# Vertical Response Spectrum

Using the coefficients obtained from the map, the spectrum curve is automatically made with equations specified in

*codes*by the program.

The design vertical response spectral acceleration determined automatically

**International Design Codes**

* ASCE 7-16 : *11.9.2 Vertical Elastic Design Spectrum

* TSC 2018 : *Vertical Design Response Spectrum

**Notation in ASCE**

* S_{MS} =* The MCE

_{R}spectral response acceleration parameter at short periods

*= The vertical response spectral acceleration*

**S**_{aMv}*The design vertical response spectral acceleration*

**S**_{av}=*The vertical period of vibration. [s]*

**T**_{v}=*is defined in terms of S*

**C**_{v}=_{S}in Table 11.9-1

Where a vertical response spectrum is required by codes, vertical response spectral acceleration is developed bu using spectral response acceleration parameters. Vertical Design Response Spectrum is used to consider vertical earthquake effects on the elements. In some cases, vertical earthquake effects can be considered with a constant coefficient, while in other cases the vertical response spectrum can be used. The conditions where the use of vertical response spectrum is required are given in *Codes*.

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