Computer Aided Drafting & Design Standards

1 Tennessee Department of Transportation Survey & Roadway Design Computer - Aided Drafting & Design Standards All correspondence to CADD Support should be addressed to: Tennessee Department of Transportation Roadway Design Division CADD Support Suite 1300 James K. Polk Building Nashville, TN 37243-1402 Last Revision: April 2014. Table of C ontents Introduction .. 1 Standard Parameters .. 1 Standard File Extensions .. 1 Standard Filenames .. 2 Survey DGN Project Filenames .. 2 Roadway Design DGN Project Filenames .. 3 Data Exchange between Survey & Roadway Design Personnel .. 6 GPK Naming Conventions .. 6 Graphical Survey Data .. 6 Project Data Workflow .. 7 Non-Phased Project Data Workflow .. 7 Phased Project Data Workflow .. 8 Additional Information .. 10 Geopak Cogo Input Files .. 11 To load a Geopak Cogo input file .. 12 Standard MicroStation Seed Files.

2 13 Standard Office Templates .. 16 TDOT Letters .. 16 TDOT 2nd Sheets .. 17 TDOT Tabulated Quantities (English & Metric) .. 18 Survey 19 Standard Plot Control Files .. 20 Iplot & InterPlot Organizer .. 20 MicroStation Print & Print Organizer .. 22 Standard Line Weights\ 23 Standard MicroStation Libraries .. 24 Standard Color Table - .. 25 Standard Cell Area Patterning .. 26 Standard Text Sizes .. 27 Standard Fonts - .. 28 Standard Characters & Symbols .. 29 Standard Special Symbols .. 33 Standard Text Styles - .. 34 Text Style List .. 34 Standard Line Styles - .. 36 To manually use a line style at a particular scale make the appropriate settings as follows: .. 36 To change the scale of element(s) using a custom linestyle: .. 36 To change the location of text or symbols on an element using a custom linestyle to improve readability or appearance.

3 36 To flip or reverse the display of a custom linestyle .. 36 Custom Line Style Name List .. 37 Standard MicroStation Visual Basic Applications .. 41 Standard TDOT Roadway Design Division Interface .. 59 MicroStation Interface .. 59 MicroStation Configuration Variables .. 59 Standard MicroStation Level Mapping Files .. 60 Standard MicroStation Image Files .. 60 Standard Aerial Survey Files .. 61 Standard AutoTrack Design Vehicle Library .. 61 Standard Geopak Files .. 62 Design & Computation 62 Survey Feature Preferences .. 62 DTM/TIN Graphic 62 Label Style Files .. 62 Horizontal Alignment Spiral Curve Design Tables .. 62 Horizontal Alignment Turning Path Design Tables .. 63 Vertical Alignment Curve K Value Design Tables .. 63 Superelevation Preferences .. 63 Drainage Files .. 64 Drainage Report Format Files .. 65 Plan & Profile Sheet Production .. 65 Cross Section Sheet 65 Typical Sections and Criteria Files.

4 66 Roadway Typical Sections: .. 67 Non-Roadway Typical Sections: .. 68 Criteria Files: .. 69 Criteria Files not used directly by the typical sections: .. 71 Metric Criteria Files: .. 73 Construction Criteria Files: .. 75 Special Ditch & Benching Control .. 76 3PC Files for D&C Manager .. 78 Corridor Modeling Files .. 83 Standard Level Filters - .. 87 Sheet Level Structure Summary and Cross Reference - .. 90 Standard Levels and Element Parameters - .. 99 > Construction .. 100 > Design .. 101 > Functional .. 117 > Survey .. 119 Standard Cell Library Index .. 149 & .. 149 & .. 172 Manual Revisions .. 183 May, 2014 .. 183 November, 2013 .. 185 August, 2013 .. 188 February, 2013 .. 192 1 Introduction This manual shall be used as the standard for all Computer Aided drafted and designed plans development produced by and for the Roadway Design Division of the Tennessee Department of Transportation.

5 Survey submissions shall be in accordance with this manual and/or modifications contained in the consultant s contract or as prescribed by the Regional Survey Supervisor. Standard Parameters In order to establish standard parameters by which drawings are to be created, the following parameters have been established: 1. Accuracy Control through working units and resolution providing state wide coverage of the state coordinate system on a Design plane. This provides direct correlation of Design data point input to the coordinate plane reference point. Coordinates are based on NAD/83(1995). 2. Standard level, color, and weight assignments of Design elements assigned according to the type of sheet being generated. 3. Standard level names and text styles established through Design file level library 4. Cell development of over 1100 cells relating to Design elements, signing, sheet generation, etc.

