elliptical stair

elliptical stair

Winding stair in which the plan of its inside edges is in the shape of an ellipse. See also: Stair
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

elliptical stair

A stair which winds about a solid elliptic newel or elliptically shaped well, 1.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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An eye-catching elliptical stair, a device also used at the Ministry of Social Welfare, winds vertiginously to the floors above.