DYNAM Addition II. is the RSTAB add-on module and also represents an extension to the DYNAM Basic module. It is used to determine horizontal earthquake loads according to Eurocode 8, IBC 2000 or DIN 4149.

Program Features

Eurocode 8

• Site classes A to C
• Site parameter S
• Horizontal ground acceleration Beta-0
• Exponents k-d1 and k-d2
• Constant acceleration T-B and T-C
• Constant displacement T-D
• Behavior coefficient q
• Ratio of ground/earthquake acceleration a-g/g

IBC 2000

• Seismic use group I to III
• Seismic factor I E
• Site class A to E
• Site coefficients F a and F v
• Maximum considered earthquake spectral response acceleration S MS and S M1
• Design spectral response acceleration S DS and S D1
• Seismic design category
• Response modification coefficient R a
• Seismic response coefficient C S
• Equivalent lateral force procedure
• Modal analysis procedure

DIN 4149

• Earthquake zones 1 to 4
• Standard values of the gravity parameters a0
• Kappa factor for site soil influence
• Seismic use groups 1 to 3
• Calculation value of the horizontal acceleration cal a
• Beta coefficient of the standardized response spectrum
• Eigenperiod-dependent Z-factor for design spectrum
• Eigenmode for analysis
• Direction of the earthquake