Mapping for ADA Compliancy

CONNECT. TRANSFORM. AUTOMATE.

Mapping for ADA Compliancy Raymond Kinser California CAD Solutions, Inc.

Project Plan

!  Map sidewalk and intersection defect data: !  Pedestrian Signals (177) !  Curb Ramps at Intersections (633) !  Sidewalk (Mid-Block) defects (33,133)

!  Use existing city street data !  Publish data to city GIS site and allow editing of

data through the GIS

Situation

!  City contracted and received a Sidewalk and Intersection defect dataset from an ADA consultant

!  City did not opt for the consultant’s original mapping proposal !  Delivery would have been on a GIS system

separate from the City’s existing GIS !  Funding wasn’t currently available

!  City needs to have the data mapped after the original project has been completed

Assumptions

!  Data would be: !  Mappable !  Clean !  Consistent !  Actual !  Referential !  Database compatible

!  What could possibly go wrong?!?

Reality

!  “Database” was multiple Excel files !  Data was FAR from clean and consistent

Reality (cont.)

!  Consultant used a road source they didn’t get from the City and they didn’t supply the road source to the City – (Street Segment References were useless)

!  Non-existent streets were entered !  Direction indicators were based on direction of

travel and not fixed compass bearing

!  Time to start sweating!!

Solution

!  Pray and fire up FME !  Catalog and fix data anomalies

!  Over 100,000 data edit issues to address !  Incorrect street names and designators !  Leading/trailing spaces as well as paragraph breaks !  Non-Existent streets !  Ambiguous location definitions

!  “ER Burton Park Chidren Playground South Entrance” !  “South DW at 189 el camino” !  “Home Depot and Lucky DW”

!  Create routine to correct data errors using AttributeTrimmers, Filters, Creators, & ValueMappers

Data Scrub

!  Iterative process: !  Run data normalization routine !  Examine the unmatched records !  Investigate reason for no-match !  Update FME routine with new data changes

!  End Result is database with corrected data

Create Street & Intersection Data

!  Used TopologyBuilder to create a street network

!  Start and end nodes for streets !  Unique list of streets at each intersection !  Count of road segments at intersection !  Combined streets with private streets !  Prep for adding new road segments

Create “Multi-Segment” Roads

Create “Multi-Segment” Roads

Create “Multi-Segment” Roads

!  Join individual road segments in AutoCAD !  Run FME Routine:

!  Assign start and end nodes from topology data (created in prior routine)

!  Assign unique segment ID !  Combine with existing network segments

Match Defect Record to Street Segment

!  Run FME routine: !  Match defect data records to street segment !  Determine and assign direction !  Make manual/specific assignments

Map Defects with Proper Street Offset

!  Mapping parameters dictated by client: !  Offset defects from centerline to proper side of

street !  Mix of points and lines based on defect length !  Make sure not to map defects in intersections

Map Defects !  Modify data to make processing easier with

Snipper in later routine

Snippers Rule!

!  Prep data for snipping

Snip The Data

Snipper Settings

Process Intersections

!  Unusable directional reference information mandated another method for placement !  Needed to rotate points around the intersection

!  FME Store to the Rescue! !  Found and downloaded the 2DDirectionExtender

!  Don’t Forget About the online FME Resources

Scatter Data Points

!  Quickly set of a couple of attributes and you are ready to go

In the GIS Ready to Edit and Report

Thank You!

!  Questions?

!  For more information: !  Raymond Kinser ([email protected]) !  California CAD Solutions, Inc.

!  www.calcad.com