How much pressure (in psi) does 1 foot of elevation provide?

The correct answer is 2.31 psi for every foot of elevation gained. This value is derived from the basic principle of hydrostatic pressure, which states that pressure increases with the depth of a fluid column due to the weight of the fluid above it.

In water systems, each foot of elevation corresponds to a specific pressure due to the weight of the water. The calculation for this pressure is based on the density of water, where one cubic foot of water weighs approximately 62.4 pounds. The formula for converting elevation height in feet to pressure in psi (pounds per square inch) involves the relationship that for water, approximately every foot of elevation gains about 0.433 psi. Therefore, when you multiply 0.433 psi by the number of feet of elevation (1 foot), you arrive at roughly 0.433 psi per foot, but more commonly used overall is the fact that 1 foot of elevation provides around 2.31 psi of pressure.

This standard reference is essential in water distribution systems, where elevation changes can significantly impact the pressure experienced at various points in the system. Understanding this relationship is crucial for ensuring adequate water pressure in municipal and industrial applications, particularly in situations where elevation changes occur, such as in h