The current version of the Japanese Seismic Loading Definition has been enhanced to allow the user to specify a value of ‘α (alpha)’ which is the ratio of frame height to the overall building height which previously been set to 0.8 and not possible for the user to change.

The Japanese seismic provisions can be added using the Seismic Definitions dialog from the Definitions option in the main Load dialog box and selecting Japanese (AIJ) from the Type pull-down list.

Once all the required values for the parameters have been defined, then clicking on the Add button will add the data to the model such that it is ready to be used in seismic load cases.

For full details of the Japanese seismic load command structure see Section 5.31.2.4 of the Technical Reference manual .