#### 7.3.4.17 Pset_PipeSegmentOccurrence

PSET_OCCURRENCEDRIVEN / IfcPipeSegment

| Pipe segment occurrence attributes attached to an instance of IfcPipeSegment.

buildingSMART Data Dictionary

PSD-XML

- InteriorRoughnessCoefficient
  P_SINGLEVALUE / IfcPositiveLengthMeasure

  | InteriorRoughnessCoefficient: The interior roughness coefficient of the pipe segment.
  | 内部粗度係数: 配管部の内部粗度係数

- Color
  P_SINGLEVALUE / IfcLabel

  | Color: The color of the pipe segment. Note: This is typically used only for plastic pipe segments. However, it may be used for any pipe segments with a painted surface which is not otherwise specified as a covering.
  | 色: 配管部の内部粗度係数　記：この語はプラスチック配管にのみ使われる。しかしながら、保護のためではない塗装された表面を持つ配管にも使われる。

- Gradient
  P_SINGLEVALUE / IfcPositiveRatioMeasure

  | Gradient: The gradient of the pipe segment.
  | 勾配: 配管部の勾配

- InvertElevation
  P_SINGLEVALUE / IfcLengthMeasure

  | InvertElevation: The invert elevation relative to the datum established for the project.

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