Forest Road Surfacing: Basic Design Principles and Applied Practices

Start Date: November 8, 2018
Location: Coeur d'Alene, ID
Thursday, November 8:

8:30  Introduction, Expectations, and Workshop Overview

9:00Common Road Surfacing Issues

  • The What, Where, and When Factors: Geology, Soils, Aggregate, Road Prism and Maintenance.
  • How They Make a Difference in Costs, Water Quality and Safety?

10:00  Break

10:30Soils Engineering – Relating Basic Properties to Road Surface Design

  • Soil Classification
  • Soil Moisture Content and Density

Noon  Lunch (included with registration)

1:00Soils Engineering – Relating Mechanical Properties to Road Surface Design

  • Potential Soil Strength vs. Actual Soil Strength
  • Geosynthetics
  • Subgrade Stabilization

2:30  Break

3:00How to Access Local Rock Sources

  • Geology Considerations
  • Rock Source Suitability
  • Rock Classification Methods
  • Aggregate Production and Development

5:00 Adjourn

Friday, November 9:

8:00Does the Rock Meet My Needs?

  • Gradation
  • Durability
  • Dust Abatement
  • Recycling Aggregate
  • Use of RAP

9:30   Break

10:00Commonly Used Aggregate Design Methods

  • AASHTO 1993 – Rut Equation
  • USDA Forest Service – STP
  • OR Dept. of Forestry Surfacing Guidance
  • Using What Has Worked in the Past

Noon   Lunch (included with registration)

1:00Surfacing Design Example Problems

  • Year-round Haul
  • Seasonal Haul
  • Restricted Haul

2:30   Break

3:00Road Surfacing BMPs and Sediment Reduction

  • Mechanics of Sediment Production from Forest Roads
  • Mitigating Surfacing Erosion
  • BMPs

4:00  Summary and Q&A

4:30  Adjourn

About the Conference
The workshop will be held at the Coeur d’Alene Resort at 115 S 2nd St, Coeur d’Alene, ID.

About the Speaker:
Rene’ Renteria is a civil/geotechnical engineer with over 30 years of experience in pavement and geotechnical engineering, with the USDA Forest Service and including 10 years with the Oregon DOT. His current responsibilities include pavement and materials engineering for both paved and unpaved roads on the national forests in Oregon, Washington, and Alaska.