In addition to protecting the pipe, shield plates must extend at least how many inches above and below the member?

The requirement for shield plates to extend at least 2 inches above and below the member is based on safety and structural integrity considerations in mechanical installations. This extension ensures that any pipe or conduit passing through a structural member is adequately protected from damage, particularly in instances where the member may be subject to physical stress or impact.

The 2-inch extension serves to create a buffer zone, effectively shielding the pipe from potential hazards, such as fasteners, tools, or other equipment that could cause harm during construction or maintenance activities. It is a specified practice to minimize the risk of pinching, abrasion, or accidental contact, thereby prolonging the life of the mechanical system and enhancing overall safety.

It's important to understand that adhering to this guideline is crucial in meeting code requirements, which aim to ensure the reliability and safety of mechanical installations in various environments.