

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 Easterling, William Samuel Holzer, Siegfried M. Murray, Thomas M. Committee Chair Keywords
- metal building
- effective length
- tapered
- 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 fromsecond-order finite element analyses. Calculations involved in using the expression are presented.
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