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  1. Home
  2. Tekla Structural Designer
  3. TSD.API.Remoting.Sections
  4. IDoubleISection

Tekla Structural Designer API References 2026

Click here to access Tekla Structural Designer API References for version 2025.

API References

  • TSD.API.Remoting
  • TSD.API.Remoting.Bim
  • TSD.API.Remoting.Bim.Enums
  • TSD.API.Remoting.Common
  • TSD.API.Remoting.Common.Interfaces
  • TSD.API.Remoting.Common.Properties
  • TSD.API.Remoting.Connections
  • TSD.API.Remoting.Decking
  • TSD.API.Remoting.Document
  • TSD.API.Remoting.Enums
  • TSD.API.Remoting.Filtering
  • TSD.API.Remoting.FloorAnalysis
  • TSD.API.Remoting.Foundations
  • TSD.API.Remoting.Foundations.Create
  • TSD.API.Remoting.Geometry
  • TSD.API.Remoting.Loading
  • TSD.API.Remoting.Loading.Create
  • TSD.API.Remoting.Materials
  • TSD.API.Remoting.PortalFrames
  • TSD.API.Remoting.PortalFrames.Create
  • TSD.API.Remoting.Reinforcement
  • TSD.API.Remoting.Report
  • TSD.API.Remoting.Sections
    • ColdRolledType
    • ConcreteFabrication
    • ExtendedSectionType
    • IAnalysisElementSection
    • IAsymmetricBeamSection
    • IBar
    • IBoxSection
    • IChannel
    • ICircularHollowSection
    • ICircularSectionHole
    • IColdRolledCSectionWithCurvedLip
    • IColdRolledCSectionWithLip
    • IColdRolledEavesBeamSection
    • IColdRolledSection
    • IColdRolledSectionBase
    • ICompoundChannel
    • ICompoundSection
    • ICompoundSectionWithSource
    • ICompoundSectionWithTaperedSource
    • IConcreteFilledSection
    • IDoubleAngleSection
    • IDoubleAngleStarSection
    • IDoubleISection
      • GapBetweenSections
    • IDoubleISectionWithPlates
    • IDoublePlatedSection
    • IElementSection
    • IEncasedSection
    • IJoistCapacityData
    • IJoistGirderSection
    • ILinearAxialSpringSection
    • ILinearTorsionalSpringSection
    • ILinkElementSection
    • IMemberSection
    • INonLinearAxialSpringSection
    • INonLinearTorsionalSpringSection
    • INonParametricSection
    • IParametricCSection
    • IParametricCircularSection
    • IParametricElbowSection
    • IParametricISection
    • IParametricLSection
    • IParametricLozengeSection
    • IParametricParallelogramSection
    • IParametricPolygonSection
    • IParametricRectangularSection
    • IParametricSection
    • IParametricTSection
    • IParametricTrapeziumSection
    • IPlatedBackToBackChannel
    • IPlatedBackToBackChannelWithPlates
    • IPlatedFrontToFrontChannel
    • IPlatedFrontToFrontChannelWithHorizontalPlates
    • IPlatedFrontToFrontChannelWithVerticalPlates
    • IPlatedISectionV2
    • IPlatedISectionWithPlates
    • IPlatedIStarSection
    • IRectangularHollowSection
    • IRectangularSectionHole
    • IRod
    • IRolledISectionWithPlates
    • IRolledSteelJoist
    • ISection
    • ISectionFactory
    • ISectionHole
    • ISingleAngleSection
    • ISlimflorFabricatedBeamSection
    • ISolverElementSection
    • ISpringSection
    • ISquareHollowSection
    • ISteelJoist
    • ISymmetricISection
    • ITaperedISectionWithPlates
    • ITee
    • ITimberBeamSection
    • IVirtualJoist
    • IWallElementSection
    • IWestokCellularSection
    • IWestokDesignData
    • InitialOrientation
    • JoistSeries
    • JoistType
    • SectionGeometry
    • SectionGroup
    • SectionType
    • WestokBeamLocation
    • WestokBeamType
    • WestokDesignParameterState
  • TSD.API.Remoting.Service
  • TSD.API.Remoting.Settings
  • TSD.API.Remoting.Solver
  • TSD.API.Remoting.Structure
  • TSD.API.Remoting.Structure.Analysis
  • TSD.API.Remoting.Structure.Create
  • TSD.API.Remoting.Structure.Design
  • TSD.API.Remoting.Structure.Enums
  • TSD.API.Remoting.Structure.Validation
  • TSD.API.Remoting.Structure.WebOpenings
  • TSD.API.Remoting.Structure.WebOpenings.Create
  • TSD.API.Remoting.TabularResults
  • TSD.API.Remoting.TabularResults.Analysis
  • TSD.API.Remoting.TabularResults.Review
  • TSD.API.Remoting.Units
  • TSD.API.Remoting.UserDefinedAttributes
  • TSD.API.Remoting.UserDefinedAttributes.Create
  • TSD.Attributes
  • TSD.Core.RPC.Service

Interface IDoubleISection

Represents a double I section

Inherited Members
ICompoundSectionWithSource.Breadth
ICompoundSectionWithSource.Depth
ICompoundSectionWithSource.FlangeThickness
ICompoundSectionWithSource.RootRadius
ICompoundSectionWithSource.SourceSection
ICompoundSectionWithSource.WebThickness
ICompoundSection.MajorAxisElasticSectionModulus
ICompoundSection.MajorAxisRadiusOfGyration
ICompoundSection.Mass
ICompoundSection.MinorAxisElasticSectionModulus
ICompoundSection.MinorAxisRadiusOfGyration
ICompoundSection.SurfaceAreaPerUnitLength
INonParametricSection.Country
INonParametricSection.HeadCode
INonParametricSection.SectionGroup
INonParametricSection.SectionType
INonParametricSection.UnitSystem
ISection.CrossSectionalArea
ISection.LongName
ISection.MajorAxisSecondMomentOfArea
ISection.MaterialType
ISection.MinorAxisSecondMomentOfArea
ISection.SectionGeometry
ISection.ShearAreaLoadedParallelToMajorAxis
ISection.ShearAreaLoadedParallelToMinorAxis
ISection.ShortName
ISection.TorsionConstant
Namespace: TSD.API.Remoting.Sections
Assembly: TSD.API.Remoting.dll
Syntax
public interface IDoubleISection : ICompoundSectionWithSource, ICompoundSection, INonParametricSection, ISection

Properties

Name Description
GapBetweenSections

Gets the gap between individual sections (in [mm])

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