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  • Users: aspultor
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  1. aspultor

    Use of AASHTO Distribution Factors for bridges w/ narrow lanes (<12')

    Hello, I have a question regarding the appropriate usage of the AASHTO LRFD distribution factors for a bridge with narrow lanes. For bridges in an urban environment, lane widths of less than 12' are commonplace. I am currently designing a bridge where the roadway engineer has specified a lane...
  2. aspultor

    HEC-RAS 4.1 - Bridge High Flow Analysis - Sluice Gate vs Orifice?

    I am modeling an existing bridge with a tailwater below the low chord and a headwater above the low chord. My understanding is that the appropriate modeling method is pressure/weir. The low tailwater condition is causing HEC-RAS to use a sluice gate equation to calculate the bridge headwater...

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