Mapping above ground planimetric features using LiDAR Dan Senner GIS AnalystRobert Chavez CAD Coordinator.

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Presentation transcript:

Mapping above ground planimetric features using LiDAR Dan Senner GIS AnalystRobert Chavez CAD Coordinator

Project Background Storm/Sanitary/Water piping conversion project completed Identified inaccuracies in District site plans/ campus map District GIS application PlantMan created 2

Jones Island Located in Milwaukee, WI Built in the early 1900’s Current site plan believed to be established by heads up digitization 3

4 GOAL: To create a survey grade site plan at Jones Island Uses: Update PlantMan Creation of Master CAD site drawings All future District contracts will utilize Master site plan Eliminate inconsistencies between GIS & CAD

Current Site Plan Inaccuracies 5

6 Missing Site in GIS CAD Site Plan

Current Site Plan Inaccuracies 7 Misplaced Sites in GIS CAD Site Plan

Current Site Plan Inaccuracies 8 Duplicate facility 282 on top does not exist

Site Plan Capture Options First Option: Traditional Survey done internally Work estimated at roughly 800 hours for Jones Island Second Option: Develop RFP for work to be done by a consultant using LiDAR 9

Deliverables 10

Consultant 11 RA Smith selected Work commenced Final deliverable received Significant time and cost savings to District

12 Results “Improved Accuracy”

13 Results “Improved Accuracy”

14

15 Results “Level Of Detail” Original Site Plan Updated Site Plan

16 Results “Level Of Detail” Original Site Plan Updated Site Plan

Scanner Details 17 Leica P20:  210 scan positions at JI  Three minutes per scan (not including set-up)  Line-of-sight scanning  Between 16 & 20 million points per scan  Survey Grade accuracy to an eighth of an inch Deliverables:  Final IMP (native) size 135GB  PTS file size 112GB, 12 files  TruView data set 11.4GB

TruView 18

Point Cloud Tools 19

GIS & CAD Improve GIS feature accuracy Surface creation to look at settlement issues Consistency between GIS & CAD 20

Looking Ahead South Shore Site Scan Import data to SDE Update PlantMan Test incorporating TruView into PlantMan Create Master CAD site drawing 21

QUESTIONS? 22

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