How much pressure in psi does each foot of head correspond to?

Each foot of head in a fluid system is equivalent to approximately 0.433 psi of pressure. This relationship is derived from the hydrostatic pressure formula, which states that pressure increases with depth due to the weight of the fluid above it. Specifically, 1 foot of water exerts a pressure of about 0.433 pounds per square inch on a surface due to gravitational force acting on the water column.

This conversion is crucial in wastewater management systems where understanding the pressure at different points in the system can influence pump selection and system design. The value of 0.433 psi per foot is a standard in hydraulic calculations and is widely accepted in the engineering community.