tail bay
tail bay
1. In a framed floor, the space between a wall and the nearest girder of the floor.
2. In a framed floor or roof, a bay, 1 which is next to the end wall; one end of its joists rests on the end wall, the other on a girder.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.