Which chapter of the code deals with site-built masonry fireplaces?

The correct choice is Chapter 10, as this chapter specifically addresses the requirements for masonry fireplaces, including design, construction, and installation standards. This chapter covers essential aspects of site-built masonry fireplaces to ensure they are safe and compliant with building codes. It provides details on materials, clearances, venting, and other critical elements necessary for the effective functioning and safety of masonry fireplaces in buildings. Understanding the particulars of this chapter is crucial for anyone involved in the design or installation of masonry fireplaces, as it helps guarantee that they adhere to the established safety and performance standards outlined in the North Carolina Mechanical Code.