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Design Guide 36
Design Considerations for Camber Smarter.
Design Guide36 Design Considerations for Camber
Lawrence A. Kloiber PESusan B.Burmeister PE
by
American Institute of Steel Construction
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The information presented in this publication has been prepared following recognized principles of designand construction. While it is believed to be accurate this information should not be used or relied upon for any specific application without petent professional examination and verification of its accuracy.suitability and applicability by a licensed engineer or architect. The publication of this information is not a employees or mittee members or of any other person named herein that this information is suitablesaedoe eouuuowoooasnened oeaemaking use of the information presented in this publication assumes alliability arising from such use.
Caution must be exercised when relying upon standards and guiclelines cleveloped by other bodies andincorporated by reference herein since such material may be modified or amendled from time to time sub-for such material other than to refer to it and incorporate it by reference at the time of the initial publication of this edition.
Printed in the United States of America
Authors
Lawrence A. Kloiber PE is a structural steel design and fabrication consultant to LeJeune Steel Co. He is a member Emeritusof the AISC Commite onSpecifications the AISC Commitee on the Code of Standard Practice and the ASCE/SEI Commiteeon the Design of Steel Building Structures. He also currently serves on the AWS D1.1 Submittee D1Q on Steel.
Susan B. Burmeister PE is the owner of S2B Structural Consultants PLLC. Her background includes the structural design of posite steel structures for a variety of building types including mercial offices hositals and medical venues academictee 5 on Composite Design. structures and industrial facilities. Ms. Burmeister is a member of the AISC Commitee on Specifications and its Task Commit-
Acknowledgments
Many people contributed to this Design Guide. The members of the AISC Commitee on the Code of Standard Practice saw thethe Design of Steel Building Structures also provided guidance. Numerous structural engineers shared their design experiences. o a jo s spad pe nd o s pRonald Johnson SE and John Lewis SE discussed their design methods and provided field survey information. Helen McKay SE assted with drafting construction figures. The reviewers listed here were very helpful and their ments appreciated:
Farid Alfawakhiri Allen Adams Lou Geschwindner Ramon Gilsanz Carlo Lini Viji Kuruvilla Jim StoriAbbas Aminmansour Larry Grifis Margaret Matthew Sdd Jon Andrews Bill Andrews Kirk Harman Tony Hazel Pat McManus Scott MetzgerBarry Barger Eric Bolin Chris Hewitt Mark Holland J.R. Mujagic Davis Parsons Gary VioletteCynthia Duncan Ronald Johnson Dave Ruby PIAESteven Fenves Benjamin Kaan Victor Shneur Ron Yeager
The late David Ricker PE was not part of this project but he wrote the first practical paper on cambering steel beams 30 years ago. His example of sharing his knowledge in that paper and numerous others that followed set an example of profesionalresponsibility that should inspire all of us.
Preface
ated with specifying camber for steel floor or roof members in an effort to enable a practicing engineer to make infomed deci- This Design Guide has been developed to educate the industry on the advantages disadvantages and potential problems associ-floor beams such as transfer girders plate girders cantilever beams and various types of trusses will also be discussed. sions in evaluating the best solution with regard to camber for their specific project. Camber of members other than posite
