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                In-Situ Scour Testing Device (ISTD), State Demonstrations of Field Soil Tests, Franklin, VA
FHWA-HRT-23-007.pdf (782.13 KB)
      
  Publication Information
                  Publication Type:Fact Sheet
                  Publication Number:FHWA-HRT-23-007
              Abstract:The In-Situ Scour Testing Device (ISTD) is an advanced system designed by the hydraulics research team at the Turner-Fairbank Highway Research Center (TFHRC) to measure the erosion resistance of fine-grained, cohesive soils directly in the field. It features an innovative erosion head that, when inserted into a standard drill casing, can direct a horizontal radial water flow across the surface of the soil, resulting in erosion. The erosion resistance is measured in terms of a critical shear stress, which, when coupled with the decay of hydraulic shear forces (water loads) with scour depth, is the basis of the Federal Highway Administration’s (FHWA’s) NextScour research initiative for improving the accuracy of future bridge scour estimates.





Recommended citation: Federal Highway Administration, In-Situ Scour Testing Device (ISTD), State Demonstrations of Field Soil Tests, Franklin, VA (Washington, DC: 2022) https://doi.org/10.21949/1521950.
              Publishing Date:November 2022
              Posting Date:11/23/2022
                              Digital Object Identifier:https://doi.org/10.21949/1521950
              Author(s):Pagenkopf,
    
          James 
    
          (ORCID: 0000-0001-5392-8628)
              Alzamora,
    
          Daniel
              Publishing Office:Transportation Operations Applications Team
                  FHWA Program(s):Research
              Infrastructure
              AMRP Program(s):Bridges
              FHWA Activities:Transportation Management
              Subject Area:Bridges and other structures U.S. DEPARTMENT OF TRANSPORTATION

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