Plywood Diaphragm on Steel Framing

[Stenbrook]

Has anyone ever seen or designed a steel monoslope roof structure with wide flange rafters below wide flange purlins and braced using a plywood deck? I am working on a custom home and this is how the owner has detailed it out and I am not sure exactly where to go for the capacity (in lbs/ft) for the diaphragm.. Can anyone help?

 

[EngineeringEric]

NDS diaphragm with the sheathing fastened to wood nailers. but the fasteners should get some attention from you.

ANSI/AWC Special Design Provisions for Wind and Seismic (SDPWS).

http://www.awc.org/codes-standards/publications/nds-2012

That at least where i'd start

 

[bookowski]

Check out the ICC report for hilti x-u low velocity fasteners.

"2.2 Horizontal Diaphragms: The Hilti X-U fasteners may be used as an alternate to 10d common nails for fastening wood structural panel horizontal diaphragms to structural steel members."