Extruded Girder Parameters
Extruded girders extrude their geometry from cross-sections.
| Parameter Description | Content Parameter | Parametric Value | InfraWorks Set/Read | Inventor | Revit |
|---|---|---|---|---|---|
| Left bottom flange slope in percentage | LeftBotFlangeSlopeInPercentage | The slope of the left bottom flange as a percentage. | No/Yes | No | Not applicable |
| Left deck slope in percentage | LeftDeckSlopeInPercentage | The slope of the deck to the left of the alignment as a percentage. | No/Yes | No | Not applicable |
| Match girder bottom slopes to deck slopes | MatchGirderBotSlopesToDeckSlopes | Determines how the bottom of a girder is laterally aligned with a deck slope. Either True or False. | Yes/No | No | Not applicable |
| Match girder top slopes to deck slopes | MatchGirderTopSlopesToDeckSlopes | Determines how the top of a girder is laterally aligned with a deck slope. Either True or False. | Yes/No | No | Not applicable |
| Right bottom flange slope in percentage | RightBotFlangeSlopeInPercentage | The slope of the right bottom flange as a percentage. | No/Yes | No | Not applicable |
| Right deck slope in percentage | RightDeckSlopeInPercentage | The slope of the deck to the right of the alignment as a percentage. | No/Yes | No | Not applicable |
Extruded Girder Placement
Extruded girder origins are defined by both lateral and vertical dimensions.
- Lateral Dimension. Girder placement is achieved with start and end lateral offsets from the alignment. The girder origin aligns with this position.
- Vertical Dimension. Girder origins can be at any elevation (or Y value in the coordinate system of the girder). Girders are vertically matched to the deck above, their bearings, or supports below.
Extruded Girder Lateral Slope
MatchGirderTopSlopesToDeckSlopes also helps determine how a girder is laterally aligned with a deck. In the following image the girder on the left is set to True, while the girder on the right is set to false.
When set to True, The lateral slope portions of the underside of the deck to the left and right of the alignment are considered. Slice dimensions are then set depending on where the lateral offset of the girder is negative, 0, or positive.
| Dimension | Lateral Offset | Set to Deck Underside Slope |
|---|---|---|
| LeftDeckSlopeInPercentage | Negative | Left |
| LeftDeckSlopeInPercentage | 0 | Left |
| LeftDeckSlopeInPercentage | Positive | Right |
| RightDeckSlopeInPercentage | Negative | Left |
| RightDeckSlopeInPercentage | 0 | Right |
| RightDeckSlopeInPercentage | Positive | Right |
If a girder is to the left or right of the alignment, the entire top can be sloped to match the deck left or right slope.
The following image shows a girder with a lateral offset of 0
Similarly, when MatchGirderBotSlopesToDeckSlopes is True, LeftBotFlangeSlopeInPercentage and RightBotFlangeSlopeInPercentage are set in the same manner as the top slopes.