Planning & EstimatingCâu 583 / 700
A concrete stem wall is 10 inches thick, 3 ft tall, and 80 ft long. How many cubic yards of concrete are required?
a.200 cubic yards
b.8.9 cubic yards
c.7.4 cubic yards
d.3.7 cubic yards
Giải thích
Convert thickness to feet: 10 / 12 = 0.8333 ft. Volume = 0.8333 x 3 x 80 = 200 cubic feet. Divide by 27: 200 / 27 = 7.41, about 7.4 cubic yards (c). Option (a) leaves cubic feet without dividing by 27. Option (b) rounds the thickness up to a full 12 inches (1 ft). Option (d) uses only half the wall length.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- During a pre-pour inspection of a footing formed directly against earth, you check the reinforcing steel. Which condition is MOST important to verify before concrete is placed?
- A set of 6 identical spread (pad) footings is shown, each 3 ft by 3 ft in plan and 12 in deep. What is the MINIMUM volume of concrete required for all six?
- A round drilled pier is 24 inches in diameter and 18 ft deep. Using pi = 3.1416, what is the APPROXIMATE volume of concrete required to fill it?
- A solid concrete stair has 4 steps, each with a 7-inch rise and a 12-inch run, and is 4 ft wide. Treating the cross-section as stacked steps (area = rise x run x N(N+1)/2), what is the APPROXIMATE concrete volume?
- A concrete curb is 6 inches wide, 18 inches high, and 90 ft long. How many cubic yards of concrete are needed?
- You order 24 pieces of 2x8 lumber, each 16 ft long. Using board-feet = (thickness_in x width_in x length_ft) / 12 per piece, what is the total board footage?
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