single-saddle notch

saddle notch

saddle notches
At a corner in log cabin construction, a rounded notch cut near one end in the lower surface of a horizontal log; forms an interlocking joint when mated with a similarly notched log set at a right angle to it. Occasionally, this term is also used for a double-saddle notch, which is cut in both sides of a round log; in such instances, the logs at right angles are unnotched.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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