What is the pressure at the highest supply outlet 36 feet above a water meter with 80 psi available pressure?

To determine the pressure at the highest supply outlet located 36 feet above a water meter with an available pressure of 80 psi, we need to consider how elevation affects water pressure.

In plumbing, it is generally understood that for every vertical foot of height, water pressure decreases by approximately 0.433 psi. Therefore, to calculate the total pressure loss due to the elevation gain of 36 feet, we multiply 36 feet by 0.433 psi/foot:

36 feet * 0.433 psi/foot = 15.588 psi (which can be rounded to about 15.6 psi for simplicity).

Now, subtract this pressure loss from the original pressure available at the water meter:

80 psi - 15.6 psi = 64.4 psi.

Rounding this value gives us approximately 62 psi. This matches the answer choice indicated, which is why it is correct.

Understanding the effect of elevation on water pressure is crucial in plumbing design, as it helps ensure that outlets receive adequate pressure for functionality.