Journeyman Plumber Exam 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 610

What slope is represented by a 2% grade?

1/4" per foot

A 2% grade indicates a slope where for every 100 units of horizontal distance, the elevation changes by 2 units. To convert this grade to an inch-per-foot measurement, we can perform the following calculation.

Since there are 12 inches in a foot, 2% can be expressed as 2 inches rise over 100 inches of run. This translates to a rise of 2 inches for every 100 inches (or 8.33 feet). To find the rise per foot, we can set up the ratio:

2 inches / 100 inches = x inches / 12 inches

Solving for x gives us:

x = (2 inches * 12 inches) / 100 inches = 0.24 inches

This is roughly 1/4 inch per foot when expressed as a fraction, which correlates with a slope of 2%.

Therefore, the correct understanding of a 2% grade corresponds to a rise of 1/4 inch per foot of horizontal distance, aligning with the provided answer.

Get further explanation with Examzify DeepDiveBeta

1/8" per foot

1/2" per foot

1/3" per foot

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