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wood diaphram shape
we have a fairly long narrow diaphram. the shear loads are going to be a problem at the ends of the diaphram. has anyone ever designed a diaphram so that the ends are "flared" so that the shear per foot is less than if the diaphram was a rectangle.
i suppose that you could angle the edges of the roof framing by the opening at the exterior walls to increase the length, but that would really screw up the framing layout.
are you sure there are no other interior shearwall locations you could drag the forces to, breaking up the size of the diaphragm into smaller pieces?
mike mccann
mccann engineering
timmyh76,
can you explain the situation a bit more so that we can give you a more informed answer.
hi,
are the long sides free edges ? what about the opening ?
in general, flared edges have in this case an very little
effect because the main trajectories of the moments are not changed, they dont spread !

2009-09-16, 10:47 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	wood diaphram shape wood diaphram shape we have a fairly long narrow diaphram. the shear loads are going to be a problem at the ends of the diaphram. has anyone ever designed a diaphram so that the ends are "flared" so that the shear per foot is less than if the diaphram was a rectangle. i suppose that you could angle the edges of the roof framing by the opening at the exterior walls to increase the length, but that would really screw up the framing layout. are you sure there are no other interior shearwall locations you could drag the forces to, breaking up the size of the diaphragm into smaller pieces? mike mccann mccann engineering timmyh76, can you explain the situation a bit more so that we can give you a more informed answer. hi, are the long sides free edges ? what about the opening ? in general, flared edges have in this case an very little effect because the main trajectories of the moments are not changed, they dont spread ! __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]