Presentation on theme: "Roadway Intersection Design In GEOPAK Site"— Presentation transcript:
1Roadway Intersection Design In GEOPAK Site Michael GilhamBentley Civil
2Presentation Overview What will we be looking at?We will investigate areas of Roadway design that have traditionally been a challenge with GEOPAK Road tools.At Grade Intersections.Ramp exitsGore AreasGore pond designIn this session, we will take proposed cross sections generated by roadway design to complete an intersection model with the Site Modeler tool. The methodologies discussed here can be utilized in other areas of tedious roadway designs to supplement the roadway project – examples include the infield of a loop ramp.
3Presentation Overview Why?User requests.Data and concept for this presentation supplied by:Mark LemieuxHNTB
4Why use Site Modeler?Amalgamates data from different sources into a single environment.GEOPAK SurveyChain and Profile AlignmentsCross SectionsShapesTIN files
5Why use Site Modeler? Speed of Design! Accuracy. Every design change is immediately visually displayed for the Designer.The design is dynamic and modifiable.Accuracy.Points are densely and strategically created which provides the Designer with a more complete design.
6We need to import the known Roadway data into Site Modeler. Where to start?We need to import the known Roadway data into Site Modeler.Existing Surface TIN.Roadway alignmentsFinished Surface TINs.Specific plan graphics.Edge of pavementEdge of mediansetc…
7Data Creation Options Create a TIN file from Roadway Cross Sections. GEOPAK provides 2 options to create TIN files directly from the roadway XS’s.XS Reports>DTM InputXS Reports>DTM Prop 3D
8Data Creation Options XS Reports>DTM Input Produces a DAT file of the Proposed surface.
9Data Creation Options XS Reports>DTM Prop 3D Produces a DAT file of the combined Proposed and Existing surface.
10Data Creation Options3D Modeling Tools > 3D Cross Sections.
11Data Creation Options 3D Modeling Tools > 3D Cross Sections. Draws the combined existing and proposed surface XS into a 3D DGN file.These can then be extracted to a DAT file and Triangulated using the DTM tools.
12Data Creation Options Superelevation Tools > Shape to DTM Surface. Produces a DAT file of the Shape surfaces.
13Best Option!!! Data Creation Options Superelevation Tools > Shape to DTM Surface.Best Option!!!
14Data Creation Options Superelevation Tools > Shape to DTM Surface. Make Shapes wider than pavement surface.Either create additional shapes (as shown) or
15Data Creation Options Superelevation Tools > Shape to DTM Surface. Make Shapes wider than pavement surface.Either create additional shapes (as shown) orCreate a new set of shapes with larger offsets.
16Data Creation OptionsAny of these DAT files can then be either imported directly into Site Modeler…Project>Import>Data>DAT File..or triangulated and imported to Site Modeler.Project>Import>Data>TIN File
17How to get the data into Modeler? Project>Import>Data>TINImport the Existing and Proposed TINs as Objects.Element>New/Edit>AlignmentsCreates a Site Element from COGO Chain and Profile.Element>New/Edit>DrapeCreate edge of pavement median elements by draping the MS graphic onto the corresponding TIN Object.
18What’s next? Start Modeling! After importing the known data, we will set about creating the unknown data.At Grade Intersections.Gore AreaInfield pond design