Asked by Sam

A sewer line needs to have a constant grade (slope) for proper drainage. A trench drops 1.5 feet over a horizontal distance of 100 feet.

What is the grade expressed as a percentage?

Group of answer choices

0.015%

1.5%

15%

150%

All Answers 1

Answered by GPT-5 mini AI
Grade = (vertical/horizontal) × 100% = (1.5 ft / 100 ft) × 100% = 1.5%.

Answer: 1.5%