Rigid Diaphragm Issue
Rigid Diaphragm Issue
(OP)
I have a very poor layout of concrete shearwalls below a podium slab that is giving me no end of trouble. I have a couple of 19' long walls and an 80' long wall. The 80' long wall takes most of the load, which is a problem for various reasons (I don't feel like writing a dissertation on the problem definition).
Without placing openings in the wall, does anyone have idea on how to make the 80' wall less stiff so I can get some load out of it and into the shorter walls? I could place a series of vertical joints in the wall., but this is problematice for waterproofing(above water table).
Without placing openings in the wall, does anyone have idea on how to make the 80' wall less stiff so I can get some load out of it and into the shorter walls? I could place a series of vertical joints in the wall., but this is problematice for waterproofing(above water table).






RE: Rigid Diaphragm Issue
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RE: Rigid Diaphragm Issue
RE: Rigid Diaphragm Issue
RE: Rigid Diaphragm Issue
RE: Rigid Diaphragm Issue
Alternativeely,
0) Increase the concrete strength of the shorter walls to increase stiffness
1) or Calculate the stiffness of the shear wall accounting for reinforcing steel (not just elastic stiffness)
2) or you could design a whole bunch of seperate walls and at the joints provide a few #4 horizontal bars, such that under a significant event a vertical crack develops and seperates the walls.
3) Or provide diaphragm to shear wall reinforcement just enough for a limited force. Once the diaphragm steel yields (ensure gravity capacity is maintained) the diaphragmn redistributes.
If you allow the large wall to slide you may have more issues with ensuring diaphragm strength.
RE: Rigid Diaphragm Issue
RE: Rigid Diaphragm Issue