Massachusetts Plumbers Journeyman Practice Exam

What is the maximum allowable distance between stacks in an open parking garage?

1. 30 feet

2. 40 feet

3. 50 feet

4. 60 feet

The correct answer is: 60 feet

The maximum allowable distance between stacks in an open parking garage is established to ensure proper ventilation and to prevent the buildup of harmful gases. In Massachusetts, this distance is specified as 60 feet. This regulation is important because it helps to maintain air quality and safety in parking structures, ensuring that exhaust fumes have adequate space to disperse. A distance of 60 feet facilitates good airflow and minimizes the risk of gas accumulation, which can be hazardous to health. In contrast, shorter distances might not provide sufficient ventilation, leading to potential safety issues. A greater distance also accounts for the design and potential expansion of the garage, accommodating future needs without compromising safety standards.