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 ?
Energy (-) Duration (kHz) ([micro]s) Straight beam Prepeak 258 2.8 224 Postpeak 154 4.4 616 Arch beam Prepeak 215 6.0 383 Postpeak 148 5.0 560
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.
Construction work consisting in repairing roofing of the entrance to the school building, including reinforcement of arch beams and delivery of new glazing by PC boards.
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.