This part of ISO 9652 defines terms used in the structural design of unreinforced masonry. This part of ISO 9652 is applicable to masonry in general, except for the following aspects of masonry design: a) seismic design; b) resistance to fire (see ISO/IEC Guide 52); c) thermal insulation (see ISO 7345); d) sound insulation. NOTE It is assumed that the design of masonry is entrusted to structural or civil engineers or other appropriately qualified persons for whose guidance this International Standard was prepared.