Which of the following is a key requirement for barrier-free design in Japanese public buildings

Which of the following is a key requirement for barrier-free design in Japanese public buildings

 Which of the following is a key requirement for barrier-free design in Japanese public buildings, as specified by the Building Standards Act?

A. Minimum ceiling height of 2.5 meters

B. Wheelchair-accessible ramps with a maximum slope of 1:12

C. Minimum door width of 0.8 meters

D. Natural lighting in all rooms

E. Sound insulation of 40 dB

Answer: B

Explanation: The Japanese Building Standards Act mandates barrier-free design for public buildings to ensure accessibility for people with disabilities. Wheelchair-accessible ramps must have a maximum slope of 1:12 (1 unit rise per 12 units run), which is a specific requirement frequently tested in the exam.