of people who understood the rationale behind it, but NO ONE who could name the orignator of it, nor the specific quantitative reasoning for it (i.e. why not 1/4?)
Does anyone know when/where/why it was first introduced?
I remember reading an article, published in some engineering journal, about the stress increase. The writer had spent a great deal of time looking for the source of the 1/3 stress increase and couldn't find it. He found plenty of people who understood the rationale behind it, but NO ONE who could name the orignator of it, nor the specific quantitative reasoning for it (i.e. why not 1/4?)
Does anyone know when/where/why it was first introduced?