arch beam

arch beam

[′ärch ‚bēm]
(civil engineering)
A curved beam, used in construction, with a longitudinal section bounded by two arcs having different radii and centers of curvature so that the beam cross section is larger at either end than at the center.

arched beam

A beam whose upper surface is slightly curved.
References in periodicals archive ?
One of the features of the room is an inglenook fireplace with a Tudor arch beam above it that is believed to have come from Evesham Abbey.
Demolition works:The defective concrete arch beams are to be removed and the column / beam arrangement is to be demolished to approximately 1000mm below the parapet beam.
Large foam blocks of different shapes including arch beams and windows allow them to use their knowledge about balance and proportion to construct a building.