herring-bone strutting

cross bridging, diagonal bridging, herring-bone strutting

cross bridging
Diagonal bracing (in pairs) between adjacent floor joists to prevent the joists from twisting.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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The plywood ceiling, with its herring-bone strutting, reminiscent of early industrial sheds and festooned with acoustic panels and modern lighting, spans the space above frameless glass walls and modern equipment.