The overall modelling, analysis and conventional design process using the ELF method is summarised as follows:
- Modelling
- No additional seismic modelling requirements
- There is no need to assign members to a SFRS
- Loading and Analysis
Run the Seismic Wizard to:
- Determine building height to the highest level and adjust it if required
- Set the site class (ASCE7), or ground type (Eurocode)
- Select ELF method of analysis (note some vertical or horizontal irregularities can prevent the use of this method
- Set up the relevant seismic combinations
- Static Design
Run the Design (Static):
- the results of the ELF seismic combinations are fed into the design and considered in the same way as other combinations.
- Calculation Output
- A Seismic Design Report is available
- Drift limitations are checked