nonstructural element; nonstructural member
Technical term used in building and construction to refer to parts of a structure that do not bear loads, such as partitions, ceilings, or exterior cladding.
Seismic design of nonstructural elements is also important.
In this building, lightweight materials are used for nonstructural members.
構造部材 refers to load-bearing structural members, while 非構造部材 refers to non-load-bearing elements.
Compound of 非 (hi-, 'non-') + 構造 (kōzō, 'structure') + 部材 (buzai, 'component, member'). A straightforward technical term.