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Typically, insertion points are used Insertion Points should be defined to determine the girder layouts and to model bearing locations, therefore. Generally, it is recommended to have one insertion point for each bearing.

Location: Select the support lines

Longitudinal Offset [ft]: Longitudinal offset along the PGL (Projected Grade Line) from the support line.

Transverse Offset [ft]: Transverse Offset from the PGL. When the transverse offset of the support line is non-zero, the entered value will be added to the transverse offset of the support line, resulting in the summation being used as the transverse offset along the PGL for the insertion pointWhen you click on the location cell and then on the appearing three dots, the option ‘Set to … (Support Lines created)’ or ‘Select’ should be visible. For defining the locations of insertion points, a support line which was previously defined should be used.

Longitudinal Offset: The longitudinal offset refers to the offset value along the direction of PGL (Proposed Ground Level).

Transverse Offset: The transverse offset refers to the offset value perpendicular to the PGL.

Station on PGL (read only): displays the station of the insertion point along PGL and with respect to PGL.

When working with a support line that has a skew angle greater than 0 in OpenBrIM, it is important for users to specify the transverse offset(T) along the support line, not along the PGL(Y). This is demonstrated in the figure below.

If a support line has a skew angle greater than 0 and longitudinal offsets greater than 0 are being used, then the longitudinal offset parameter is applied perpendicular to the support line.