Girder Camber Diagram [PIG]

For this object to be utilized, the model must have completed the analysis and successfully passed the design process, as this object will use the data obtained from the analysis and extract the results of the design.

This report cannot be accessed through the DOCS button in the left sidebar, as it is not like other reports and requires the successful completion of analysis and design before it can be generated. To access the Girder Camber Diagram: image-20250704-075612.png image-20250704-075441.png

General

Girder: Choose a girder for the camber diagram.

Use CL of Bearings/Piers/Use the Station where the Girder intersects the Pier: Specify whether to use the centerline (CL) of the bearings or the support line of the piers as the reference for positioning in the camber diagram. This matters only when the bearings are longitudinally offset from the support line.

  • Bearings : This option uses the actual Centerline of Bearings (CL Bearings) as the longitudinal starting station for the report. If the bearings have a longitudinal offset from the main Pier Station (e.g., Pier Station is 100ft but the bearings are offset to 102ft, the camber table and diagram will begin at the 102ft station and display the data between the bearings. This provides the most accurate positional information relative to the physical support points where the girder rests.

  • Piers : This option forces the report to use the Pier Station (CL Pier) as the longitudinal starting station, overriding any longitudinal offset of the physical bearings. Using the example above, even though the bearings are at 102ft, the camber table will begin its zero reference at the 102ft Pier Station. This option is included because, in some design reports or construction drawings, the client or standard practice prefers the report's reference points to align cleanly with the main Pier Stationing, even if the bearings are longitudinally offset.

  • Use the Station where the Girder intersects the Pier : This advanced option is specifically designed for situations involving skewed piers where longitudinal bearing offsets may also be present. It sets the report's reference point to the calculated intersection of the girder centerline with the pier centerline. When a pier is skewed, the intersection point of the girder's longitudinal axis and the pier's transverse axis may not align with either the Pier Station or the CL Bearings. Selecting this option forces the diagram to use this unique intersection station as the starting reference. This provides the most accurate geometric reference for the girder element itself when dealing with complex or skewed geometry, satisfying specific reporting needs where the "as-built" intersection point is required.

Support-Normalized Displacement[Enabled/Disabled] : Reports zero displacement at support points and automatically adjusts intermediate station displacements using linear interpolation to reflect this zero-displacement boundary condition. When Disabled, the displacements resulting from the analysis are reported for the relevant stations (including supports) and load cases.

PDF Name (Export): This parameter allows the name of the code check document to be modified when saving it as a PDF. When renaming the file, special attention must be given to the text characters on the linked page, as certain characters may interfere with parametric equations and lead to unexpected results.

Deflection Result Cases

All of the following cases—Deck Dead Load, Girder Dead Load, and Superimposed Dead Load—must be defined with a previously defined result case for this object to function properly. If any of these are not defined, an issue will occur.

image-20241127-121648.png

Girder Dead Load: Specify the result case for which the girders and cross frames are included, and the deflection of the girders will be calculated accordingly.

Deck Dead Load: To calculate the deflection of the girders based on the deck’s dead load, specify the relevant result case.

Superimposed Dead Load: Specify the result case for the superimposed dead loads, which are defined for the calculation of the deflection of the girders. The superimposed dead loads may include railings, signage, utilities, traffic barriers, and sidewalks as part of the result extraction case.

Segment Distribution[Uniform/Nonuniform]: Segment distribution is determined by this parameter.

Number of Segments per Span: If you enter 10, every span will be divided into 10 segments, and the deflection values will be extracted.

Segment List: The segment list is determined by this parameter. In order to specify it, the Segment Distribution parameter must be set to "Nonuniform."

Vertical Profile Correction: Enable this option to include the vertical profile column in the camber diagram table. When set to 'Yes', the vertical distance between the girder and the vertical profile (based on a straight line between supports) will be displayed and considered in camber calculations. When set to 'No', this column is hidden and excluded from calculations.

image-20251027-064806.png

Additional Stations: This parameter can be used to specify the station(s) that define the location along the longitudinal direction.

Ignored Insertion Points for Span Positioning: Usually, no selection is needed in this section as the span definitions are automatically determined by the object using the connected insertion points, which represent the bearing locations. However, if some of the connected insertion points are not bearings and instead represent temporary supports, they should be selected and marked as ignored.

Additional Result Cases

For the cases under the Deflection Result Cases tab, the results will be presented. For additional cases, this tab can be used.

The results will be displayed with the column header defined by the "Description" parameter, and they will appear in the results table.

Result Case 1 Description:

Result Case 1:

Result Case 2 Description:

Result Case 2:

Result Case 3 Description:

Result Case 3:

Result Case 4 Description:

Result Case 4:

Result Case 5 Description:

Result Case 5:

Details

Camber Diagram Factor: In the graphical representation, this factor is used to scale the camber value to improve readability.

Show Splice Locations on the Graphic: Indicates the splice locations in the graphical representation.

Number of Decimal Points: Specifies the number of decimal points to be used for numerical values in the result table of the camber diagram.

Display Arrow on the Graphic: Controls whether arrows and camber values are shown on the graphic. If 'Yes', each camber point is labeled with its value from the table.

The report includes two components: a result table and a camber diagram. The table contains the station, length along girder line, vertical profile correction, and the displacements for the specified cases. Displacement values are adjusted using linear interpolation between bearing locations. This method ensures the displacement is zero at all support points, providing a clear diagram for field construction. The diagram, on the other hand, shows a graphical representation of the total camber value. image-20251027-072646.png image-20251027-065756.png

Last updated