2018-09-10-minutes-public-works-study-session

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Manastash Bridge #76132 Replacement — Geotechnical Construction Support Aspect will provide geotechnical support services during construction of drilled shafts for the Manastash Bridge 476132 Replacement (Project) located in Kittitas County, Washington. Aspect will review and respond to geotechnical -related contractor submittals and/or requests for information before and during construction. It is assumed that Aspect will review and process up to four (4) submittals or RFI's. During drilled shaft construction (four total), an Aspect field representative working under supervision of an Aspect licensed professional engineer will provide full time observation and documentation of drilled shaft excavation and construction. The purpose of these observations is to verify that soil/rock encountered are consistent with the basis of design, and geotechnical elements of construction are completed in general accordance with the Project plans and specifications. Aspect will prepare daily field reports (DFR's) documenting each day's observations, activities, and any field recommendations. An Aspect licensed professional engineer will review the DFR and provide daily project management duties until the end of the drilled shaft construction. We assume drilled shaft construction observation will last up to 10 full days, depending on the contractor's progress. After completion of each drilled shaft, Aspect will review WSDOT-provided Crosshole Sonic Log (CSL) test results for each shaft. Aspect will provide a conclusion as to the suitability of the constructed shaft and will recommend whether the constructed shaft should be approved in a memorandum. At the conclusion of the project, Aspect will prepare and submit a summary report of geotechnical observation and inspections. All of Aspect's DFR's will be included in this report. Assumptions • Engineering direction to the Contractor regarding geotechnical engineering design issues will be communicated through Jacob's project engineer or the County. • Each RFI or submittal will take 2 hours on average to process. • Drilled shaft construction duration will be up to 10 full days. O Materials testing for drilled shaft construction will be completed by others. • Geotechnical questions and concerns by the County or contractor will be conveyed by Jacobs' project engineer to Aspect, and vice versa. + Any additional geotechnical design support by Aspect, if needed, is not included. Deliverables 0 Response to up to 4 submittals/RFI.