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Thursday, October 23, 2008

Effective Lengths of Web-Tapered Columns in Rigid Metal Building Frames

Type of Document Master's Thesis
Author Cary, Charles William III
Author's Email Address ccary@vt.edu
URN etd-358103049751491
Title Effective Lengths of Web-Tapered Columns in Rigid Metal Building Frames
Degree Master of Science
Department Civil Engineering
Advisory Committee
Advisor Name Title
Thomas M. Murray Committee Chair
Siegfried M. Holzer none
W. Samuel Easterling none
Keywords

* tapered
* effective length
* metal building
* column

Date of Defense 1997-05-27
Availability unrestricted
Abstract

Current procedures for estimating effective

length factors for web-tapered members rely

heavily on the use of charts and graphs. This

makes them difficult to implement using a

computer. In addition, they are often based

on unrealistic assumptions. In cases where

these assumptions are not satisfied, design

errors may result. This investigation proposes

a modification to an effective length factor

expression developed by Lui (1992). This

modification allows the expression to be

applied to web-tapered members with good

accuracy.

A derivation of the proposed expression is

presented, and the results obtained by

applying the expression to a range of frames

are compared to the results obtained from

second-order finite element analyses.

Calculations involved in using the expression

are presented.

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2 comments:

Anonymous said...
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Anonymous said...

As a contractor who still does my fair share of carpentry, and who has been pricing myself a shop, I prefer metal. I can get a Metal Building erected (material & labor) for the same price that I would pay for the wood shop, with siding, roofing, etc. I wanted to build it myself but cannot justify the obvious choice. By the way, I price out jobs every week.

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