Which procedure is involved in drain testing?

In drain testing, the procedure that involves filling with water and observing for vortex formation is significant because it helps assess the drainage system's flow characteristics and efficiency. When water is introduced into the drain, monitoring for vortex formation indicates how well the drainage is functioning. A well-designed drainage system will allow water to flow smoothly without creating disruptive turbulence, as excessive vortex formation can suggest blockages or inefficiencies in the flow path.

Understanding the dynamics of water flow through the drain is crucial for determining whether the system can handle its intended capacity. This method allows technicians to identify potential issues before they become more serious problems, such as clogs or backups.