Michael Hopper
Structural Option
John Jay College Expansion Project
New York, NY
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User Note: Note: While great efforts have been taken to provide accurate and complete information on the pages of CPEP, please be aware that the information contained herewith is considered a work‐in‐progress for this thesis project. Modifications and changes related to the original building designs and construction methodologies for this senior thesis project are solely the interpretation of Michael Hopper. Changes and discrepancies in no way imply that the original design contained errors or was flawed. Differing assumptions, code references, requirements, and methodologies have been incorporated into this thesis project; therefore, investigation results may vary from the original design. |
Thesis Proposal
Downloads: (12/12/2008)
the proposed thesis is intended to simplify the transfer system. Transfer trusses will be moved from the penthouse level and redesigned for the 5th or 6th level. By transferring gravity loads over the Amtrak tracks at the 5th or 6th level, typical steel framing can be used to support all floor levels. This change will also impact the lateral force-resisting systems, which are steel braced frames. In the North-South direction, the transfer trusses act as a coupling beam at the penthouse level between braced frame cores. After studying the behavior of the braced frame core in technical report three, it was found that the coupling behavior was needed to control lateral drift requirements. Therefore, an in-depth lateral analysis will be performed to determine the impact on the lateral system caused by changing the location of the transfer trusses.
Breadth Studies:
Moving the location of the transfer trusses not only impacts the structural system, but it also affects other aspects of the building. An architectural breadth must be implemented to adjust the floor plans to meet functional and aesthetical requirements of exposed steel trusses. A construction breadth must also be studied to determine the necessary changes in the construction methodology to build the new system. To do this, a revised construction schedule will be created and cost differentials will be presented.
Updated Thesis Proposal
Downloads: (1/20/2009)