Final answer:
For each foot of elevation, a pressure of 0.433 PSI is added due to the hydrostatic pressure of the water column above the discharge point.
Step-by-step explanation:
For every 1 foot the tank is above the discharge outlet, 0.433 PSI of pressure is generated. This is because pressure due to the weight of the water increases by 0.433 pounds per square inch (PSI) for every foot of elevation above the discharge point. The equation derived from hydrostatic pressure principles is P = ρgh, where P represents the pressure, ρ is the density of the fluid (in this case, water), g is the acceleration due to gravity, and h is the height of the water column above the point of measurement. When considering a standard liquid like water at room temperature and standard gravity, the height in feet can be directly related to pressure in PSI using the factor of 0.433.