2003 mtg Hydrology and Hydraulics by xV43uA2v

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									               AASHTO
            Subcommittee on Design
             Boston, Massachusetts
                 June 12, 2003

                  Report from
                 Task Force on
            Hydrology and Hydraulics
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     Highway Drainage Guidelines
       Model 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



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        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

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   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.



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       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

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             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



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            Task Force Membership
 Region 1          Region 2         Region 3    Region 4
 Maryland *        Arkansas         Illinois    Alaska
 Pennsylvania **   Florida          Indiana     California
 Vacant            North Carolina   Kansas      Hawaii
                   South Carolina   Minnesota   Idaho
                   Virginia                     Oklahoma
                                                South Dakota
                                                Texas
 * Chair                                        Utah
 ** Vice Chair                                  Wyoming
Other
Ontario, Quebec
FHWA, AASHTO Liaison


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            Task Force Participation
            Year   Spring   Fall   |   Year   Spring   Fall
            1990       17    17    |   1997       20    16
            1991       14    16    |   1998       16    17
            1992       15    16    |   1999       17    17
            1993       16    13    |   2000       18    18
            1994       19    18    |   2001       18    17
            1995       18    18    |   2002       17    19
            1996       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.

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