A superelevation assignment for a bridge object is referenced to the layout line. The superelevation is specified in percent and it indicates the rotation of the superstructure about its longitudinal axis. The superelevation may be constant or it may vary along the bridge. In most bridge models including superelevation is probably an unnecessary refinement.
Use the Bridge Object Superelevation Assignment form to specify the superelevation for the selected layout line.
Bridge Object Name display box. This name identifies the bridge object to which the superelevation applies.
Units drop-down list. Use the displayed units or select new units from the drop-down list.
Superelevation Option. Choose a constant superelevation or specify a user-defined elevation.
Constant option. When this option is selected, use the Percent edit box to specify the amount of superelevation to be applied along the length of the bridge.
User Definition option. When this option is selected, the User Defined Superelevation Data area of the form becomes active. Use the Station edit box to specify locations along the length of the bridge where the superelevation is to be defined. The Stations/locations are measured from the left edge of the bridge in the units displayed in the Units drop-down list. Use the Superelevation Percent edit box to specify the amount of superelevation to be applied at a given station. The superelevation varies linearly between the specified stations.
Add button. With the appropriate data entered into the Station and the SuperElevation Percent edit boxes, click the Add button to add the superelevation definition. The new definition will appear in the User Defined SuperElevation Data for Selected Layout Line display area.
Modify button. Highlight a previously defined definition in the User Defined SuperElevation Data for Selected Layout Line display area. Note that the highlight data appears in the Station and SuperElevation Percent edit boxes above the display area. Type the revised data into the edit boxes and click the Modify button to modify the superelevation definition.
Delete button. Highlight a previously defined definition in the User Defined SuperElevation Data for Selected Layout Line display area and click the Delete button to delete the definition.
See Also
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Access the Bridge Object Superelevation Assignment form using either of the following
Alternatively, the following approach can be used if the form is being used when the Bridge Object is being defined or reviewed.
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