6/12/2003 1
AASHTO
Report from
Task Force onHydrology and Hydraulics
Subcommittee on DesignBoston, Massachusetts
June 12, 2003
2 6/12/2003
Highway Drainage GuidelinesModel Drainage Manual
• 2003 HDG and MDM are forwarded to SOD – HDG new Chapter 15 balloted in 2002.
• Roy Jorgensen Associates, Inc., assisted Task Force.• Technical update by the Task Force members.• Very high quality professional documents.
– HDG: 15 chapters. Dual Units.
– MDM: 21 chapters. SI and US Customary editions.
– H&H Glossary included with both HDG and MDM.
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On-going Research Projects
24-7(2) Countermeasures
24-14 Scour at Contracted Bridge Sites
24-15 Bridge Scour in Cohesive Materials
24-16 Channel Migration
25-12 Wet Detention Pond Research
21-07 Development of Portable Scour Measuring Equipment
24-18 Countermeasures to Protect Bridge Abutments
24-19 Environmentally Sensitive Channel and Bank Protection
24-20 Prediction of Scour at Bridge Abutments
6/12/2003 4
On-going Research Projects Continued
24-07(146) Development of Software Verification Protocol for H&H Models
15-24 Hydraulic Loss Coefficients for Culverts
24-23 Riprap Design Criteria, Specifications, and Quality Control
24-24 Criteria for Selecting Hydraulic Models
24-25 Risk-based Guidelines for Determining the Need for Investigation of Unknown Bridge Foundations
24-26 Effects of Debris on Pier Scour at Bridges
24-8 Scour at Bridge Foundations Research Needs. Projects funded
FY98: 3 projects 24-14, 24-15, 24-16
FY01: 3 projects
6/12/2003 5
2005 Problem Statements to be Submitted by H&H Task Force
• Time Rate of Scour at Wide and Skewed Bridges
• Coordinated Update of Rainfall Maps in United States (NOAA/NWS moving too slowly. Funding as NCHRP project will help)
• Effects of Fractured or Degradable Rock on Pier Scour at Bridges
• Procedure for Determination of Joint Probability of Design Peak Flows at Stream Confluences
• Development of Bench Test Method for Determining Manning’s n-value for Culverts
• Effects of Riprap on Fish Habitat
• Evaluation of Long-Term Performance of Stormwater BMPs.
6/12/2003 6
Problem Statements Drafted
Scour at Bridge Foundations-- Research Needs
Development of a Specification to Mitigate Hydroplaning Effects
Develop Hydraulically Efficient Bridge Rail
Development of a Prediction Model for Ice Jam Formation
In-Situ Scour Measuring Device
Integration of Water Quality and Drainage Structure Design
Coastal and Tidal Waterway Stability and Scour
Turbidity and Wash Load Effect on Scour Depth
6/12/2003 7
2008 HDG and MDM
• Technical updates– Capture changes in HDSs, HECs, and software
– Preliminary list of enhancements is available
– HDG new topics: MS4 guidelines, workflow, groundwater, hydroplaning.
– HDG and MDM: Chairs are working on lists of enhancements.
• Improve usability– Easier to use
– Increase sales
6/12/2003 8
Task Force Membership
Region 1 Region 2 Region 3 Region 4Maryland * Arkansas Illinois AlaskaPennsylvania ** Florida Indiana CaliforniaVacant North Carolina Kansas Hawaii
South Carolina Minnesota IdahoVirginia Oklahoma
South DakotaTexas
* Chair Utah** Vice Chair Wyoming
OtherOntario, QuebecFHWA, AASHTO Liaison
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Task Force Participation
Year Spring Fall | Year Spring Fall1990 17 17 | 1997 20 161991 14 16 | 1998 16 171992 15 16 | 1999 17 171993 16 13 | 2000 18 181994 19 18 | 2001 18 171995 18 18 | 2002 17 191996 17 14 | 2003 17
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Special Recognition
Phil Thompson
FHWA Secretary to Task Force 1989 - 2003
Retiring June 2003
Phil has provided 14 years of dedicated and distinguished service to the Task Force.
The FHWA will appoint a new secretary soon.