What is the difference in elevation when Point "A" reads 15 ft and Point "B" reads 10 ft?

To determine the difference in elevation between Point "A" and Point "B," you subtract the lower elevation from the higher elevation. In this case, Point "A" has an elevation of 15 feet, while Point "B" has an elevation of 10 feet.

The calculation is as follows:

15 ft (Point A) - 10 ft (Point B) = 5 ft

This shows that the difference in elevation between the two points is indeed 5 feet. This concept is crucial for understanding topographic changes in various construction and surveying applications, as elevation differences can significantly impact drainage, building design, and overall site development.