Core TradesCâu 100 / 700
A clothes dryer exhaust duct is run with several sharp bends and a long concealed length, then vented into an attic. Two problems with this install are:
a.It saves energy and looks neater
b.It increases airflow and dries faster
c.Lint buildup and moisture create a fire and mold hazard, and terminating in the attic is not permitted
d.It reduces the dryer's electrical load
Giải thích
Excess length and sharp bends trap lint (a fire hazard) and reduce airflow, and discharging moist, lint-laden air into an attic causes moisture/mold damage and is not allowed; dryer ducts must terminate outdoors. It does not save energy, speed drying, or reduce electrical load.
Trích dẫn luật: 2025 CA Mechanical CodeLuyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
Câu hỏi liên quan cùng chủ đề
- A large commercial kitchen exhaust hood removes a high volume of air. Without makeup air, the space goes into strong negative pressure. The BEST solution is to:
- During a split-system AC installation, the refrigerant line set is run with several tight kinks and an excessively long distance beyond the manufacturer's limit. The MOST likely result is:
- CALCULATION: A room measures 20 ft by 15 ft with a 10-ft ceiling. A ventilation system supplies 500 cubic feet per minute (CFM). Approximately how many air changes per hour (ACH) does this provide?
- A high-efficiency (condensing) furnace produces acidic condensate. This condensate must be:
- Supply and return ducts installed in an unconditioned attic are typically required to be insulated and sealed MAINLY to:
- At the intersection of two sloping roof planes, water collects and flows in a channel. The flashing installed in this channel is called:
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