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TRANSPORTATION AGENCY FOR MONTEREY COUNTY Memorandum | |
| | | | | | | | | To: | Technical Advisory Committee | | From: | Michael Zeller, Director of Programming & Project Delivery | | Meeting Date: | March 4, 2021 | | Subject: | Geotechnical Reports & Pavement Rehabilitation |
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| | | | | | | | | RECOMMENDED ACTION: | | RECEIVE presentation on how to read a geotechnical report and select a pavement section. |
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| | | | | | | | | SUMMARY: | | Proper pavement design can help to reduce costs for rehabilitation project and allow for decreased off-haul and wear and tear on the neighboring streets from construction traffic. There are different options for pavement rehabilitation dependent on the type of distress the roadway is experiencing. These options will be present in a geotechnical report, which is an important tool for evaluating rehabilitation methods. |
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| | | | | | | | | FINANCIAL IMPACT: | | Measure X allocates 60% of the funds received to local road maintenance, pothole repairs & safety. The Measure X implementing ordinance requires jurisdictions to maintain a pavement management program to be eligible for funding. Improved pavement management capabilities could assist local jurisdictions with maximizing Measure X and Senate Bill 1 maintenance funds. |
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| | | | | | | | | DISCUSSION: | Philip Edwards is a Senior Engineer with Butano Geotechnical Engineering, with 10 years of experience working in geotechnical engineering including field investigations, laboratory work, geotechnical engineering analysis, and field observation and testing. He specializes in pavement design, retaining wall design, and Division of State Architect (DSA) school projects. His presentation to the Technical Advisory Committee on reading a geotechnical report will cover:
- How a pavement investigation is completed and why;
- Different design methodologies and how to specify for Caltrans, AASHTO, and / or Mechanistic Empirical;
- Types of roadway distress and rehabilitation options for each type of distress;
- How the size of a project effects rehabilitation options;
- Special considerations including slopes, intersections, poor soil, drainage, and "dig outs";
- Aesthetics and the use of different pavement gradations and seal coats; and
- How rehabilitation options show up in your geotechnical report, what to expect from different options, and how to choose a rehabilitation option.
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