Diaphragm Bracing
Some Ceco panels, properly fastened to supporting secondary framing,
form structural units capable of resisting loads through in-plane shear
resistance. This shear resistance effects a shear transfer of these
loads to the foundation with a minimum amount of deflection. Such
resistance is referred to as “diaphragm action.”
The minimum effective length of sheeting required to proved diaphragm
bracing depends upon the loads involved and the diaphragm capacity of the
panel. The effective length of either roof or wall sheeting will
be exclusive of any openings for accessories of any sort. The following
chart indicates which Ceco panels are capable of providing diaphragm bracing
for a building.
When panels used on a building have diaphragm capacity, this strength
is utilized to brace the building, thereby reducing requirements (i.e.
number of braced bays and size of rods) for supplemental “X” bracing.
When “diaphragm action” is used to brace a building, the wall base condition
must be either Base Angle/Trim or Base Angle; a Base Girt cannot be used.