Transversal Axis

Transversal axes are used for defining girders in transverse direction related to the main axis, such as oblong pier heads, pile heads etc.

Transversal axes are generated in relation to a longitudinal axis. The definition is done interactively in 3D.

To interactively create a new transversal axis:

1. Click with the right mouse button on the entry of the axis, which should be used as reference for the transversal axis and select the menu point New Transversal Axis in the shown context menu.

   A new transversal axis is generated in the navigation tree in the menu Axis.

2. Optionally, edit the name and confirm with the enter key.

   Simultaneously submenu points for the plan and the profile of the transversal axis are automatically generated.

3. Move the mouse in the view window for defining the desired position of the transverse axis by specification of the station on the axis. Confirm with a mouse click.
4. Define the transversal axis in the opening input window by entering the following parameters:

Station

Adapt the selected station if necessary.

Length

Length of the transversal axis (symmetrical to both sides from the intersection with the reference axis).

Relative plan angle

Angle between the transversal axis and the normal to the reference axis in plan (i.e. angle = 0.0 means that the transversal axis is orthogonal to the reference axis)

Inclination angle (profile)

Inclination angle of the transversal axis (profile) relative to the horizontal

Vertical offset (constant)

Vertical offset of the axis related to the (original) intersection point between transversal axis and reference axis (e.g. for considering the cross section depth of the superstructure)

Note: The offset value is defined in relation to the global Y direction and therefore has to be set as negative in downward direction.

Vertical offset (formula)

Assign a formula for the automatic calculation of the vertical offset (see above)

Note: If a formula is used, the constant value of the vertical offset (see above) is automatically calculated and output and a possibly defined value is overwritten.

Example:

Form_HC

where Form_HC = -Tab_H($sf) (definition in Variation/Formula)

with Tab_H … table for the variable cross-section depth of the girder along the reference axis (definition in Variation/Tables)

and $sf … station of the superordinate reference axis

Thus, by using the formula Form_HC, the value of the vertical offset can automatically be adapted to the variable depth of the girder cross-section along the reference axis (table Tab_H) at the selected station of the connection of the transversal axis. Hereby, the reference variable for the stationing is the “father station” ($sf and $sfl resp.) of the superordinate reference axis (i.e. not the stationing on the transversal axis itself). For details see Definition of formulas.