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LineTerra

Guides

  • LineTerra

Symbols

  • ImportLAS
  • ImportLAZ
  • LAZtoLAS
  • LineTerra
  • LineTerraNewProject
  • LT3DView
  • LTAddStratum
  • LTAlignmentGraphics
  • LTAllRoadIntersections
  • LTArcGeometry
  • LTBakePolygon
  • LTBakeRoad
  • LTBezierGeometry
  • LTChainages
  • LTCombinedView
  • LTCombinedViewXS
  • LTConvertToGrid
  • LTCoordsToClipboard
  • LTCorridorGeographicPlot
  • LTCorridorLongSection
  • LTCorridorMultiSection
  • LTCorridorPanel
  • LTCorridorSection
  • LTCorridorView
  • LTCorridorWarpedBasemap
  • LTDesignZCurved
  • LTDesignZ
  • LTEPSGToZone
  • LTExpandAlignment
  • LTExportAlignment
  • LTExportCoords
  • LTExportEarthwork
  • LTExportPlanDXF
  • LTExportPlan
  • LTExportProfile
  • LTExportSectionsDXF
  • LTExportSectionsNB
  • LTExportSections
  • LTFindRoadIntersection
  • LTGeoElevContours
  • LTGeoGraphicsOverlay
  • LTGeoMapWithContours
  • LTGrade
  • LTGreatCircle
  • LTGridToLatLon
  • LTGroundZ
  • LTHelmertShiftLL
  • LTLatLonToGrid
  • LTLatLonToOSGB36
  • LTLatLonToUTM
  • LTLatLonToXY
  • LTLoadCorridor
  • LTLoadGeoElevationLL
  • LTLoadGeoElevation
  • LTLoadGeoTIFFMosaic
  • LTLoadGeoTIFF
  • LTLoadLAZMosaic
  • LTLoadLAZTerrain
  • LTLoadProject
  • LTLoadStratum
  • LTLoadXYZ
  • LTMarkAllIntersections
  • LTMetresToAngDeg
  • LTOSGB36ToLatLon
  • LTOSGB36ToWGS84Datum
  • LTOtherRoadsGraphics
  • LTOverlayPhotoInteractive
  • LTOverlayPhoto
  • LTPlanContours
  • LTPointAtChainage
  • LTPolygonQuantities
  • LTRefineTerrain
  • LTSampleGroundProfile
  • LTSampleStratumProfile
  • LTSaveProject
  • LTTerrainContourPreview
  • LTTerrainSourcePanel
  • LTUTMToLatLon
  • LTUTMZone
  • LTWaypointsToXY
  • LTWGS84ToOSGB36Datum
  • LTXSEarthwork
  • LTXSTemplates
  • LTXSView
  • LTXSWithWorks
  • LTXYToLatLon
  • LTXYZPointOverlay
  • $LTEarthRadius
  • $LTState
MalcolmWoodruff`LineTerra`
LTDesignZCurved
​
LTDesignZCurved[vips,kVals,ch]
gives the design level (RL) at chainage ch along the vertical profile vips, applying a parabolic vertical curve at each VIP whose K-value is given in the corresponding entry of kVals. A K-value of 0 leaves the grade line kinked at that VIP.
​
Details and Options
▪
The K-value is the length of vertical curve per one percent change of grade, so a larger K gives a longer, gentler curve.
▪
A K-value of 0 leaves the grade line kinked at that VIP, which is what LTDesignZ does everywhere.
​
Examples  
(1)
Basic Examples  
(1)
With no vertical curve the level at a VIP is the VIP's own level:
In[1]:=
LTDesignZCurved
[{{0,10.`},{100,20.`},{200,15.`}},{0,0,0},100]
Out[1]=
20.
The grade changes from +10% to -5% at that VIP, a change of 15%, so a K-value of 5 gives a 75 m vertical curve -- which lowers the crest by about 1.4 m:
In[2]:=
LTDesignZCurved
[{{0,10.`},{100,20.`},{200,15.`}},{0,5,0},100]
Out[2]=
18.5938
SeeAlso
LTDesignZ
 
▪
LTGrade
""

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