To support fabrication of composite
aircraft wings, Bombardier Aerospace,
Belfast is using overhead cranes from
Street Crane Company. There are
three cranes of 5t safe working load.

Two are of 20m span between the
crane rails and one of 25m span.

Crane rails are an integral part of
the roof structure, rather than being
attached to building columns or
supported on gantries. Each of the
cranes has cantilevered extensions to
the crane beam to give extended
reach. This necessitated that crane
construction be underslung from the
tracks, and hoists in turn underslung
from the crane bridge. The result is a
compact crane that operates in a
confined height envelope with the
ability to traverse the load beyond
the track line.