Each end of a platform shall extend over the centerline of its support by at least how many inches?

The requirement for a platform's extension over the centerline of its support is critical for ensuring stability and safety. Extending at least 6 inches over the centerline provides sufficient support for the platform and helps distribute loads evenly. This extension minimizes the risk of tipping or collapsing, especially when weight is applied or when someone is working on the platform. This standard is typically derived from safety regulations and construction codes that focus on preventing accidents and ensuring worker safety on elevated structures.

In contrast, other measurements fail to align with the established safety guidelines which specify the minimum required extension needed for adequate platform support and stability during use.