The desktop version of the ASHRAE DFDB often stores its backend data in a structured database format (like Microsoft Access .mdb or an SQL variant). Go to Excel's tab.
| Resource | Format | Link Access | Reliability | | :--- | :--- | :--- | :--- | | | CSV / Excel | Search "hvac fitting loss coefficient csv" | Medium (Community curated) | | Engineers Edge Duct Fitting | Web Tables | engineersedge.com/fluid_flow/duct_fitting.htm | High for basic elbows/tees | | CIBSE Guide C (UK equivalent) | PDF + XLS | CIBSE store (paid, but cheaper than ASHRAE) | Very High (British standard) | ashrae duct fitting database excel link
To build an automated, ASHRAE-aligned duct sizing and static pressure calculation sheet in Excel, follow this structured setup. Step 1: Establish Your Data Sheets Create a multi-tab workbook to keep your project organized: The desktop version of the ASHRAE DFDB often