Drainage, Waste & VentCâu 27 / 120
A branch serves one water closet at 4 DFU, one lavatory at 1 DFU, one bathtub with shower at 2 DFU, and one kitchen sink at 2 DFU. What is the total DFU load on that branch?
a.7 DFU
b.9 DFU
c.11 DFU
d.12 DFU
Giải thích
The loads add directly: 4 + 1 + 2 + 2 = 9 DFU. Seven omits the kitchen sink, while 11 and 12 overstate the total by counting a fixture twice or by using a higher water closet value than the one given in the problem.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A basement floor is below the elevation of the next upstream manhole on the public sewer. What device is required to protect the fixtures on that floor?
- A 3 in horizontal branch must gain 4-1/2 in of fall between two fixed points. At the minimum slope for 3 in pipe, what is the longest run that produces exactly that fall?
- A 4 in horizontal drain is sized to carry a load of drainage fixture units. Which pipe run carries the greatest DFU load for a given diameter?
- A horizontal fixture branch serves three lavatories only. Any branch that receives the discharge of a water closet must be at least what size?
- A 1-1/4 in trap arm serves a small lavatory. The vent is located 3 ft of developed length from the trap weir. What is the correct evaluation?
- A row of five lavatories on a common horizontal branch in a public restroom is vented by a single vent connected between the last two fixture drains. What type of venting is this?
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