The Calibration of the AASHTO ASD and LRFD for Maryland Sign and High Mast Lighting Structure Design
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2020-06-01
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Edition:SPR-B Final Report, (June 2018-June 2020)
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Abstract:The Maryland Department of Transportation State Highway Administration (MDOT SHA) is working to update the standard design for sign and mast arm lighting structures. The following tasks were performed as a part of this research to assist with the update process: (1) Complete design parameters of MD-specified sign; (2) Defining wind pressure applicable by both allowable stress design (ASD) & load and resistance factor design (LRFD) design codes for the sign structure design for different regions of Maryland; (3) Determining the additional impact in transition to the LRFD design, including Maryland sign structure foundation designs; (4) Developing and calibrating fatigue load resisting connections; and (5) Reviewing the conformance of SABRE design models with alternate commercial licensed finite element analysis software.
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