A pretest field inspection includes all of the following EXCEPT?

A pretest field inspection is a critical step to ensure that a piping system has been installed correctly and is compliant with both the drawings and specifications. This inspection aims to verify various factors that affect the integrity and functionality of the piping system.

In the context of the question, verifying that the piping system matches the drawings, ensuring that piping components are consistent with the specifications, and confirming that proper gaskets are installed are all essential aspects of the pretest inspection process. Each of these checks helps confirm the structural and operational integrity of the system, which is necessary to avoid leaks and ensure the system's efficiency.

The mention of a vent at the low point of the system is not typically part of a pretest field inspection, as it does not directly relate to initial verification checks. Instead, having vents in specific locations is often considered during the design and installation phases to ensure proper drainage and air management within the system. Consequently, the presence or absence of a vent at the low point would not be a standard element assessed during a pretest field inspection.