Distance Factor (Fd): The effective horizontal distance was 6.1 m.
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Referring to the guidelines given, the effective vertical distance was 8.8 m.
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Similarly, the effective distance for the four 90° elbows was 12.2 m.
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Consequently, the total effective horizontal distance was calculated as 27.1 m.
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Referring to figure 1, the Fd factor was determined to be 0.8.