Construction Supervisor License Practice Exam

What type of fire rating does Type X gypsum board provide?

1. Non-combustible

2. Fire-resistant

3. Moisture-resistant

4. Acoustic-rated

The correct answer is: Fire-resistant

Type X gypsum board is specifically designed to have enhanced fire-resistant properties compared to regular gypsum board. This type of board is manufactured with additives that increase its fire resistance, allowing it to withstand exposure to fire for a longer period. The fire resistance rating of Type X gypsum board is critical in various building applications, particularly in walls, ceilings, and floors where fire safety is a concern. It can provide up to a one-hour or greater fire resistance rating, depending on its thickness and the construction assembly in which it is used. This characteristic is crucial for meeting building codes and ensuring the safety of occupants by slowing the spread of fire and providing additional time for evacuation. The other options do not accurately describe the properties of Type X gypsum board. While it is not non-combustible, it is much more resistant to fire compared to standard gypsum board, thus affirming its classification as fire-resistant. Moisture-resistant boards exist separately and do not provide the same fire resistance characteristics. Similarly, acoustic-rated boards focus on sound control rather than fire resistance. Hence, fire-resistant is the accurate and most relevant classification for Type X gypsum board.