Large-scale nonseismically detailed, squat reinforced concrete
shear walls with aspect ratios of 1.0 and 1.5, as practiced in low to
moderate probability of seismic occurrence regions, are tested
under reversed cyclic loading. The seismic behavior and displacement
ductility of the shear walls are investigated. Emphasis of the study
is placed on the inherent displacement ductility of the walls with
nonseismic standard and improved reinforcement details. Experimental results show that the inherent displacement ductility factor
of 2.5 to 3 is commonly achieved with the current nonseismic
design practice and that of 4.5 to 5 with minor modifications in the
reinforcement detailing techniques. It has been shown that an
ordinary squat shear wall with nonseismic design and detailing
may not possess sufficient ductility to respond adequately to an
unexpected moderate earthquake. The proposed reinforcement details,
which include minor modifications to the detailing techniques of
currently practiced nonseismic designs, can effectively lead to a
reasonable improvement of ductile response behavior of the squat
shear walls

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