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The excel file containing the accounts calculations described below can be examined.
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Reduced design acceleration spectra are obtained by using the R and D coefficients determined according to TBDY 2018 Table 4.1 and the (4/5)R and D coefficients at the end of the curtain tilt controlscontrol of shearwall overturning moment.
In TBDY 2018 4.2.1.2 , the horizontal elastic design spectrum is reduced by the earthquake load reduction coefficient Ra(T).
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Using the Building Importance Coefficient Factor, I = 1 for the upper part of the building and R = 4.8, D = 2.5 in the X and Y direction, a reduced horizontal elastic design spectrum for DD-2 in both directions was is obtained.
In the following visuals , the calculation of Ra (T) and the calculation of the reduced design spectrum with the help of excel are included. The equations given above are used in this calculation.
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In the graph above, it is seen that the reduced spectrum calculated manually and the reduced spectrum calculated by ideCAD overlap and the calculation is correct.
Reduced Design Spectrum for the
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Basements of the Building
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In accordance with TBDY 2018 4.8.5.3, the Building Importance Coefficient Factor for the lower part of the building is taken by taking I = 1, R = 2.5 and D = 1.5 and the horizontal elastic design spectrum reduced in both directions for the earthquake level DD-2 is calculateddetermined.
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