- HY-8 Version 7.3 Build Date August 18, 2014. This version of the program incorporates a number of significant bug fixes pertaining to program freezes and report generation.
- HY-8 Version 7.2 Build Date January 17, 2012
- HY-8 Culvert Analysis Program - Phase Three of Development Efforts
HY-8 7.3 builds on previous versions of the software and incorporates improvements from user feedback. HY-8 7.3 expands the capabilities to analyze special hydraulic situations and culvert shapes and includes an upgrade to the source code to make the program run more smoothly and efficiently.
HY-8 is a 32-bit program, but it is fully compatible with 32 and 64-bit Windows-based operating systems (XP, Vista, and Windows 7) and runs in 32-bit mode on these operating systems. When installing HY-8, make sure you have permissions on your computer to install programs (usually this requires administrator permissions or a username and password for an administrator account). If you do not have administrator permissions on your account, you need to right-click on the installation program and select the "Run as Administrator" option if running Windows Vista or Windows 7. Windows XP users should login to an account that allows you to install software before installing HY-8.