SURVEYS & PHOTOGRAMMETRY

Chapter 21

CADD Editing Manual

21 Third Edition CADD EDITING Date: November 2015

SURVEYS & PHOTOGRAMMETRY MANUAL 2

Table of Contents

21-1 GENERAL ............................................................................................................................5

21-1.1 Transmitted Files ....................................................................................................................... 5

AAreadme.docx ................................................................................................................... 5

081CD_001.dgn ................................................................................................................... 5

CONTROL.dgn...................................................................................................................... 5

TOPOG.dgn ......................................................................................................................... 5

DTM.dgn ............................................................................................................................. 5

ISAE.dgn .............................................................................................................................. 5

ISAE_DTM.dgn .................................................................................................................... 5

StreamProfile.dgn ............................................................................................................... 5

DTM.dat .............................................................................................................................. 5

DTM.tin ............................................................................................................................... 5

DTM_Alt.dat ........................................................................................................................ 5

DTM_Alt.tin ......................................................................................................................... 5

Obscured_areas.dat ............................................................................................................ 5

Obscured_areas.tin ............................................................................................................. 5

Job001.gpk .......................................................................................................................... 5

Mosaic.dgn .......................................................................................................................... 5

21-1.2 Current Resources ..................................................................................................................... 6

21-1.3 Stereo-compilation ................................................................................................................... 6

21-2 081CD_001 - Curve and Coordinate Data Sheet ....................................................................6

21-2.1 General ...................................................................................................................................... 6

21-2.2 Border Data ............................................................................................................................... 7

Top Border .......................................................................................................................... 7

Bottom Border .................................................................................................................... 7

21-2.3 Table Data ................................................................................................................................. 8

Text ..................................................................................................................................... 8

Horizontal Alignment Data ................................................................................................. 8

Curve Data .......................................................................................................................... 8

PLSS Data ............................................................................................................................ 9

Control Points ..................................................................................................................... 9

Reference Markers.............................................................................................................. 9

21-3 Control ............................................................................................................................. 10

21-3.1 General .................................................................................................................................... 10

Design Corridor ................................................................................................................. 10

21 Third Edition CADD EDITING Date: November 2015

SURVEYS & PHOTOGRAMMETRY MANUAL 3

North Arrow ...................................................................................................................... 10

Labels ................................................................................................................................ 10

21-3.2 Alignment Data ....................................................................................................................... 11

POT Labeling ..................................................................................................................... 11

Bearing Labels ................................................................................................................... 11

Equations .......................................................................................................................... 11

Alignment Points ............................................................................................................... 12

Calculated Points .............................................................................................................. 12

Tie Lines ............................................................................................................................ 12

Tangent Lines .................................................................................................................... 12

Curve Tables ...................................................................................................................... 12

Deflection angles .............................................................................................................. 13

21-3.3 Control Data ............................................................................................................................ 13

Survey Control Points........................................................................................................ 13

PLSS Lines .......................................................................................................................... 13

Bearing Labels ................................................................................................................... 14

Intersection Angles ........................................................................................................... 14

Tangent Lines .................................................................................................................... 14

PLSS Corners ..................................................................................................................... 15

Sections ............................................................................................................................. 15

21-3.4 Uncommon PLSS Corners, Monuments and Points ................................................................ 16

Witness Corners ................................................................................................................ 16

Calculated Corners ............................................................................................................ 16

Closing Corners ................................................................................................................. 16

21-3.5 Airports ................................................................................................................................... 17

21-3.6 Railroads .................................................................................................................................. 18

21-4 Topog ............................................................................................................................... 18

21-4.1 General .................................................................................................................................... 18

21-4.2 Annotation .............................................................................................................................. 18

Text Size ............................................................................................................................ 19

Abbreviations ................................................................................................