STAAD.Pro Physical Modeler Help

IS: 1893 Seismic Parameters dialog

This dialog is used to populate the parameter fields with appropriate values for the IS 1893 - 2002/2005/2016 codes.

Opens when the Generate button in the Add: Seismic Load Definition dialog.

SettingDescription
Zone Factor
SettingDescription
Choice Select how the zone factor is to be specified:
  • City
  • Zone
City Select the name of the Indian city from the drop-down list.
Zone Select the code-defined seismic zone from the drop-down list.
Z Displays the zone factor, Z, corresponding to the city or zone selection.
Response Reduction Factor
SettingDescription
Response Reduction Factor Select the type of lateral load resisting system, as defined by the IS 1893 code, used in the structure for the direction of loading.
Value Displays the response reduction factor corresponding to the selection.
Importance Factor Group
SettingDescription
Importance Factor Select the importance classification, as defined by the IS 1893 code.
Value Displays the importance factor corresponding to the selection.
Other Parameters Group
SettingDescription
Rock/Soil Type Select the soil classification for the structure site.
Structure Type Select the material used for the structure.
Damping Ratio(%) Type a damping ratio, in percent.
Period in X To specify the period in the global Z direction, check this option and type the period in seconds in the Value field.
Foundation Depth To specify the foundation depth, check this option and type the depth with units in the Value field.
Period in Z To specify the period in the global Z direction, check this option and type the period in seconds in the Value field.