Tutorials › Plumbing › Adjust Drainage Slope
Adjust Drainage Slope
💡 Propagate the code-required grade across the whole drainage network without editing pipe by pipe.
What it does
Adjust Drainage ▸ Adjust Drainage Slope recalculates the grade of a drainage/vent/storm network to code, without breaking connections. You select the network and an anchor; Fluxor propagates the code slope — Ø≥100 mm = 1%, Ø<100 mm = 2%, venting = 1% climbing to the stack — across the whole connected network, keeping fixed elements (toilets, drains…) in place and the floor drain box consistent. It does not slope cold water or hot water networks.
When to use it
After moving, editing or automatically routing a drainage network when the slope ended up wrong, or whenever the layout changes and the grade has to be recalculated.
Prerequisites
- Drainage, vent or storm network already modeled and connected.
- Being in a plan or 3D view where the network is visible.
- Knowing which run/outlet should serve as the anchor for the calculation.
Video
Common errors
| Symptom | Likely cause | Solution |
|---|---|---|
| The command does not recalculate the whole network | The selected run is disconnected from the main network | Confirm connectivity between the runs before running the command |
| The applied slope looks excessive | Wrong anchor chosen | Run the command again choosing the correct anchor |
| Cold/hot water was not affected | Expected behavior — the command only adjusts drainage, venting and storm water | Nothing to do |
| Button greyed out | License without the Plumbing · Adjust Drainage feature | Check your license / contact support |