69. The type of construction that uses materials that can withstand fire for AT LEAST 2 hours is
Answer: D
Fire-resistive construction uses materials that can withstand fire for at least 2 hours.
Fire-resistive construction is specifically designed to endure fire exposure for a minimum of two hours, making it the appropriate choice for this question.
A) frame
Frame construction typically uses wood and other combustible materials, which do not offer significant fire resistance. Therefore, this option does not meet the requirement for materials that can withstand fire for at least two hours.
B) non-combustible
While non-combustible materials are resistant to catching fire, the term does not specifically indicate a time duration for fire resistance. Non-combustible materials alone do not ensure that they can withstand fire for the minimum duration of two hours as required in this context.
C) masonry
Masonry construction involves materials such as brick and concrete that provide a degree of fire resistance. However, masonry alone does not guarantee a fire-resistance rating of at least two hours, as the performance can vary based on the specific materials and construction methods used.
D) fire-resistive
Fire-resistive construction is designed to withstand fire for a specific duration, typically at least two hours. This classification indicates that the materials and assembly can provide the necessary protection against fire, making this the correct choice.
Conclusion
Fire-resistive construction is the only option that explicitly meets the requirement of withstanding fire for a minimum of two hours. The other options either utilize materials that are combustible, do not specify a duration, or may not achieve the necessary fire-resistance rating, thereby failing to satisfy the question's criteria.