Question 81

Non-potable water piping and outlets shall be adequately and durably identified by a minimum size lettering of 1/2 inch.

Non-potable water piping and outlets require a minimum lettering size of 1/2 inch for proper identification. This specification ensures that the markings are visible and clear to users, helping to prevent accidental use.

A) 1/2 inch

This option is correct as it meets the requirement for adequate and durable identification of non-potable water piping and outlets. The 1/2 inch size is specified to ensure that the lettering is large enough to be easily read, thus promoting safety and awareness.

B) 3/4 inch

While 3/4 inch lettering may provide better visibility than the minimum requirement, it exceeds the mandated size for identification. Therefore, it does not comply with the specified minimum and is not the correct answer.

C) 1 inch

This option, like 3/4 inch, exceeds the minimum size requirement of 1/2 inch. Although it would be visible, it is not necessary to use this larger size since the regulation specifies only a minimum of 1/2 inch.

D) 1 1/2 inches

Choosing 1 1/2 inches significantly exceeds the minimum requirement and is not necessary for compliance. While it may enhance visibility, it is not the stipulated minimum size for labeling non-potable water piping.

Conclusion

The correct answer is 1/2 inch because it is the minimum size required for adequately identifying non-potable water piping and outlets. Options B, C, and D exceed this requirement without necessity, rendering them incorrect in the context of the question. Therefore, 1/2 inch is the definitive choice to ensure proper identification while complying with regulations.