Civil Engineering Reference
In-Depth Information
Torsional irregularity
Diaphragm
discontinuity
Opening
Re-entrant
corner
Plan irregularities
Out-of-plane Vertical Element Offsets
Nonparallel Systems
Figure 11-1 Structures with Horizontal Irregularities
Shearwall or braced frame
Heavy
mass
Soft story
Soft story
Vertical Stiffness Irregularity—Soft Story
Weight (Mass) Irregularity
Weak story
Vertical Geometric Irregularity
Vertical Strength Irregularity—Weak Story
Figure 11-2 Structures with Vertical Irregularities
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