(1) A passageway within the body of a dam or abutment; hence the terms "grouting gallery," "inspection gallery," and "drainage gallery." (2) A long and rather narrow hall; hence the following terms for a power plant: "valve gallery," "transformer gallery," and "busbar gallery."
GALLERY
Meaning of GALLERY in English
Environmental engineering English vocabulary. Английский словарь экологического инжиниринга. 2012