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1 Lintel, e.g. over a fireplace.

2 Beam, also called breastsummer or bressumer, set on the extremities of cantilevered joists (jetty) and supporting the posts of a wall above in timber-framed construction.

3 Main beam or girder in a floor, or any large beam, called a summer-beam supporting floor-joists.

4 Large stone, the beginning of a vault, or at the extremity of a gable.

5 Stone at the top of a pier or jamb supporting a lintel or arch.

Subjects: Architecture.

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