Invert level

[1] The invert is an important datum for determining the functioning or flowline of a piping system.

For example, the invert of a street sewer connection could affect the feasibility of adding a toilet in the basement of a house.

[2] An inverted arch is a rounded structure with its crown facing in the downward position.

[4] A pipe laser, or another vertical distance measuring device is most commonly used for this.

Invert levels are important for the drainage of a non-pressured fluid pipe.