Construction Supervisor License Practice Exam

Light transmitting plastic glazing of unprotected openings should not be installed more than how many feet above mean grade in an un-sprinkled building?

1. 30

2. 50

3. 75

4. 90

The correct answer is: 75

Light transmitting plastic glazing of unprotected openings is subjected to specific height limitations in un-sprinkled buildings to ensure safety and compliance with fire codes. This limitation is rooted in the potential fire hazards and the ability for flames and smoke to accumulate, making it critical to prevent the installation of such materials beyond a certain elevation. In un-sprinkled buildings, where automatic fire suppression systems are absent, the risk of fire spreading and compromising safety becomes a primary concern. The maximum height of 75 feet above mean grade provides a balance between allowing natural light and maintaining a safeguard against fire hazards, given that higher openings might not be as effectively protected from flames and smoke infiltration. This regulation is designed to ensure construction practices prioritize fire safety while permitting designs that allow for light transmission where appropriate. Therefore, the choice of 75 feet aligns with established standards and guidelines to manage potential risks in the event of a fire, particularly in structures lacking sprinkler systems.