Page 445 - Design of Reinforced Masonry Structures
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SHEAR WALLS 7.7
FIGURE 7.9 (a) Coupled and (b) noncoupled shear walls [7.4].
one shear wall to the other, the walls are referred to as noncoupled and can be analyzed
as cantilevers fixed at the base.
Openings in shear walls can be provided in a regular and rational pattern to develop
extremely efficient structural systems, particularly suited for ductile response with
very good energy-dissipation characteristics [7.6]. However, the presence of openings
reduces the rigidity of shear walls. Influence of openings on coupled shear walls is
shown in Fig. 7.10.
Solid wall Single punched Double punched Single opening Double opening
R–100% opening opening strip strip
R–84% R–81% R–35% R–20%
Decreasing rigidity
FIGURE 7.10 Influence of openings on the rigidity of shear walls [7.2].
