What type of pressure should connecting offices and waiting rooms maintain relative to an enclosed public parking garage?

Connecting offices and waiting rooms should maintain positive pressure relative to an enclosed public parking garage to ensure a safe and comfortable environment for occupants. This positive pressure helps prevent the ingress of potentially harmful gases, fumes, or other contaminants that may be present in a parking garage due to vehicle emissions.

By maintaining positive pressure, any air leakage will occur from the offices and waiting rooms into the garage, rather than vice versa, ensuring that the cleaner indoor air is not compromised by the often less clean air found in enclosed parking spaces. This is particularly important in healthcare settings or places where people may be spending extended periods of time, as it directly influences air quality and overall occupant safety.

Negative pressure, while useful in certain situations to contain contaminants, would allow air from the parking garage to flow into the offices and waiting rooms, which is undesirable. Neutral pressure doesn't provide any significant benefit for air quality control in this context, and variable pressure could lead to inconsistent air quality, making it less effective. Therefore, maintaining a consistent positive pressure is the most effective strategy in this scenario.