What type of alteration is required if only the car platform or car frame is modified?

When considering alterations to the car platform or car frame of an elevating device, it falls under the category of a major alteration. Major alterations are defined as changes that could affect the safety, operation, or performance of the elevating device. Modifying the car platform or frame can influence the weight distribution, structural integrity, and overall functionality, making it critical to treat such changes with significant concern for safety and regulatory compliance.

In contrast, minor alterations typically involve less critical components or adjustments that do not impact the primary safety and operational characteristics of the equipment. Options such as none or temporary alterations do not adequately capture the substantial nature of modifying such critical components. Therefore, the requirement for a major alteration is rooted in the need for safety assurances and adherence to regulatory standards when handling modifications to essential structural elements of elevating devices.