Bearing Wall System vs Building Frame System (Masonry)
Bearing Wall System vs Building Frame System (Masonry)
(OP)
I am studying for the SE II eaxam and came across a question within the NCEES Sample Questions regarding a masonry shear wall. As I approached the problem I consider it a "Bearing Wall System" in order to determine applicable factors. Then when I reviewed the answer in the book NCEES considered it a "Building Frame System". I have came across other errors in this book, so it could be a mistake, but the question I have: when is a masonry wall considered a frame system and not a load bearing system (outside of the obvious)i.e. is there a min. trib load to meet a specific standard. For reference, I am using the IBC 2006.
Thanks in advance for any input,
Thanks in advance for any input,






RE: Bearing Wall System vs Building Frame System (Masonry)
RE: Bearing Wall System vs Building Frame System (Masonry)
Stu
RE: Bearing Wall System vs Building Frame System (Masonry)
RE: Bearing Wall System vs Building Frame System (Masonry)
This seems to be a gray area with this particular situation as most of the one story structure is supported with columns and wood framing, therefore the building system is a dual system;however, the lateral system is 100% masonry shear walls. Since the table in question is titled "Design Coeff and factors for Seismic-Force Resisting Systems", I am inclined to consider this a bearing wall system. I guess the next step is to contact NCEES and see what they have to say, as they wrote the book I am questioning.
RE: Bearing Wall System vs Building Frame System (Masonry)
WALL SYSTEM, BEARING: A structural system with bearing
walls providing support for all or major portions of the vertical loads. Shear walls or braced frames provide seismic force resistance.
It looks like slightly less than 50% of the dead load on that problem is being supported by the masonry, so I would say that is a major portion of the dead load. But I guess they don't think so, seems a little hokey to me.