Encyclopedia
Dyuker
Duct: a water conduit with a channel below the bed level of the watercourse, operating under pressure
Source: "ODM 218.2.012-2011. Sectoral Road Methodological Document. Classification of Structural Elements of Artificial Road Structures"
(adopted and put into effect by a directive of Rosavtodor dated 13.09.2011 No. 731-r)