Any medium that refers to or depicts architectural works, structures, parts of structures, or designs, whether built or unbuilt. Included are textual documents such as specifications and letters; graphic documents such as drawings, prints, and photographs; models; and any other visual media that concern any portion of the built or unbuilt environment. Subjects may include not only architectural works, but also related subjects such as furniture, engineering designs, naval architecture, textiles, architectural ornaments, paper architecture, studies, landscape designs, and stage designs. Authority control in the context of the Guide pertains to entities with proper names, i.e., people/corporate bodies, subjects/built works, and geographic locations. One of the major functions of authority control is to govern the form and content of proper names in order to ensure that all references to a given person or subject are collocated.
An authority record may contain not only the preferred name, but all other names for the person or subject. An expanded authority record can also include contextual information, e.g., biographical or corporate histories. A code term involving the permitted practice of holding a fire door in the open position providing the door closes upon detection. Generally the detection must be from the presence of visible or invisible particles of combustion. Fusible links are not usually considered acceptable because of slower response time. Any listed closer can be used in combination with an electromagnetic holder and a photo electric or ionization type smoke detector. Labeled or listed spring hinges could be used as well as hydraulic door closers.
Some special applications of swinging, sliding and rolling fire doors primarily in industrial applications are permitted to be used with fusible links, weights and pulleys. Later product introductions are more sophisticated and provide more flexibility for building operation. These are hydraulic door closers incorporating hold open mechanisms allowing the door to be held open in many degrees of opening positions. The most recent product introduction along these lines is the so-called 'swing free' unit. Instead of using a hold open mechanism, the energy of the closer is negated and the door is allowed to be operated as if it were not equipped with a closer. Upon detection of visible or invisible particles of combustion, the closing mechanism engages and the closer causes the door to return to the closed and latched position. These automatic closing arrangements are fail safe in that upon power failure, the door closes.
Building Construction Words
All are listed by a nationally recognized independent testing laboratory and are under an in-plant follow-up inspection service.