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Miller, Bryan Scott (2004) BEHAVIOR OF WEB-TAPERED BUILT-UP I-SHAPED BEAMS. Master's Thesis, University of Pittsburgh. (Unpublished)

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Appendix F of the AISC-LRFD Specification governs the design of web-tapered I-shaped beams. These design provisions are restricted to beams with equal flange areas and non-slender webs. However, the current practice in the low-rise metal building industry is to employ flanges of unequal area and slender webs; a time honored practice that has resulted in safe and economical structures. The current study utilizes validated nonlinear finite element analysis techniques to predict the flexural response and corresponding limit states associated with mild-carbon steel doubly-symmetric web-tapered I-shaped beams. A parametric study is performed to study the moment capacity and flexural ductility in the inelastic range of various beam geometries with length-to-depth ratios between two and three (i.e. what one normally encounters in the rafter sections of a low-rise metal building gable frame). Compactness criteria that ensure attainment of a rotation capacity equal to three are examined and results tabulated. A comparison is made between the Specification design provisions and the ultimate moment capacity and structural ductility predicted by the finite element method. Conclusions are made regarding the effects of plate slenderness on the behavior of the nonprismatic beam models. Recommendations are made for further research of singly-symmetric web-tapered beams.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
Miller, Bryan Scottbsmst27@pitt.eduBSMST27
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairEarls, Christopher
Committee MemberLin,
Committee MemberTorkamani, Morteza
Date: 2 February 2004
Date Type: Completion
Defense Date: 2 December 2003
Approval Date: 2 February 2004
Submission Date: 13 November 2003
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Civil and Environmental Engineering
Degree: MSCE - Master of Science in Civil Engineering
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: Load and Resistance Factor Design; Metal Building Manufacturers Association
Other ID:, etd-11132003-135449
Date Deposited: 10 Nov 2011 20:04
Last Modified: 15 Nov 2016 13:51


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