HY-8 Culvert Hydraulic Analysis Program Version 7.80.2 [supporting software]

Details

• Corporate Creators:
  United States. Federal Highway Administration. Office of Bridges and Structures
• Contributors:
  Lizewski, Ryan
• Subject/TRT Terms:
  Analysis Culverts Design Hydraulics Software Packages
• 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.
  
  Bugs addressed: Addressed a low flow channel calculation in the AOP module causing a crash. Adjusted the display of the selected profile instead of defaulting to the overtopping profile. Fixed the display of the question mark (?) icon for the user’s manual, which did not appear in the Energy Dissipation module for some screen resolutions. Addressed metric rating curves being compared to the invert elevation before being converted. Fixed issue with report generation failing on names with quotes (‘ or “) in the name. Fixed issue where roadway crest was modified when saved and read from a file. Fixed issue where the diameter on an embedded circular culvert was lost when saved and read from a file. Fixed issue where the wrong flow area was computed for a given depth. Fixed incorrect area of pipe arch listed for display. Fixed incorrect geometry for a pipe arch. Improved iteration success rate to 99.8% in testing most problematic cases; a failure caused a decrease in HW with increased discharge. This problem was resolved. Fixed issue where selecting an inlet edge type caused HY-8 to crash. Fixed issue where duplicating a culvert barrel on a crossing with multiple discharges crashed. Modified HY-8 to not allow the user to try (and fail) to generate a report where the filename exists and is locked.
  
  Adjusted some language in the user’s manual.
  
  Fixed minor issues in the Bridge scour combo boxes.
  
  
• 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
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:fb36efccb5ec0bcaa7f52ff3e5a494c1340d88a351bfe4ac7c28b5860948ebe0cecc46e435ff4ee5e15cf961275fdfd1c3ca7739a882b368636b4d51055d2194
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/88714/dot_88714_DS1.zip
• File Type:
  [ZIP - 135.03 MB ]