Ashrae Duct Fitting Database Version. 6.00.05 !!top!! Guide

ASHRAE Duct Fitting Database (DFDB) version 6.00.05 is the critical maintenance release of the version 6 software, widely used by HVAC engineers for calculating pressure losses in duct systems

Recommended fields for software import: fitting_type, geometry_params (structured), loss_type, loss_value, Re_min, Re_max, units, reference, version.

2. Expanded Fitting Library

Version 6.00.05 includes over 550 unique fitting configurations, up from approximately 450 in version 5.x. New additions include: ashrae duct fitting database version. 6.00.05

The database provides loss coefficient tables for over 200 types of fittings, including: ASHRAE Duct Fitting Database (DFDB) version 6

This specific version is frequently cited in technical procurement specifications (such as those for the Hanford Site) as the mandatory standard for calculating fitting loss coefficients. Usage in Duct Design applicable flow regimes

2. Key contents in v6.00.05

Updated numeric tables for pressure-loss coefficients (K) for a broad set of fittings.
Clarified definitions for geometric parameters (e.g., centerline radius, R/D, takeoff angle).
Inclusion of additional transition and rectangular fitting entries (broader size/shape coverage).
Corrected typographical and unit inconsistencies found in earlier builds.
Metadata fields for each fitting entry: fitting type, geometry parameters, applicable flow regimes, K or Le/D, reference/source, and version stamp.