roof diaphragm & shear wall connections
roof diaphragm & shear wall connections
(OP)
I am designing a 50x262 icf building with cold formed/metal deck roof. Because the high aspect ratio of 5.24:1, we want to use some of the interior metal stud walls as shear walls.
Two questions are: Is this aspect ratio indeed too high to span the entire length without the interior shearwalls?
Does the interior shear wall have to reach the metal deck roof for proper transfer or can we just connect the shear wall to the chords?
I also believe that the roof can be designed as a series of simple spans.
I attached a plan for reference. Thanks!
Two questions are: Is this aspect ratio indeed too high to span the entire length without the interior shearwalls?
Does the interior shear wall have to reach the metal deck roof for proper transfer or can we just connect the shear wall to the chords?
I also believe that the roof can be designed as a series of simple spans.
I attached a plan for reference. Thanks!






RE: roof diaphragm & shear wall connections
You will also have to make sure that you are not making the shear wall into a bearing wall, allowing vertical deflection to occur over the wall. Otherwise you are creating a hard point in the roof with respect to the parallel trusses, and you will work the diaphragm causing a leak, or two, or three... eventually.
Mike McCann
MMC Engineering
RE: roof diaphragm & shear wall connections
I also wouldn't attach a shearwall to the bottom of a joist.
RE: roof diaphragm & shear wall connections
RE: roof diaphragm & shear wall connections