Which type of concrete components require a safety factor of 2.25 for lifting and bracing inserts?

The requirement for a safety factor of 2.25 for lifting and bracing inserts in concrete components is particularly relevant for panels, columns, barriers, and plinths. These components are typically structural elements that bear loads and require careful consideration during lifting operations.

In rigging and lifting operations, a higher safety factor signifies a greater assurance against failure, taking into account uncertainties such as material imperfections, load variations, and dynamic forces that may occur during handling. Panels, columns, barriers, and plinths are often subjected to significant stresses when lifted, making a safety factor of 2.25 appropriate to ensure safety during installation and use.

Other types of concrete components, although they play important roles, do not share the same level of critical structural load considerations or lifting complexities that warrant such a safety factor. Therefore, the emphasis on safely lifting and supporting panels, columns, barriers, and plinths validates the need for this particular safety factor in their rigging and handling procedures.