Flexible roof diaphragm shear wall load distribution question?
Flexible roof diaphragm shear wall load distribution question?
(OP)
Please see attached diagram, we know that for flexible diaphragm, if two shear walls are not in a same line with shear force as in Fig.1, the shear load is distributed to these two shear walls by their tributary area. But what about the two shear walls are in a same line in the shear force direction as shown in Fig. 2?
My oppinion is in Fig. 2 case, the shear load will still distributed to the two shear wall based on their relative rigidity, not based on their tributary area. i.e. shear wall A will take twice as much shear load as shear wall B. Am I right?
Thanks a lot for you guys precious oppinion.
My oppinion is in Fig. 2 case, the shear load will still distributed to the two shear wall based on their relative rigidity, not based on their tributary area. i.e. shear wall A will take twice as much shear load as shear wall B. Am I right?
Thanks a lot for you guys precious oppinion.






RE: Flexible roof diaphragm shear wall load distribution question?
RE: Flexible roof diaphragm shear wall load distribution question?
Don't confuse the load path through the diaphragm with the load path along the collector.
The flexible diaphragm will, theoretically, distribute load through itself in simple-span behavior, regardless of the flexibilities of the supporting end braces.
Once it hits the end braces, the diaphragm is no longer part of the load path...the load is now "in" the collector and the collector releases load based on the relative stiffnesses of all that connects it to the ground.
Thus, the longer shearwall would take more load than the shorter shearwall.
RE: Flexible roof diaphragm shear wall load distribution question?
RE: Flexible roof diaphragm shear wall load distribution question?
Generally it is thought so.
RE: Flexible roof diaphragm shear wall load distribution question?
RE: Flexible roof diaphragm shear wall load distribution question?
RE: Flexible roof diaphragm shear wall load distribution question?
RE: Flexible roof diaphragm shear wall load distribution question?
Mike McCann
MMC Engineering
RE: Flexible roof diaphragm shear wall load distribution question?
with two or more shear walls in-line with eachother, the amount of shear each wall takes is based how much linear load the collector dumps into it.