Pavement Design Workshop
2008 Michigan’s County Engineers’
Pavement Design Workshop
1. Part I: Overview of Key Pavement Concepts and Site Evaluations
a. Workshop Goals and Agenda
b. Michigan’s Geology for Pavement Engineers
c. Geotechnical Evaluations for Pavement Design
i. USGS, USDA, and Soil Survey
ii. Non-Destructive Testing- FWD and Profiling
iii. Destructive Testing- Rigs and Tools
iv. Sampling Frequency and Examples
v. Important Questions/Data Needed Before The Evaluation
2. Part II: Introduction to the AASHTO Pavement Design Method
a. History and Basic Philosophy
b. Key Road Test Findings: AC and PCC Design Charts
c. Equivalent Single Axle Load (ESAL) Concept
d. Present Serviceability Index (PSI) Concept
e. Reliability and Standard Deviation Concepts
f. Subgrade Properties for Pavement Designs
g. Traffic Data for Pavement Designs
3. Part III: Pavement Designs
a. Flexible (AC) Pavement Design
i. Equal SN’s are not always Equal
ii. MDOT Bituminous Mixtures, Bases and Subbases
iii. Application in a Swamp
iv. Layer Coefficients and County Minimums
b. Rigid (PCC) Pavement Design
i. General Behavior
ii. Typical PCC Material Properties
iii. MDOT Portland Cement Concrete Mixes
iv. Joints and Steel
c. Overlays and Widening of Existing Pavement
i. Widening Embankments and Existing Subgrade Undercuts
ii. AC overlay of Existing AC Pavement
iii. Composite Pavements and NDT
iv. The Tie-In Joints and Loss of Support
4. Part IV: Class Project: Livingston County Primary- D-19
a. New AC Design
b. New PCC Design
c. Design of AC overlay over Existing AC Section
d. Treatments at Swamps
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