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    Assessment of ShearWall Quantity in Seismic-Resistant
    Design of Reinforced Concrete BuildingsAbstract It is common to design reinforced concrete build-
    ings with shear walls to resist seismic loads. In the present
    study, an easy to apply analytical method has been proposed
    to determine the amount of shear walls necessary to make
    reinforced concrete buildings seismic-resistant against mod-
    erate to severe earthquakes. The method is based on the fol-
    lowing design strategy: (1) The total design base shear must
    be resisted by shear walls; (2) Equal amounts of shear walls
    must be placed in both orthogonal directions of the struc-
    ture; and (3) The moment resisting frame elements, which
    are beams and columns, must independently be able to resist
    25 % of the total design base shear. For such a system, the
    ratio of the total area of shear walls to the area of the floor
    plan has been obtained by equating the total design base
    shear to the total shear resistance provided by all shear walls
    in one direction. Because seismic action may occur in any
    direction, equal amount of shear walls is recommended to
    provide in the two orthogonal directions. A procedure is also
    presented to check the stiffness (or storey drift) requirement
    for the determined amount of shear walls. The complete ana-
    lytical procedure was demonstrated by implementing it on a
    10 storey 3-D reinforced concrete building.6856
    Keywords Shear wall · Earthquake · Storey drift ·
    Dual system1 Introduction
    To be able to resist a major earthquake, a reinforced concrete
    (RC) building must possess adequate strength, stiffness and
    ductility. These three requirements are generally satisfied by
    properly placing the required amount of shear walls in RC
    buildings. Observations and evaluations of past earthquake
    damages show that buildings with shear walls, despite inade-
    quate amount and poor placement in the building plan, resistthe seismic forces efficiently and generally do not collapse
    under moderate to severe earthquakes. It is due to the reason
    that almost all the seismic codes recommend the employment
    of shear walls in RC buildings. In the recent past, substantial
    research has been carried out on seismic response of RC
    buildings with shear walls.
    Kim et al. [1] proposed an efficient method for a three-
    dimensional analysis of a high-rise building structure with
    shear walls. Three-dimensional super elements for walls and
    floor slabs were developed and a substructure was formed by
    assembling the super elements to reduce the time required
    for the modeling and analysis. Static and dynamic analyses
    of example structures with various types of opening were
    performed to verify the efficiency and accuracy of the pro-
    posed method. They concluded that the proposed method is
    very useful for an efficient and accurate analysis of high-rise
    building structures with significantly reduced computational
    time and memory.
    Aksogan et al. [2] studied the forced vibration analysis of a
    multi-bay coupled shear wall on an elastic foundation. Their
    analysis considers shear walls with a finite number of stiff-
    ening beams, the properties of which vary from span to span
    and/or from section to section in the vertical direction. They
    employed continuous connection method (CCM) to find the
    structure stiffness matrix. The structure mass matrix was
    foundwith the lumpedmass assumption.Atime-history anal-
    ysis was carried out using the Newmark numerical integra-
    tionmethod to obtain the response. The response obtained by
    the present method was then compared with those obtained
    using SAP2000 structural analysis program. They found a
    good match between the results of present method and the
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