Which of the following is a requirement for the design of staircases in Japanese high-rise buildings

Which of the following is a requirement for the design of staircases in Japanese high-rise buildings

Which of the following is a requirement for the design of staircases in Japanese high-rise buildings, as per the Building Standards Act?

A. Minimum tread width of 250 mm

B. Maximum riser height of 200 mm

C. Minimum width of 1.0 meter for staircases serving more than 50 people

D. Handrail height of 0.8 meters

E. No landing required between flights

Answer: C

Explanation: The Building Standards Act specifies that staircases in high-rise buildings serving more than 50 people must have a minimum width of 1.0 meter to ensure safe evacuation during emergencies. Tread width (minimum 280 mm) and riser height (maximum 180 mm) are also regulated, but option C is the correct specific requirement.