Some seismic codes specify inertia reduction factors for concrete elements for seismic loads and CYPECAD considers them when these codes are applied.
As of the 2015.h version, users can define inertia reduction factors for concrete elements for seismic loadcases regardless of the code that is used.
To do so, the option “Inertia reduction factors” has been implemented (Job > General options) and only appears when the structure is to be analysed with seismic loading. When this option is selected, a dialogue box opens where users can choose between two options:
- Based on the code
The inertia reduction factors for concrete elements for seismic codes considered in the selected seismic code are applied. A list appears displaying the inertia reduction factors (which cannot be modified) for each concrete element (columns, shear walls, concrete walls, masonry walls, beams, floor slabs). If the selected seismic code does not define these factors, a value of 1 is displayed for all the concrete elements. - Specified by the user
Users can introduce an inertia reduction factor for each concrete element in the list (columns, shear walls, concrete walls, masonry walls, beams, floor slabs) which will be taken into account in the seismic loadcases.
