Ashrae Duct Fitting Database Excel Jun 2026

In Excel: = [@Coefficient] * (0.602 * ([@Velocity_FPM]/4005)^2) for IP units.

: Many engineers use the Darcy-Weisbach equation and loss coefficients found in older ASHRAE Handbook editions (2009 and older) to build custom Excel calculators, as newer coefficients are largely behind the DFDB paywall. Key Features of the ASHRAE Database Duct Fitting Database Lite App - ASHRAE ashrae duct fitting database excel

A dedicated sheet (usually named "Fittings") containing the raw data exported from the official ASHRAE database. This should include: In Excel: = [@Coefficient] * (0