North Carolina Building Contractor License Practice Exam

Which type of door is commonly associated with hazardous locations?

1. Wood doors

2. Metal doors

3. Sliding glass doors

4. Solid core doors

The correct answer is: Sliding glass doors

In hazardous locations, doors must offer greater durability and safety features to withstand environmental stresses. Sliding glass doors, while not typically the default choice for hazardous areas, can be constructed with reinforced safety glass and can provide easy access and visibility. However, they are not the most protective option against external hazards. Metal doors, which are typically associated with hazardous locations, offer significant advantages due to their strength, durability, and fire resistance. They are commonly used in environments where impact resistance or security is a concern, thus making them a better match for these types of settings. Although sliding glass doors have their uses, particularly in commercial settings where visibility and aesthetics are prioritized, they fall short compared to metal doors in terms of robust protection against potential hazards. This fact highlights the importance of choosing the appropriate door type based on the specific demands of the environment in which it is installed.