Place the tower

1. Choose Build > Stair Tower.
2. Check the Footprint in Build Preferences. If it is unavailable, the current system has no compatible tower.
3. Click to set the tower anchor.
4. Move the pointer to choose the stair direction, then click again to build.

The tower keeps its access faces clear and enables access protection. Ground and foundation checks must pass before placement is accepted.

If placement is rejected, the anchor remains available for another attempt. Select the tower and open Access settings to inspect or change its access arrangement.