6 The standard cell libraries are & for English-unit projects and & for metric projects. 5. Custom line style development of over 500 line styles in resource file for standardized display of linear Design elements. 6. Standard color table for standardized display of color coded Design elements. Standard File Extensions The following table lists the TDOT standard file extensions. In order to provide consistency with TDOT standard programs, these extensions shall be used with all Survey and Roadway Design files..CEL Cell Library .DGN Project Graphics Design File .SHT Project Sheet Graphics Design File .DGNLIB DGN Level & Text Style Library File .MFC Aerial Surveys T opography Graphics Design File .DTM Aerial Surveys Digital Terrain Model Graphics Design File .GPK Geopak Coordinate Geometry Database .TIN Geopak Digital Terrain Model File.

7 RSC miscellaneous Resource File..TBL Features, Color, etc., Table..TXT ASCII Text File. 2 Standard Filenames All graphical information is to be drawn at actual size at its corresponding state plane coordinate location. Only text and symbols (MicroStation cells) are scaled to appear correctly when plotted. Survey DGN Project Filenames The project s Survey DGN filename will consist of the two-digit county abbreviation, three-digit Project Route, the GPS project number and the file type. All files should use a .DGN extension. No spaces or extra periods should be used in any filename. The following is a more detailed explanation of the standard Survey DGN filename: The filename shall consist of the following parts: 11 two (2) letters to identify the project county location. (see county listing at the end of this section) 222 three (3) numbers to identify the project route.

8 -33 dash + two (2) numbers to identify the GPS project number. FileType file type as described below DGN standard file extension. Survey Project File Types: Survey Survey Topography and Profile data Example: SurveySUE Survey Subsurface Utility Engineering data Example: 3 Roadway Design DGN Project Filenames The project s Roadway Design DGN filenames will consist of the two-digit county abbreviation, the road name, and the file type name. All files should use a .DGN extension except for sheet files which should have .SHT for the extension. For plan sheet files other than cross sections, the filename shall consist of the sheet number only. Sheet numbers should include 0 prefixes as needed to ensure alphabetic sorting (Example for sheet 9A: ). No spaces or extra periods should be used in any filename due to compatibility issues with some software.

9 The following is a more detailed explanation of the standard Roadway Design DGN filename: The filename shall consist of the following parts: Co two (2) letters to identify the project county location. (see county listing at the end of this section) Roadname Alphanumeric to identify the state route number or road name if not a state route. FileType file type as described below DGN standard file extension (SHT for all plans sheets) Roadway Design Project File Types: These files are used for the development of project data which is referenced to project plan sheets. Alignments Proposed Horizontal & Vertical alignment data Example: Proposed Proposed Horizontal & Vertical data other than alignments shown on main plan sheets. Example: PropertyMap Property Map data Example: TrafficControl Traffic Control data Example: EPSC Erosion Prevention and Sediment Control data Example: ExistingContours Existing Contour data Example: DrainageMap Drainage Map data Example: ProposedContours Proposed Contour data Example: 4 Signalization Proposed Intersection Signalization data Example: NOTE: File in which all signalization work for intersections on the project will be done.

10 Utilities Proposed Utilities data Example: GEOPAK File Types: SEShapes Proposed GEOPAK superelevation shapes Example: DVSR155 SEShapes .DGN RoadwayPattern Roadway Cross Section pattern lines Includes mainline & side road pattern lines with a different symbology for each roadway. Example: CulvertPattern Culvert Cross Section pattern lines Example: PvtDrivePattern Private drive pattern lines Example: Cross Section File Types: (Use seed file ) roadwayXSections Roadway Cross Section data. Substitute a specific name for roadway, mainline or side road. Each roadway s cross sections will be in a separate DGN file. Example: CulvertXSections Culvert Cross Section data Example: PvtDriveProfiles Private drive profile data Example: Standard Sheet File Types: (Use .SHT extension) sht# All plan sheets, one sheet per file, sheet number only Examples: Sheet 4 > , Sheet 4A > Sheet 24 > Sheet 24A > roadwayXSections Roadway Cross Section sheets.