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The design deformation for an SDOF system can be determined for inelastic design spectrum given the parameters Tn, ρ and µ.

**Application of inelastic design spectrum**

The design deformation for an SDOF system can be determined
for inelastic design spectrum given the parameters *T _{n}*,

where *A _{y}* is the
pseudo-acceleration of the inelastic response spectrum. Consider an SDOF system
with

There are two properties that
must be considered while designing a structure, strength and ductility. One can
design a very strong structure or a very ductile one or economic combination of
both the properties. If the combination of strength and ductility is inadequate
repairing such a structure is uneconomical or the structure will collapse.

**Inelastic deformation**

Assume we want to draw a curve
relating *S _{a}*/

Tags : Civil - Structural dynamics of earthquake engineering

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