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INSTRUCTOR:
F. Douglas Shields, Jr, Ph.D., P.E., BC.WRE, F.EWRI, F.ASCE
Purpose and Background
Stream restoration is widely practiced in developed countries, with annual expenditures in the U.S. exceeding $1 billion. Placement of large wood (felled trees or parts of trees) in degraded rivers and streams is one of the most widely practiced river restoration measures. Cost-effective application of large wood introduction is difficult because natural wood decays and is transported by rivers. Hazards posed by floating debris to downstream bridges and other infrastructure are always a concern. Design and project implementation guidance is found in three recently released government handbooks. Herein training is provided to familiarize students with computational approaches for detailed analysis of forces and moments acting on large wood placements. Key considerations for project implementation are also introduced, as are methods for constructability assessment.
Benefits and Learning Outcomes
Upon completion of this course, you will be able to:
- Identify key roles and functions of large wood in lotic ecosystems
- Identify information resources (design handbooks and spreadsheets) for large wood
- Describe several types of large wood structures
- Select appropriate parameters and coefficients for force and moment analyses for large wood structures
- Perform basic force and moment computations and associated sensitivity analyses
- Identify risk factors that are beyond the current state of the art
- Complete a force and moment balance and compute associated safety factors for large wood placement
- List key environmental impact/permit issues for large wood projects in the USA
- Identify essential features of project safety plans
Assessment of Learning Outcomes
Students' achievement of the learning outcomes will be assessed via a short post-assessment (true-false, multiple choice and fill in the blank questions).
Who Should Attend?
- Hydraulic engineers
- Hydrologists
- Planners and project managers
- Geomorphologists
- Biologists and ecologists
Outline
- Review of information resources (design handbooks) for large wood as a rstoration tool
- Is wood appropriate for your site? - criteria for screening
- Three design approaches
- 3.1. Geomorphic analysis
- 3.2. Biological analysis
- 3.3. Site design
- Key issues for large wood design
- Design life for wood structures/selection of design event or condition
- Types of wood structures
- Hydraulic analysis/flow force computations
- Findings of recent research on drag and lift coefficients
- Sensitivity and Monte Carlo analyses
- Constructability assessment
How to Earn your CEUs/PDHs
This online course is worth 0.1 CEUs /1 PDH. To receive your certificate of completion, you will need to complete a short on-line post-test and receive a passing score of 70% or higher within 30 days of the course.
How do I convert CEUs to PDHs?
1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]