Diaphragm fasterners
Diaphragm fasterners
(OP)
considering a flexible metal roof diaphragm in a two span condition, simply supported, how are the fasteners designed over the interior support?
are they designed for 1/2wL for the joist spans on either side, and doubled up on the supporting line?
are they designed for 1/2wL for the joist spans on either side, and doubled up on the supporting line?






RE: Diaphragm fasterners
Gravity loads are resisted by the bearing of the deck on the supporting member - that load doesn't usually go through or depend on the fasteners.
RE: Diaphragm fasterners
consider a long building with three braced frames, one at each end and one in the middle.
now with 300plf of lateral wind shear on one side of the interior braced frame and 300 plf of lateral wind shear on the other side, is the fastener spacing designed for 600plf over the interior braced frame?
RE: Diaphragm fasterners
If so; then yes and you would have to provide a total number of fasteners to transfer the total shear to the interior wall (you are referring to this as "doubling up" the fasteners to take the shear at each side of the wall).
It is confusing because you refer to the "diaphragm" and also to "joist spans", not sure if you are asking about lateral or gravity.
RE: Diaphragm fasterners
RE: Diaphragm fasterners
silly question, i know, but i ask because i dont think ive ever seen anyone call out for 2x fastener spacing over an interior braced frame, but it came up recently.
RE: Diaphragm fasterners
haynewp - agree with you as well. Good answer.
RE: Diaphragm fasterners
RE: Diaphragm fasterners
RE: Diaphragm fasterners
RE: Diaphragm fasterners
DaveAtkins