hammer-beam roof

Britannica Concise Encyclopedia: hammer-beam roof

English medieval timber roof system used when a long span was needed. Not a true truss, the construction is similar to corbeled masonry (see corbel) in that each set of beams steps upward (and inward) by resting on the ones below by means of curved braces and struts. The roof of Richard II's Westminster Hall in London (1402), with a 70-ft (21-m) span, is an excellent example.

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Architecture: hammer-beam roof

A roof supported by hammer beams.

hammer-beam roof

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		Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved. Read more
		Architecture. McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc. All rights reserved. Read more