Machinery, appliances, structures and other parts of the main structure necessary to allow it to operate as intended, but not considered part of the main structure.
APPURTENANCE (UH-PURR-TEN-NANS)
Meaning of APPURTENANCE (UH-PURR-TEN-NANS) in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012