PACE Engineers, Inc. 11/12/2024 - Laserfiche WebLink

July 25, 2024 HWA Project No. 2024-231-21 East Marilyn Avenue Culvert 3 HWA GeoSciences Inc. Category 2: Sensitive information Category 2: For official use only / disclosure permissible by law. 2. Generate Seismic Design Parameters: Based on the soils encountered along the project alignment, HWA will determine the Seismic Site Class for seismic design. The design spectral acceleration parameters will then be selected in accordance with AASHTO design methodology. 3. Evaluate Liquefaction: HWA will evaluate the subsurface soils to determine their susceptibility to liquefaction. 4. Culvert Foundation Design: HWA will provide design recommendations for the culvert foundations. HWA anticipates shallow foundations supporting a 3- or 4- sided precast box culvert will be used. However, appropriate foundation design recommendations will be provided if other foundation types are required. 5. Culvert Earth Pressure Recommendations: HWA will provide recommendations for culvert earth pressures to be assumed for design of the structure. 6. Culvert Wing Wall Recommendations: HWA will develop and provide recommendations for wing wall types and design parameters. 7. HWA QA/QC: HWA will have all design calculations and recommendations reviewed by a senior principal prior to distribution to the design team and the city. 8. Meetings: HWA will attend up to two (2) meetings. One meeting is assumed to be with the deign team and the city. The second meeting is assumed to be just with the design team. HWA assumes that all meetings will be virtual. 9. Prepare Draft Geotechnical Report: HWA will prepare a draft geotechnical report for the project. This report will contain the results of the subsurface exploration program, including the log, laboratory test results, and a description of surface and subsurface conditions; a site plan showing the exploration location and other pertinent features; and geotechnical engineering recommendations associated with culvert design. 10. Prepare Final Geotechnical Report: HWA will finalize our geotechnical report once we receive review comments from the design team and the city. Geotechnical Project Management: 1. Geotechnical Project Management and Invoicing: HWA will prepare monthly invoices, and progress reports, if required, for the duration of the project. We will correspond with the design team in the form of emails and telephone calls, as necessary. We will provide project management for the geotechnical components of the design, and we will coordinate with and manage all our subcontractors.