What is categorized as a minor alteration Type B in an elevator installation?

The installation of glass in a car enclosure is categorized as a minor alteration Type B because it does not significantly affect the overall operation and safety of the elevator system. This type of change primarily pertains to enhancing the aesthetic appeal or visibility within the cab without altering the structural integrity or the functioning aspects of the elevator. Type B alterations are typically defined as modifications that can be implemented without the need for major renovations or upgrades to the elevator's core systems.

In contrast, replacing the elevator cab flooring or changing the elevator motor may introduce considerations related to safety standards, performance, or the functional capacity of the elevator, thereby falling outside the minor alteration classification. Upgrading the elevator control system often involves significant modifications that can directly impact the elevator's operation, making it a major alteration rather than a minor one.