bascule leaf

bascule leaf

[′ba‚skül ‚lēf]
(civil engineering)
The span of a bascule bridge.
References in periodicals archive ?
The current alternative consists of an all timber superstructure (including the wearing surface, structural deck, beams, sidewalks, and railings) with the exception of the bascule leaf which will consist of a steel frame.
These were removed during the restoration and operational balance maintained by adjusting the level of 20 ft x 4 ft x 2 ft water tanks mounted temporarily to the nose of the bascule leafs.