``ALB012`` Alignment vertical segment radius of curvature - v2
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.. parsed-literal::

   001 | \@implementer-agreement
   002 | \@ALB
   003 | \@version2
   004 | 
   005 | Feature: ALB012 - Alignment vertical segment radius of curvature
   006 |   The rule verifies the 'RadiusOfCurvature' design parameter for vertical alignment segments.
   007 |   Where specified, an absolute tolerance value in the length unit of the model is used for the comparison.
   008 | 
   009 |   Background:
   010 |     :doc:`Given A model with Schema 'IFC4.3' </steps/givensattributespy_Afile_or_modelwithfieldvalues>`
   011 |     :doc:`Given An .IfcAlignmentVertical. </steps/stepsentity_selectionpy_Anentity_opt_stmt>`
   012 |     :doc:`Given A relationship .IfcRelNests. from .IfcAlignmentVertical. to .IfcAlignmentSegment. and following that </steps/givensrelationshipspy_Arelationshiprelationshipdir1from_toentitydir2from_toother_entitytailmaybe_and_following_that>`
   013 |     :doc:`Given Its attribute .DesignParameters. </steps/stepsattribute_selectionpy_Itsattributeattribute>`
   014 |     :doc:`Given [Its entity type] ^is^ 'IfcAlignmentVerticalSegment' </steps/stepsattribute_valuepy_attributecomparison_operatorequal_or_not_equalvalue>`
   015 | 
   016 |   Scenario: Validating the absence of curvature radius for specific predefined types of vertical segment
   017 |     :doc:`Given .PredefinedType. ^!=^ 'CIRCULARARC' or 'PARABOLICARC' </steps/stepsattribute_valuepy_attributecomparison_operatorequal_or_not_equalvalue>`
   018 |     :doc:`Then The value of attribute .RadiusOfCurvature. must be ^empty^ </steps/thensattributespy_Thevalueofattributeattributemustbevalue_or_comparison_op>`
   019 | 
   020 |   Scenario: Validating the radius of curvature for parabolic segments
   021 |     :doc:`Given .PredefinedType. ^=^ 'PARABOLICARC' </steps/stepsattribute_valuepy_attributecomparison_operatorequal_or_not_equalvalue>`
   022 |     :doc:`Then The value of attribute .RadiusOfCurvature. must be ^equal to^ the expression: [HorizontalLength / ( EndGradient - StartGradient )] [within a tolerance of] 1E-3 </steps/thensattributespy_Thevalueofattributeattributemustbevalue_or_comparison_optheexpressionexpressionwithinatoleranceofcomparison_toleranceg>`

.. rubric:: Version history

.. list-table::
   :header-rows: 1

   * - Version
     - Tag
     - Date
     - Commit
     - Rule link
   * - v1
     - :tag:`v0.6.8`
     - 2024-10-02
     - :commit:`99696021c6f9ef0b5e1c4daf6f2d1d857c5b7768`
     - `view <https://github.com/buildingSMART/ifc-gherkin-rules/blob/release/0.6.8/features/ALB012_Alignment-vertical-segment-radius-of-curvature.feature>`_
   * - v2
     - :tag:`v0.7.6`
     - 2025-04-29
     - :commit:`b7d7109ae59fac7fe17f0930c5d8d7a93f735938`
     - `view <https://github.com/buildingSMART/ifc-gherkin-rules/blob/release/0.7.6/features/rules/ALB/ALB012_Alignment-vertical-segment-radius-of-curvature.feature>`_