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From version < 40.9 >
edited by IwonaBudny
on 2018/09/10 13:12
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on 2018/09/10 13:20
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651 651  In the static calculations, load cases which contain seismic forces behave like the other normal static forces. Consequently they can be inserted in load combinations and load groups. If they are inserted in the load combinations then they can take part in the imperfection and stability analysis. Of course there is no possibility to convert the masses from these load cases. As it can be seen in the table above, this effect can be taken into account by positive or negative sign as well, because the seismic effect means vibration between +/- extreme values, but the results are shown only in positive direction for the sake of simplicity.
652 652  
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654 -As it is shown above all the seismic possible cases can be found in the list but only those cases are valid which were calculated in seismic calculation. The calculated static loads from seismic effect can be found among the seismic results in the Equivalent loads.
654 +As it is shown above all the seismic possible cases can be found in the list but only those cases are valid which were calculated in seismic calculation. The calculated static loads from seismic effect can be found among the seismic results in the **Equivalent loads**.
655 655  )))
656 656  
657 -== Final results of seismic effect (Seismic max.) in load combination ==
657 +== Final results of seismic effect in load combination ==
658 658  
659 659  Final results of seismic effect (Seismic max.) always obtained from the total summation of all components. These results which actually means extreme +/- values, can be added to a load combination as a special load case with arbitrary factor and it can be applied in all codes.
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662 662  
663 663  (((
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665 -The combination of the Seismic max. and the other static loads results is calculated in a special way. Because the results of the seismic effect are always positive and individual components (e.g. N, My and Mz internal forces in bar) are not simultaneous FEM-Design takes action as follow:
665 +The combination of the Seismic max. and the other static loads results is calculated in a special way.
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668 668  (((
669 -All components of the seismic results are added to the components of static results with the sign of static component.
669 +Because the results of the seismic effect are always positive and individual components (e.g. N, My and Mz internal forces in bar) are not simultaneous FEM-Design takes action as follow: all components of the seismic results are added to the components of static results with the sign of static component.
670 670  )))
671 671  )))
672 672  
673 -== Final results of seismic effect (Seismic max.) in load groups ==
673 +== Final results of seismic effect in load groups ==
674 674  
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676 676  Final results of seismic effect (Seismic max.) can be applied in load groups in all codes. Using EC8 and NS3491-12 program give possibility to have Seismic load type beside Permanent, Temporary and Accidental load type. In all other codes it is recommended to apply the Seismic load type in the Accidental load type.
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