Which part focuses on the operations of sewage systems?

The correct answer focuses on the operations of sewage systems, specifically addressing standards and regulations related to sewage treatment and disposal. This part outlines the requirements for the design, installation, and maintenance of sewage systems to ensure they function safely and effectively, protecting public health and the environment.

Understanding this section is crucial as it encompasses essential guidelines that govern the operation and management of sewage systems, including technical specifications and performance standards that must be adhered to. These regulations help to mitigate risks associated with sewage management and ensure systems are constructed to meet local health and environmental standards.

The other options do not pertain specifically to the operations of sewage systems, as they cover other aspects of building design and construction, such as structural requirements or fire safety, rather than focusing directly on sewage management and operations.