Bressummer

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A bressummer, or breastsummer, in timber-building, is a beam in the outward part of the building, and the middle floors, (not in the garrets or ground floors) into which the girders are framed. In the inner parts of a building, such beams are called "summers".

It is part of the timber frame construction in the over-hanging upper story in jettying

This article incorporates content from the 1728 Cyclopaedia, a publication in the public domain.