Using the 10-20-30 rule, if the static pressure is 60 psi while flowing 600 gallons, what is the available water in gallons?

The 10-20-30 rule is a helpful guideline for estimating the amount of available water when working with fire suppression systems. This rule gives firefighters and pump operators a way to quickly assess how much water can be accessed under specific conditions of static pressure and flow rates.

In this case, the static pressure is 60 psi, and you are flowing 600 gallons. According to the 10-20-30 rule, if you have a static pressure of 60 psi, this indicates that you have sufficient available water as long as your flow does not exceed the value you are attempting to calculate.

For 60 psi, the expected available water would typically exceed the flow rate that is being used. When approaching this problem, the flowing 600 gallons correlates with the pressure and indicates that the system can handle that flow without running out of water. Thus, the total available water would equal the flowing amount, which leads to the conclusion that the available water is 600 gallons, making the option indicating that figure the correct answer.

This concept captures the essence of the 10-20-30 rule, which is about optimizing the available water supply based on the given static pressure during operation.