DATA LAYERING REQUIREMENTS

DATA LAYERING REQUIREMENTS

The data will be layered into the following features:

  1. Boundary Data - pertaining to this survey
  2. Road Centerline Data - new
  3. Lot Data - new
  4. Right of Way Data - new
  5. Easement Data - new
  6. Tie data to geodetic
  7. Control network - pertaining to this survey
  8. Monumentation Data - new
  9. Miscellaneous - all other data

Essentially data specific to the survey being submitted which is directly applicable to landbase maintenance is separated and split into seven layers. All other data is transmitted on a single layer.

The following table indicates which features must be transmitted digitally and which are desirable but not required:


Table 1: Data Layer Table

LAYER

CONTENTS

FEATURE

STATUS


1

 Boundary Data Boundary Line
Map Name		 Required
Required


2

 Road Centerline Data Centerline
Street Name
Descriptive Data		 Required
Required
Optional


3

 Lot/Parcel Data Lot Lines
Lot Numbers		 Required
Required


4

 Right of Way Data

Right of Way Lines
Street Widths
Descriptive Data

 Required
Required
Optional

5

 Easement Data Easement Lines
Descriptive Data		 Required
Required

6

 Tie Data  Graphic Representation
California Coordinate System values (where applicable) 		 Required
Required

7

 Monumentation Graphic Symbols
Descriptive Annotation		 Required
Optional

8

 Miscellaneous
 All Other Data - including ALL bearings, distances and curve data Optional

In cases where a linear element between two points applies to more than one feature, e.g. boundary line and lot line may be coincidental, this data may be submitted as:

  1. To avoid duplication of data one graphical element utilizing the following hierarchy to determine the appropriate layer for the graphics data.
    1. Right of Way
    2. Boundary
    3. Centerlines
    4. Lot Line
    5. Easement
  2. Duplicated graphical data sets with each data layer containing a full definition of the feature. For example: a line between two points which is both a boundary line and a lot line would appear on both the boundary layer and the lot line layer.
  3. A combination of 1) and 2) above. For example, lines which are both boundary lines and lot lines may utilize 2) above, while lines which are both right of way lines and lot lines may utilize 1) above.

Annotation which applies to more than one feature will not be duplicated. For example, a bearing may apply to geodetic ties, a boundary line and a street centerline. In such cases the following hierarchy will determine the appropriate layer for such annotation.

  1. Ties to Geodetic Control
  2. Boundary
  3. Centerline
  4. Right of Way
  5. Lot Line
  6. Easement

Appendix A is a graphical representation of this segregation of the data.

 

To CH. 5

TOC

To CH. 7