Framing & StructuralCâu 367 / 700
CALCULATION: A stairway must rise a total of 112 inches from finished floor to finished floor. Using the 7-3/4 inch maximum riser height, what is the MINIMUM number of risers required?
a.13 risers
b.14 risers
c.15 risers
d.16 risers
Giải thích
Divide total rise by the maximum riser: 112 / 7.75 = 14.45, which must round UP to 15 risers so each riser stays at or below 7-3/4 inch (112 / 15 = 7.47 inch). Thirteen or fourteen risers would exceed the maximum height, and 16 is more than the minimum needed.
Trích dẫn luật: 2025 CA Residential Code §R311.7.5.1Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- Besides the ledger fasteners, the code requires a lateral load connection between the deck and the house structure. What does this connection primarily prevent?
- On a raised residential deck, guards are required, and the guard infill (balusters/pattern) must be designed so that which object cannot pass through?
- Why must deck framing lumber in contact with the weather and near the ground be pressure-preservative-treated or naturally durable?
- CALCULATION: A stair has 15 risers. Using a 10-inch tread depth, what is the total horizontal run of the flight (number of treads times tread depth)?
- CALCULATION: A roof area of 200 square feet is subject to a net wind uplift pressure of 15 pounds per square foot. What total uplift force must the connections in that area resist?
- At the top and bottom of a residential stairway, a floor or landing is required. What is the MINIMUM dimension of that landing measured in the direction of travel?
Cập nhật gần nhất: · quy trình kiểm tra
Đội Ngũ Biên Tập PrepPass · Đối chiếu với California CSLB General Building (B) Trade Examination · Quy trình kiểm tra