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Scour at Wide Piers and Long Skewed Piers (2011) / Chapter Skim
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Pages 53-54

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 53...
... L/T2 K3 Factor for mode of sediment transport -- -- K4 Factor for armoring by bed material -- -- Ks Pier shape factor -- -- Kθ Discharge approach angle correction -- -- Kw Wide pier correction factor -- -- q Average discharge intensity upstream from ft3/s (m3/s) L3/s the bridge q2 Local discharge intensity in contracted channel ft3/s (m3/s)
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From page 54...
... FT2/L4 σg Geometric standard deviation of particle size – -- distribution τ1 Grain roughness component of bed shear stress lbf/ft2 (kPa) F/L2 τc Critical shear stress at threshold of motion lbf/ft2 (kPa)
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Key Terms

  • critical shear
  • scour depth
  • shear stress
  • shear velocity
  • main channel

  • critical velocity
  • approach flow
  • upstream main
  • discharge intensity
  • regime depth

  • pier shape
  • bed shear
  • local discharge
  • pier correction
  • dependent scour

  • equilibrium scour
  • shape factor
  • channel width
  • grain roughness
  • average depth

  • specific gravity
  • units dimensions
  • time dependent
  • hydraulic radius
  • average velocity

  • intensity upstream
  • fdi densimetric
  • particle froude
  • skew angle
  • correction factor


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