LEED AP Building Design and Construction (BD+C) Practice Exam

What is the typical permitted distance for Environmental Tobacco Smoke (ETS) control?

1. 15 feet

2. 25 feet

3. 35 feet

4. 50 feet

The correct answer is: 25 feet

The typical permitted distance for Environmental Tobacco Smoke (ETS) control is 25 feet. This distance is established as a guideline to minimize the effects of secondhand smoke on building occupants. Adhering to this distance helps ensure that areas designated as smoke-free are adequately protected from smoke drifting from outdoor smoking areas. When planning smoking areas, placing them at least 25 feet away from building entrances, operable windows, and ventilation intakes is crucial to reduce the likelihood of ETS infiltration into the building. This approach aligns with strategies aimed at promoting a healthy indoor environment and safeguarding the well-being of those who do not smoke. In contrast, other distances, such as 15, 35, or 50 feet, may not provide the same level of protection specified in the guidelines. While shorter distances might seem practical, they are unlikely to adequately mitigate the risks associated with ETS exposure. Additionally, distances longer than 25 feet, while potentially beneficial, could be impractical in urban settings where space is limited. Hence, the 25-foot standard strikes a balance between feasibility and effective smoke control.