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Lateral stability: irregularities

A building has a first floor envelope consisting of bearing walls without openings, a second floor of column system with openings and third level of bearing walls without openings. In this case, the second floor does not have the same strength as the floor above and thus cannot resist stress to the same degree. Which of the following vertical irregularities describes this condition?
A. Soft story
B. Weak story
C. Geometric irregularity
D. In-plane discontinuity
Answer ARE 4.0 exam prep: SS

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