From the Roman Pantheon to the Renaissance Duomo to the Astrodome spanning large spaces has always challenged engineers and builders. More recently, the addition of kinetic roof elements have further added to the allure of long span construction. This seminar will provide an overview of the design of long span steel roofs including a survey of recent long span structure types, concept planning for long span roofs, roof materials, loading criteria including wind tunnel testing, analysis techniques, stability analysis, approaches to joinery design, and erection engineering. Of particular emphasis will be the strong link between design and construction in long span roof structures. An overview of design approaches for long span roofs in high seismic zones will also be covered.
Mark Waggoner, SE
Mark is a Principal in the Austin, Texas office at Walter P Moore. He is active in the design of long-span stadium roofs, kinetic structures, and other special structures. Mark currently chairs ASCE/SEI 55 Tensile Membrane Structures, and is involved in the development of the ASCE/SEI Standard for Mitigation of Disproportionate Collapse Potential in Buildings. He is a past chair of the ASCE/SEI Special Structures Committee. Mark has worked on the design of the LASED Stadium since its inception and has led the roof design effort for Walter P Moore.
Rafael Sabelli, SE
Rafael is a Principal and Director of Seismic Design at Walter P Moore. Rafael has earned a Special Achievement Award from AISC, as well as the T.R. Higgins Lectureship award. He is active in the development of seismic design standards for steel systems and is vice-chair of the AISC Seismic Provisions Committee, the ASCE 7 Seismic Task Committee, and the NIST Building Seismic Safety Council’s Provisions Update Committee. Rafael is the chair of the AISC Seismic Design Manual committee and was the Project manager for the 5-volume SEAOC Seismic Design Manual.