What is the minimum water depth required around the strainer at a drafting site?

The minimum water depth required around the strainer at a drafting site is established to ensure efficient and effective operation of the fire pump while also preventing damage to the strainer. A depth of 24 inches around the strainer allows for adequate water flow and helps to avoid issues such as the introduction of air into the pump, which can lead to cavitation and poor performance.

This depth also provides a measure of safety, ensuring that the strainer is submerged enough to prevent debris from being drawn into the pump, which could lead to clogs or damage to the pump components. Additionally, having sufficient depth helps maintain consistent pressure in the vicinity of the strainer, which is crucial for successful drafting operations.