Instant Darcy-Weisbach velocity and friction loss for any pipe size and flow. Pass/fail badges against ASHRAE recommended limits.
| Application | Max Velocity | Notes |
|---|---|---|
| Pump suction | 3 ft/s | Prevent cavitation and noise |
| Branch / zone supply | 4 ft/s | Low-noise terminal units |
| Main distribution headers | 8 ft/s | ASHRAE recommended maximum |
| Condenser water | 10 ft/s | Larger pipe, higher tolerance |
| Friction loss target | 1–4 ft/100ft | Design target for sizing |
| Friction loss max | 4 ft/100ft | Above this → velocity noise risk |
This calculator handles one step. AIM Works runs the complete MEP design workflow — thermal load calculations, duct & pipe networks, equipment selection, code compliance, and an AI design assistant — in one tool.