Additions and alterations to a mechanical system must conform to requirements for what?

When considering additions and alterations to a mechanical system, it's important that these modifications comply with the requirements for new systems. This ensures that any updates or changes will meet current codes and standards, which are designed to ensure safety, efficiency, and environmental compliance.

The rationale behind this is that over time, building codes and mechanical standards evolve to incorporate new technologies, materials, and practices that improve system performance and safety. By treating additions and alterations as new systems, it guarantees that the entire mechanical system remains compliant with the latest regulations, even if parts of the system were installed under older codes.

This approach helps prevent issues that could arise from using outdated standards and ensures that all components of the mechanical system work cohesively and safely. It is key to create a reliable, efficient, and safe mechanical system regardless of when the components were originally installed.