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Thee -don Tomasefti Additional Service Request To Lawrence Kline COMPANY Perkins + Will RE ASR -003 (Rev. 1) FEE TYPE Timecard FROM Brad Malmsten DATE December 4, 2020 PROJECT No. K18051.00 SUB/PHASE NO. Oct -Dec 2020 cc Jose Bofill, Michelle Olender PROJECT Sunny Isles Beach Pedestrian Bridge NAME ASR DESCRIPTION Expanded Project Requirements Related to FDOT ASR BACKGROUND & SCOPE Based on preliminary feedback from the peer review engineer related to FDOT expectations, Thornton Tomasetti, Inc. (TT) is pleased to submit this Additional Service Request (ASR) to provide expanded Structural Engineering Services for Sunny Isles Beach Pedestrian Bridge (the Project). Due to the continued expansion of structural scope based on FDOT requirements, we propose to complete the additional scope on a time and materials basis, We understand the scope of services to include: Concrete detailing Per the FDOT SDM and the interpretation of the peer review engineer, the level of detailing for concrete elements required for this project is well beyond the standard to which TT is accustomed to complying for buildings in the area. Typically, we are able to Illustrate reinforcement requirements with typical details including standard bar size and spacing, leaving it to the contractor and their subconsultants to interpret the drawings and produce shop drwaings for review and approval. According to comments from the peer review engineer, FDOT will require us to significantly expand upon our details, including site specific details for each instance of an element, and information such as bar count and length where we would typically only see that information in shop drawings. The concrete elements in affected include the foundation, foundation walls at the elevator, and the base of the lowest run of the stairs. Additional coordination related to traffic study: Per the FDOT SDM and the interpretation of the peer review engineer, the maintenance of traffic plan (MOT) must be developed by the design team prior to selection of a contractor. The previous assumption of the civil engineer on the project was that this would be developed in collaboration with the contractor. Developing it in advance requires additional coordination with the sequencing drawings that TT has already been expanding as requested by FDOT and the peer review engineer. Expanded construction sequence: The construction sequence shown in TT's drawings needs to be further expanded to consider details of the concrete pour topping slab pour. Some items to be included are concrete thicknesses at various locations along the span to account for anticipated deflection, the sequence of the concrete pour itself, and control joint locations. The expanded construction sequence also requires coordination with the MOT as described. above. 101 NE Third Avenue. Suite 11701 ?4! r_a 9ardr,;rs FL 33301 I T954.903,9300 I www.ThomtonTamasettimm 113