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GEI Consultants | City of Sunny Isles Beach | RFQ 26-07-01 47 Bridge Fender Replacement Designs Dade and Palm Beach Counties, Florida Bedford Technology (now Tangent Materials) and M&J Construction Two fender replacement projects located in South Florida. The William Powell Bridge is located in Dade County and crosses Key Biscayne. The Blue Heron Bridge is located in Palm Beach County and crosses the Intracoastal Waterway. The existing fenders were removed and replaced with new composite piles and fenders made of recycled plastic and fiberglass materials. GEI was responsible for the geotechnical design of the piles and the structural design of the fender system. The analysis and design of the bridge fender systems followed the FDOT Structures Design Guide Volume 1 Section 3.14.D using the computer program, FB- Multipier, developed by the Bridge Software Institute at the University of Florida. This design procedure confirms that the fender system is capable of satisfying the energy requirements identified by the designer for vessel impacts. The process involves the following steps: • Determine the minimum tip elevation for a single pile based on a scour condition which can achieve the maximum pile moment capacity. • Perform a linear analysis to calculate the loading that will satisfy the required energy capacity of the entire fender system. • Perform a non-linear analysis for the fender piles to confirm that the loading results in an acceptable internal bending moment. • Check that the calculated maximum deflection will not encroach on the bridge structure. • Size the terminus piles so that the 3-pile cluster has an acceptable flexural stiffness. • Design fender wale plates so they can transfer shear and moment across the joints. The design of the composite pile and fender system was performed for the supplier of the materials and submitted as a value-engineered alternate system. The system was selected by FDOT. GEI prepared full design drawings and calculation packages submitted to FDOT for their approval and then for construction of the system. GEI also provided engineering support during construction. This involved submittal and RFI reviews and providing calculations of as-built conditions to confirm the design intent was satisfied. DATES 2019-2020 CLIENT REFERENCE Available upon request KEY ELEMENTS • Bridge Fender and Pile Design • FB-Multipier Design • Construction Drawing Generation • Construction Support