Autodesk Design Suite 3D - Planix Home Design Suite 3D Manuale di Servizio Pagina 149
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Working with AutoCAD Land Development Desktop Drawing Tools to Create Lines and Curves
143
Drawing Spiral Curves
Spiral curves are often used in roadway design to achieve more gradual
transitions. Instead of having a constant rate of curvature like an arc,
the spiral’s curvature is adjusted throughout—a more gradual
curvature at the beginning, and then increasing the curvature until
the SC (spiral-to-curve) intersection is reached.
AutoCAD Land Development Desktop supports four types of
spirals: Clothoid, Quadratic, Cosinusoidal, and Sinusoidal. Each
spiral type has a different rate of curvature, as shown in the
following illustration.
- Contents 3
- Development Desktop 239 8
- Index 277 8
- What Is AutoCAD Land 10
- Development Desktop? 10
- AutoCAD Land Development 11
- Desktop Features 11
- Who Should Use AutoCAD Land 12
- What’s New in AutoCAD Land 14
- Development Desktop Release 2 14
- Upgrading from Autodesk S8 15
- Civil/Survey Products 15
- Chapter 1 Introduction 16
- Commands You Use Frequently? 17
- Desktop to Complete a Project 20
- Collecting Data 21
- Organizing Data 21
- Project Files 22
- Drawing 1 22
- Drawing 2 Drawing 3 22
- Defining Data to Databases 25
- Build 27
- Surface TIN 27
- Boundary Data 27
- Design Documents 29
- Recommendations for New Users 30
- How to Use This Guide 31
- Finding Information 32
- How to Use Online Help 33
- Getting Started with 38
- Starting AutoCAD Land 39
- The AutoCAD Land Development 41
- Desktop Drawing Environment 41
- Desktop Commands 42
- Pull-Down Menus 43
- Selecting a Menu Palette 44
- Customizing a Menu Palette 45
- MENULOAD Command 46
- Save a Menu Palette 46
- Change the Name or 46
- Description of a Menu 46
- Toolbars 47
- Status Bar 48
- Shortcut Menus 49
- Command Line 50
- Transparent Commands 51
- Text Window 52
- Desktop with Windows 53
- WARNING! 54
- Establishing Settings 55
- User Preferences 56
- Drawing Settings 58
- Prototype Settings 59
- Data File Settings 61
- IMPORTANT 63
- Window Display Options 64
- Saving a Profile 65
- Working with Projects 66
- Creating Projects 67
- Management Dialog Box 68
- Working with Drawings 71
- “Setting Up Drawings.” 72
- Setting up Drawings 73
- Set Up a Drawing Using the 75
- Drawing Setup Command 75
- Change the Base Point for a 75
- Change the North Rotation 76
- Track Northing and Easting 76
- Opening Drawings 78
- Viewing Drawings 79
- Using the Object Viewer 80
- Using Zoom and Pan 81
- Scaling Views 82
- Using Named Views 83
- Redrawing and Regenerating 85
- Working with Layer Groups 89
- Overview of Creating a 90
- Layer Group 90
- Filter Group 90
- Working with Layer Snapshots 91
- Using Drafting Settings 92
- Object Snaps 94
- Objects” in the online Help 95
- AutoSnap 96
- AutoTrack 97
- Using AutoTrack 98
- Plotting Your Drawings 99
- Key Concepts 100
- Working with 101
- COGO Points 101
- Introduction 102
- Users of S8 Civil/Survey 104
- Setting Up the Point Database 107
- Establishing Point Settings 108
- Working with Points 111
- Importing Points 112
- Create a Point 113
- Import/Export Format 113
- Add Points to the Drawing 116
- Change the COGO 116
- Database Import Options 116
- Import Points into the 117
- COGO Point Database 117
- Exporting Points 118
- Editing Points 120
- Synchronization 121
- Known Latitude and Longitude 123
- Change the Current Zone for 124
- Use the Geodetic Calculator 124
- Change the Geodetic Zone 125
- Transformation Settings 125
- Managing Points 127
- Locking and Unlocking Points 128
- Working with Point Groups 129
- Create a Point Group 130
- Overview of Locking and 131
- Unlocking Points 131
- Working with Description Keys 132
- Change the Point 135
- Insertion Settings 135
- Overview of Using the 135
- Description Key Manager 135
- Create a Description Key 136
- Overview of Using 136
- Description Parameters in 136
- Description Keys 136
- Change the Point Insertion 137
- Settings 137
- Create Points at Selected 137
- Coordinates 137
- (XDRefs) 138
- Create an External Point Data 140
- Reference 140
