Versione 2014.h

Code implementation and improvements in its application. ABNT NBR 15421:2006 (Brasil)

Projeto de estruturas resistentes a sismos - Procedimento.

This code was already implemented as of previous versions for CYPECAD and Metal 3D for the dynamic analysis method (modal spectral).
The 2014.h version includes in CYPECAD:

• A static analysis method (equivalent lateral force)
  The analysis method selection (dynamic or static) is carried out using the Analysis method option within the dialogue box where the seismic load is defined.
  
• Correction due to base shear
  This correction is applied to the seismic analysis using the dynamic analysis (spectral modal) method. To calculate the base shear with the ABNT NBR 15421:2006 code, CYPECAD offers two options for users to indicate the Fundamental period of the structure in two ways:
  
  • Based on the code
  • Specified by the user
    

More information on the correction due to base shear carried out by CYPECAD.

More information on how the fundamental period of the structure is determined.