Steel Frame with infill CMU Walls
Steel Frame with infill CMU Walls
(OP)
I am designing a three story building with a steel frame (columns and beams) for gravity loads, and want to know if lateral resistance can be provided for drift by CMU infill walls at the three facade walls in all levels except one. Do you consider full bracing is provided to the steel frame by the infill CMU walls and if so, can these walls be unreinforced (minimal reinforcing 48" o.c.h. and ladder type vertical reinforcement)
Wind controls for lateral. Your feedback is appreciated.
Wind controls for lateral. Your feedback is appreciated.






RE: Steel Frame with infill CMU Walls
Plus, after you add the CMU, wind may no longer control - re-check your seismic with the shear walls.
What kind of floor diaphragm structure do you have to transmit the lateral forces to the CMU?
Mike McCann
MMC Engineering
RE: Steel Frame with infill CMU Walls
I also agree with all that mike said above.
RE: Steel Frame with infill CMU Walls
csd72:
Thanks for your input,Please let me know if I am understanding your concept, because I think your are using a more refined term for what for me is in-plane masonry shear (parallelogram type of deformation in the infill cmu wall).
Merging your concepts from msquared and csd72 I am coming to my solution. Verify proper anchorage from beam and vertical reinforcement for cmu wall, and in-plane shear capacity of infill cmu wall. I would provide reinforced fully grouted top, bottom courses next to beams.
Let me know what you guys think.
RareBug
RE: Steel Frame with infill CMU Walls
Mike McCann
MMC Engineering
RE: Steel Frame with infill CMU Walls
RE: Steel Frame with infill CMU Walls