Return to index: [Subject] [Thread] [Date] [Author]
RE: effective length factor for sway moment frames? K for frames wit h partially restrained connections?
[Subject Prev][Subject Next][Thread Prev][Thread Next]- To: "INTERNET:seaint(--nospam--at)seaint.org" <seaint(--nospam--at)seaint.org>
- Subject: RE: effective length factor for sway moment frames? K for frames wit h partially restrained connections?
- From: Mark Gilligan <MarkKGilligan(--nospam--at)compuserve.com>
- Date: Fri, 30 Mar 2001 11:00:23 -0500
The author of the following response implies that because we have computer access we should compute the K factor using the computer. I would like to suggest that such practices often take longer than quicker but less exact methods. On numerous ocassions I have seen engineers spend considerable time creating spread sheets to perform a calculation that could be done quicker by hand. Given limited design fees and a limited schedule how exact should our calculations be? Similarly how much effort should we spend to reduce construction costs when the fee is limited? Have computers in many instances actually increased our work load? >>>Theoretical results satisfy all the governing conditions. The theoretical K factor is theoretical exact. They are more reliable than the ones from alignment charts. Those alignment charts were introduced before computer. For the time being, almost every structural engineer has a computer for analysis. Why should we keep applying those inaccurate charts? When computers were not available for most structural engineers, engineers used some approximate methods, for example, two cycles, to analyze frame structures. No one uses two cycles since computer is everywhere. All the results are theoretically analyzed on computers. FEA of K factors is a must.<<< Mark Gilligan
- Follow-Ups:
- Re: effective length factor for sway moment frames? K for frames wit h partially restrained connections?
- From: Scott A. Dunham, PE
- Re: effective length factor for sway moment frames? K for frames wit h partially restrained connections?
- Prev by Subject: RE: effective length factor for sway moment frames? K for frame s wit h partially restrained connections?
- Next by Subject: Re: effective length factor for sway moment frames? K for frames wit h partially restrained connections?
- Previous by thread: RE: Wood Shear Walls
- Next by thread: Re: effective length factor for sway moment frames? K for frames wit h partially restrained connections?
- About this archive
- Messages sorted by: [Subject][Thread][Author][Date]