Seismic analysis and conventional design

Tekla Structural Designer
2020
Tekla Structural Designer

Seismic analysis and conventional design

ELF seismic analysis and conventional design

The overall modelling, analysis and conventional design process using the ELF method is summarised as follows:

  1. Modelling
    • No additional seismic modelling requirements
    • There is no need to assign members to a SFRS
  2. Loading and Analysis
    Run the Seismic Wizard to:
    1. Determine building height to the highest level and adjust it if required
    2. Set the site class (ASCE7), or ground type (Eurocode)
    3. Select ELF method of analysis (note some vertical or horizontal irregularities can prevent the use of this method
    4. Set up the relevant seismic combinations
  3. 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.
  4. Calculation Output
    • A Seismic Design Report is available
    • Drift limitations are checked

RSA seismic analysis and conventional design

The overall modelling, analysis and conventional design process using the RSA method is summarised as follows:

  1. Modelling
    • No additional seismic modelling requirements
    • There is no need to assign members to a SFRS
  2. Loading and Analysis
    Run the Seismic Wizard to:
    1. Determine building height to the highest level and adjust it if required.
    2. Set the site class (ASCE7), or ground type (Eurocode)
    3. Select RSA method of analysis
    4. Set up the relevant seismic combinations
  3. Static Design
    Run the Design (Static):
    • Results of the static combinations are fed into conventional design.
  4. RSA Seismic Design
    Run the Design (RSA):
    • Results of the RSA seismic combinations are fed into conventional design and considered in the same way as the static combinations.
    • No additional seismic design is required
  5. Calculation Output
    • A Seismic Design Report is available
    • Drift limitations are checked
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