Question 88

Gas piping must extend outside the building by at least 4 inches.

When gas piping is located beneath a building, it is required to be encased in a conduit that extends outside the building by a minimum of 4 inches to ensure safety and accessibility.

A) 4 inches

This option is correct as it aligns with the requirement for gas piping encased in conduit beneath a building. The regulation specifies that the conduit must extend outside the building by at least 4 inches to allow for proper ventilation and to facilitate maintenance.

B) 8 inches

This option is incorrect because the requirement does not specify an 8-inch extension for gas piping conduits. A longer extension than necessary could lead to unnecessary complications or costs, as the established standard is 4 inches.

C) 12 inches

This option is incorrect as well, as the requirement for gas piping conduits does not demand a 12-inch extension outside the building. Such an extension exceeds the mandated requirement and could create unnecessary logistical challenges.

D) 48 inches

This option is also incorrect. Extending the conduit by 48 inches is far beyond what is required and does not reflect the regulatory guidelines. This could lead to excessive material use and unnecessary modifications to the building structure.

Conclusion

The requirement for gas piping to extend outside the building by at least 4 inches is explicitly outlined in safety regulations. Other options, while they may suggest additional safety measures, do not align with the established standard and could lead to inefficiencies. Therefore, option A is definitively the correct answer.