[Plumbing Expert] How should the vertical zoning of a hotel water supply system be done?

[Plumbing Expert] How should the vertical zoning of a hotel water supply system be done?

Typically, one zone is provided every 4-5 floors, controlled by pressure-reducing valves. Avoid too many zones, which increases shaft area, and also prevent too few zones, which causes excessively high static pressure on the lower floors. In luxury hotels, the ground-floor lobby must be considered separately.