Title page for ETD etd-358103049751491


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 from

second-order finite element analyses. Calculations involved in using the expression are presented.

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