QuestionJuly 24, 2025

16. When protecting a duct measuring 18''times 8'' what nozzles will be required? (3 Points) (2) 1W (1) W (1) 1 N (1) 2W

16. When protecting a duct measuring 18''times 8'' what nozzles will be required? (3 Points) (2) 1W (1) W (1) 1 N (1) 2W
16. When protecting a duct measuring 18''times 8'' what nozzles will be required? (3 Points)
(2) 1W
(1) W
(1) 1 N
(1) 2W

Solution
3.8(301 votes)

Answer

(2) 1W, (1) W, (1) 1N, (1) 2W Explanation 1. Calculate Duct Area The area of the duct is 18'' \times 8'' = 144 \, \text{square inches}. 2. Determine Nozzle Requirements Based on standard protection requirements for ducts, select nozzles that cover the calculated area. The specific nozzle types (e.g., 1W, W, 1N, 2W) are typically chosen based on manufacturer specifications and coverage patterns. 3. Match Nozzles to Coverage Needs Choose nozzles that collectively provide adequate coverage for the duct's area. This involves selecting from the given options: (2) 1W, (1) W, (1) 1N, (1) 2W.

Explanation

1. Calculate Duct Area<br /> The area of the duct is $18'' \times 8'' = 144 \, \text{square inches}$.<br /><br />2. Determine Nozzle Requirements<br /> Based on standard protection requirements for ducts, select nozzles that cover the calculated area. The specific nozzle types (e.g., 1W, W, 1N, 2W) are typically chosen based on manufacturer specifications and coverage patterns.<br /><br />3. Match Nozzles to Coverage Needs<br /> Choose nozzles that collectively provide adequate coverage for the duct's area. This involves selecting from the given options: (2) 1W, (1) W, (1) 1N, (1) 2W.
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