plumb cut

plumb cut, ridge cut

A cut in a vertical plane, as the cut on a rafter where it butts vertically against a ridgeboard.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
The top plumb cut on valley rafters has a 45-degree bevel on each side.
Then use a Speed square to transfer the "plumb cut" angle to the end of the rafter, 11 in.