curb roll
(redirected from controlled variable)
curb joint, Brit. curb roll, knuckle joint
The horizontal joint that occurs at the intersection of the two slopes of a curb roof.
curb roll
2. A wood roll covered with lead at the intersection of the two sloped surfaces of a curb roof.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.