Version 60005 | Ashrae Duct Fitting Database

Those “converging 90-degree tees” that never matched field measurements? Re-tested and recalibrated. Early testing shows up to 12% difference in some coefficients compared to v10.12. For a large air handler, that’s real fan energy.

If you use AutoCAD MEP or Revit, the updated 60005 plugin fixes a persistent bug where dynamic pressure calculations would default incorrectly for metric (SI) workflows. The new version now passes the ASHRAE Standard 205 data model more cleanly, meaning fewer “Unknown Fitting” errors in your pressure drop reports. ashrae duct fitting database version 60005

A critical educational and functional aspect of the database is the distinction between friction and shock (dynamic) loss. While duct design software (like Revit or Carrier HAP) handles the straight-run friction loss via the Darcy-Weisbach equation, the DFD focuses on the Shock Loss. Version 6.0.005 excels at visualizing why a fitting loses energy. By isolating the turbulence created at the heel and throat of an elbow, the database provides data that helps engineers justify the cost of higher-grade fittings (like turning vanes or radius elbows) versus cheap, inefficient square-throat designs. For a large air handler, that’s real fan energy

Every designer has run into a custom fitting that isn’t covered by the standard tables. Version 60005 closes several long-standing gaps, including: A critical educational and functional aspect of the