- Edit Point Label Style 141
- Properties 141
- Drawing and Editing 143
- Using Tiled Viewports 145
- Paper Space and Layout Mode 146
- Working with AutoCAD Land 148
- Drawing Spiral Curves 149
- Special Lines 150
- Construction Lines 152
- Polylines 152
- Curved Objects 154
- Curved Lines 154
- Hatch Patterns 155
- Creating an Associative 156
- Using Hatch Patterns 157
- Hatching Areas 157
- Working with Text 159
- Working with Curved Text 160
- Draw Text on a Curve 161
- Attaching Notes to Objects 162
- Adding Leaders to a Drawing 163
- Digitizing 164
- Choosing a Digitizing Method 165
- Working with Editing Tools 166
- Editing with Grips 168
- Selecting Objects First 169
- Grip Mode Cursor Menu 169
- Correcting Mistakes 170
- Modifying Drawing Objects 171
- Moving Objects 172
- Resizing Objects 172
- Inserting Breaks in Objects 173
- Grouping Objects Together 175
- Defining Blocks 176
- Selecting Objects 176
- Choosing the Command 176
- Inserting Blocks 176
- Attaching External Drawings 177
- Attaching Xrefs 178
- External Reference 178
- Dialog Box 178
- XCLIP Command 178
- Working with Surfaces 179
- Boundary Data in Surfaces 181
- Surface Accuracy 182
- Creating Surface Data 184
- Creating Breaklines to Use in 185
- Surface Generation 185
- Creating Contours to Use in 187
- Creating Boundaries to Use in 188
- Building Surfaces 189
- Create a New Surface 190
- Add Point Groups to the 190
- Surface Folder to Use in 190
- Build a Surface 191
- Building a Watershed Model 192
- Draw the Watershed 194
- Boundaries on the Surface 194
- Draw Water Drop Paths on 195
- Creating Finished Ground Data 196
- Editing Surfaces 197
- Visualization Tools 198
- Viewing Surface Statistics 199
- Characteristics of a Surface 199
- Creating Contours 202
- Create Contours from a 204
- Around a Building or Pond 205
- Create Contours From a 207
- Presenting Cut/Fill Results 209
- Conditions 210
- Creating Cadastral 213
- Information 213
- Working with Alignments 214
- Multi-User Alignment Database 215
- Alignment Databases 216
- Drawing Alignment Geometry 216
- Define an Alignment from 218
- Define an Alignment from a 218
- Polyline 218
- Making an Alignment Current 219
- Make an Alignment Current 220
- Select the Current Alignment 220
- Editing a Road Alignment 221
- Drafting Road Results 224
- Offset Alignments 225
- Working with Parcels 227
- Draw Parcels 229
- Change the Parcel Settings 229
- Define a Parcel from a 230
- Managing Parcels 231
- Listing and 233
- Annotating Plans 233
- Listing Object Data 234
- Inquiry Commands 235
- Alignment 236
- of the location is listed on 236
- Accessing Labeling Commands 238
- Style Properties Dialog Bar 239
- Specify How Labels Are 240
- Create Dynamic Labels 240
- Editing Label Styles 242
- AutoCAD Map and 244
- AutoCAD Land 244
- Development Desktop 244
- Using the AutoCAD Map 246
- Project Workspace 246
- Dragging Files 247
- Map Projects and Drawing Sets 248
- Drawing Sets and AutoCAD Land 249
- Development Desktop Projects 249
- Data Storage 249
- Start a New Drawing 250
- Create a Project 250
- Attach Drawings 251
- Select Drawings to Attach 251
- Drive Alias Administration 252
- Save a Project 252
- Defining Queries 253
- The Purposes of Queries 254
- Location Condition dialog 256
- Boundary Type Area 256
- Choose a Query Mode 256
- Saving Queried Data 257
- Editing With Grips 258
- Confirm Save Back dialog 258
- Insert Image dialog box 260
- Image Correlation dialog 261
- Digitizing Maps 262
- Cleaning up Maps 263
- Parcel Lines 264
- Clean Up a Drawing 266
- ADEDWGCLEAN 266
- Object Selection dialog box 266
- Cleanup Options dialog box 267
- Exporting Object Data 268
- ADEDEFDATA 270
- Table Name box 270
- Field Definition area 270
- Attach Data to an Object 271
- AutoCAD Map 272
- Assign a Coordinate System 273
- Select Global Coordinate 273
- System dialog box 273
- Creating Topologies 274
- Node Topologies 275
- Network Topologies 275
- Polygon Topologies 275
- Data to the Polygons 276
- Link Objects dialog box 277
- Creating Overlay Topologies 278
- Input Topology area 280
- Plotting Maps 281
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