According to the Japanese Building Standards Act

According to the Japanese Building Standards Act

According to the Japanese Building Standards Act, what is the minimum fire resistance rating required for the columns of a 10-story RC office building?

A. 1 hour

B. 2 hours

C. 3 hours

D. 4 hours

E. No specific requirement

Answer: B

Explanation: The Japanese Building Standards Act classifies buildings by height and usage. A 10-story RC office building (high-rise building, height ≥31m) requires columns with a minimum fire resistance rating of 2 hours to ensure structural stability during a fire, which is a mandatory requirement tested in the exam.