In concealed locations, at what distance must piping be protected by shield plates when installed through members?

In concealed locations, piping must be protected by shield plates when installed through members at a distance of 1.5 inches (38 mm) from the edge of the member. This requirement is established to prevent damage to the piping from the structural members, which could occur during construction or from settling and shifting over time. The specific distance of 1.5 inches ensures that there is sufficient coverage to protect the pipes from any screws, nails, or other fasteners that may be driven into the members, as well as provides a safeguard against potential physical impacts. This practice helps maintain the integrity and function of the piping, reducing the risk of leaks and other failures associated with damage.