Offset of drags to shear walls
Offset of drags to shear walls
(OP)
Hello,
What are some option if you have a building structure with no drags leading into the shear walls. The diaphragm is steel deck w/ no concrete.
Please see sketch to get an idea of what I am talking about.
So there is no direct load path to the shear wall since no drag beam placed. Any options??
What are some option if you have a building structure with no drags leading into the shear walls. The diaphragm is steel deck w/ no concrete.
Please see sketch to get an idea of what I am talking about.
So there is no direct load path to the shear wall since no drag beam placed. Any options??






RE: Offset of drags to shear walls
Mike McCann, PE, SE (WA)
RE: Offset of drags to shear walls
RE: Offset of drags to shear walls
The greatest trick that bond stress ever pulled was convincing the world it didn't exist.
RE: Offset of drags to shear walls
When I am working on a problem, I never think about beauty but when I have finished, if the solution is not beautiful, I know it is wrong.
-R. Buckminster Fuller
RE: Offset of drags to shear walls
RE: Offset of drags to shear walls
Somehow you either need drag struts directly aligned with shear walls or as manstrom said diagonal members with connections to force the offset drags to move together with the shear walls. Do you have shear walls in the other directions?
RE: Offset of drags to shear walls
manstrom...see attached sketch here...so diagonal struts like the ones you see on this attachment in blue?
slickdeals....yes, I do not want to rely only on the exterior walls.
RE: Offset of drags to shear walls
The greatest trick that bond stress ever pulled was convincing the world it didn't exist.
RE: Offset of drags to shear walls
The greatest trick that bond stress ever pulled was convincing the world it didn't exist.
RE: Offset of drags to shear walls
Are you absolutely sure that these interior walls are shear walls? Were they detailed as such with the reinforcing steel?
Mike McCann, PE, SE (WA)
RE: Offset of drags to shear walls
RE: Offset of drags to shear walls
for the effective diaphragm. Where is the load transfer from the shear walls at the center? Wouldn't the force from the center drags create out of plane on the beams attached to it?
RE: Offset of drags to shear walls
I'm not quite sure what you're asking here. Does the sketch below help? Maybe I should have drawing the chords more "continuous" looking.
Yes. Itsy, bitsy weak axis bending moments. Technically, the same is true for the flanges of any continuous steel I-beam.
The greatest trick that bond stress ever pulled was convincing the world it didn't exist.
RE: Offset of drags to shear walls
RE: Offset of drags to shear walls