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From version < 10.1 >
edited by IwonaBudny
on 2018/09/06 14:45
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edited by IwonaBudny
on 2018/09/06 14:45
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146 146  
147 147  [[image:1536237376815-771.png||height="247" width="315"]]
148 148  
149 -Data of horizontal design spectra:
150 150  
150 +a. Data of horizontal design spectra:
151 151  
152 +* Type type of spectra, which there are two in the code,
153 +* Ground ground type, which can be A, B, C, D and E,
152 152  
155 +(% style="text-align: justify;" %)
156 +The above two data specify the values of S, TB, TC and TD, which can be found in EC8, table 3.2 and 3.3.
153 153  
158 +* ag is the design ground acceleration on type A ground (ag = γI ag R),
159 +* S is the soil factor,
160 +* q is the behavior factor, which depends on material and type of the structure,
161 +* beta (β) is the lower bound factor for the horizontal design spectrum.
162 +
163 +(% style="text-align: justify;" %)
164 +The Sd(T) horizontal design spectrum is based on EC8 3.2.2.5 as follow:
165 +
166 +[[image:1536237735225-141.png||height="224" width="400"]]
167 +
168 +(% style="text-align: justify;" %)
169 +b. The built-in vertical design spectrum is derived from the horizontal spectrum using the aυg / ag multiplicator which can be found in EC8 table 3.4 and described in 3.2.2.5(5)-(7).
170 +
171 +(% style="text-align: justify;" %)
172 +[[image:1536237786462-739.png||height="179" width="297"]]
173 +
174 +
175 +c. Other input parameters (Others tab)
176 +
177 +[[image:1536237903146-157.png||height="81" width="170"]]
178 +
179 +(% style="text-align: justify;" %)
180 +In the Others tab, the user should set some parameters that effect the calculation and results.
181 +
182 +* Ksi(ξ) is the viscous damping ratio, expressed as a percentage, gene- rally 5%. This data is used in modal analysis when the sum- mation of the effect of the same direction vibration shapes is carried out by the CQC (Complete Quadratic Combination), see later.
183 +* qd is the displacement behavior factor, assumed equal to q unless otherwise specified.
184 +* Foundation level when Static-linear shape is used, the program assumes that the foundation level is defined on that height. It means the pro- gram calculates the mass height from that level. In the other two calculation methods (Static-mode shape and Modal analysis) base shear force is drawn in that level and it is taken into consideration in the so called reduced mass calculation (details in Effective mass setting).
185 +
154 154  ----
155 155  
156 156  = 3. Calculations parameters and calculations steps =
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