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Optimize 3D Road Models with Seamless Data Exchange

Learn about changes in 3D Road Model 1.1 vs 1.2 for seamless data exchange. Understand simplified design cross-section and geometric transitions. Improve road design conventions.

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Optimize 3D Road Models with Seamless Data Exchange

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  1. Anläggnings- & vägmodeller från/till LandXML

  2. Om SBG – Svensk ByggnadsGeodesi • SBG grundades 1970 av Sven Vejde • SBG köptes av Hexagon Jan 2007 • Huvudkontor i Stockholm (Huddinge), Sverige • Utvecklat maskinstyrning sedan 1995 • ~30 anställda • Sålda licenser (ungefärligt): • Geo 3700 • GeoPad 2600 • GeoROG 1900 Adress: Elektronvägen1 14149Huddinge

  3. Vad gör SBG “Sömlöst data utbyte”

  4. www.landxml.org

  5. Changes to 3D Road Model 1.1 VS 1.2 <DesignCrossSect> • The design cross data model has been simplified. The CrossSectSurf (for sampled ground surface data) and the DesignCrossSectSurf (representing a designed surface) are now peers. The previous method of grouping <DesignCrossSectSurf> into left and right side collections is overly complicated. • A <DesginCrossSectSurf> is made up of <CrossSectPnt>s that can reference additional geometry to describe the geometric transition between two or more sections. Three types of geometry may be referenced Alignments, Parcel and PlanFeature. The accompanying *Refstation attribute specifies the station along the referenced geometry that the point lies on. • The dataFormat attribute is now optional and if not present defaults to offset distance, offset elevation format. Offset as measured from the centerline or profile grade line. • Two attributes were removed designLocation and connectionType because the information can be derived from the point data in cross section surfaces

  6. Example 1: Two lane road design cross section

  7. Example 2: Two lane road design cross section

  8. Example 3: Two lane road design cross section

  9. Road design cross section conventions: • All offset values are measured from the PGL and are horizontal measurements. • + offsets to the right, - to the left of and way from the PGL. • + slopes increase from PGL, - slopes decrease. • Right side closed volume surface point are defined clockwise from the top most point down. • Left side closed volume surface point are defined counter-clockwise from the top most point down. • Inner connection points begin from PGL, the previous closed volume surface outer connection point or after a simple slope/offset point.

  10. Tack! Tack för din uppmärksamhet! Kent Persson SBG AB

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