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HY-8 Culvert Hydraulic Analysis Program Version 8.0.0 [supporting software]

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  • Corporate Creators:
    United States. Federal Highway Administration. Office of Bridges and Structures
  • Contributors:
    Lizewski, Ryan
  • Subject/TRT Terms:
  • Resource Type:
    Software
  • Right Statement:
    Public Domain
  • Geographical Coverage:
    United States
  • Corporate Publisher:
    United States. Federal Highway Administration. Office of Bridges and Structures
  • Abstract:
    HY-8 automates culvert hydraulic computations utilizing a number of essential features that make culvert analysis and design easier. An HY-8 User Manual is included with the software installation (access via 'Help' button on top toolbar) to provide important information on the technical features, capabilities, and limitations of the software.

    Improvements made to this version of the software include the following: Implemented new feature: Alternative culvert design analysis. Bugfix for hydraulic jumps with improper stationing when stationing is decreasing. Bugfix WSP profile selection. Bugfix with the report generator using the wrong index. Implement feature request to modify the page orientation, margin size, and line spacing of generated reports. Implement the "Project Headwater Summary Table" report element. Added HW/D to the Culvert Barrel Summary. Added "Essential Data Report" Format. Bugfix for unit conversion on USBR VI stilling basin energy dissipator. Bugfix for the wrong Manning's n value being used in full flow in certain circumstances. Bugfix for losing the constant roadway elevation. Bugfix for iterating on very small flows. Bugfix for issue selecting a user-defined shape with embedment. Bugfix for embedded user-defined culverts losing points and display in front-view plot. Bugfix for broken-back culvert data not refreshing with changes. Bugfix for units and computations with elliptical and pipe-arch culverts. Implemented feature request for a note in energy dissipation that we have culvert protection methods in the Hydraulic Toolbox. Bugfix for interpolation method in determining the inlet control depth. Bugfix for different water surface profile data when comparing the same culvert with different stationing values. Bugfix to handle changes in virtual earth. Bugfix for column headings swapped in report. Bugfix for depressed culvert being applied to a broken-back culvert. Bugfix for designing energy dissipation with a SAF basin that did not converge. Improved the USGS Flow Type chart.

  • Content Notes:
    By downloading the software, users acknowledge that they have read and agree to the following conditions: The application of this software is the responsibility of the user. It is imperative that the responsible designer understands the potential accuracy limitations of the program results, independently cross checks those results with other methods, and examines the reasonableness of the results with engineering knowledge and experience. There are no expressed or implied warranties. I agree to these conditions when downloading the software.

    National Transportation Library (NTL) Curation Note: This dataset has been curated to CoreTrustSeal's curation level "A. Active Preservation". To find out more information on CoreTrustSeal's curation levels, please consult their "Curation & Preservation Levels" CoreTrustSeal Discussion Paper" (https://doi.org/10.5281/zenodo.11476980). NTL staff last accessed this dataset at its repository URL on 2026-01-15. If, in the future, you have trouble accessing this dataset, please submit your question at https://transportation.libanswers.com. NTL staff will do its best to assist you at that time.

  • Format:
    ZIP
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  • Main Document Checksum:
    urn:sha-512:de788feeecc58d09af9c2d4db5553a6d5d537fc46c12c077c0f788354a7d5ab1146163ff9a20c47605876cea84ad1f7981a300e51dc82735f09309d1c3f17cb3
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  • File Type:
    Filetype[ZIP - 139.04 MB ]
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