| Includes | steam and condensate piping, valves, piping specialties and other components serving a single facility or multiple facilities. |
| Alternate Terms/Abbreviations | utilidor: utility tunnel: utility corridor. |
| See | 13 47 13 for cathodic protection. 23 22 00 for steam and condensate piping and pumps within a building or structure. 40 11 00 for steam process piping. |