SERUG - Mapping Utilities with Mobile GIS Applications
Mapping Utilities with Mobile GIS Applications
Kristy M. Capobianco Reynolds, Smith and Hills, Inc. GIS Analyst [email protected] (904) 256-2251 2007 ESRI Southeast User Group Conference May 5, 2007
JEA
JEA is the 8th Largest Utility Company in the Country JEA Services • • •
360,000 Electric Customers 240,000 Water Customers 184,000 Sewer Customers
JEA Electric Owns 3 Generating Plants and Shares Ownership of 2 Others Total Generating Capacity Is 2,361 MW of Power JEA Water Uses Groundwater from 150 Wells. JEA Has 44 Water Treatment Plants and 3,480 Miles of Water Piping JEA Sewer Has 2,500 Miles of Collection Piping and 6 Waste Water Treatment Plants
Project Background
Engineering, Construction and Services (EC&S) • 50 Million Dollar a Year Program • Manages Projects from Conception to Design to Permitting to Construction to Close Out
EC&S Problems
Projects Are Established with Sometimes Millions of Dollars Allotted to Them
Close Out of Projects/As-Builts Required Months of Time
Slow Close Outs Left Large Sums of Money Encumbered – Money That Should Be Used on Other Projects
Accuracy of the As-Builts Are Sometimes, at the Least, Questionable
Information Needed for JEA Crews with Leakage Problems
Solution
Take the As-Built Responsibilities from the Contractor
Use GPS/GIS Technology to Increase Accuracy
Continue with AutoCAD Drawings for Operations Personnel
Include GIS Maps for Data Evaluation and Hydraulic Analysis
Allows for a QA/QC Evaluation During Construction
New JEA Specifications
Standard Requirements for JEA Contractors • All contracts now include requirements which allow for more accurate As-Builts at a faster pace Stand pipe at every 100 feet allows a great degree of information for future maintenance crews Shooting every fitting and valve provides exact information immediately during emergencies regarding which valves must be closed Benchmark every 500 feet ensures the GPS Technician need only set up once for many points required Allows immediate QA/QC on the final product
Pipe Construction
Data Collection Methodology
GPS Collection Standards
The GPS data collector collects with a Trimble® GeoXH™ handheld unit coupled with a Zephyr™ antenna to acquire the highest horizontal accuracy possible (submeter in field or better if H-Star lock is acquired).
The JEA As-Builts Data Dictionary shall be used for all projects undertaken. This Data Dictionary contains all the features, attributes and standards of data needed for the project.
Mission planning must be conducted daily by the GPS data collector before heading into the field to determine the optimal time(s) for data collection. Some items that must be considered are PDOP and number of satellites available.
Data Collection Methodology
Point Features (valves, fittings, stand pipes, benchmarks)
All data will be collected using TerraSync™ software. Point features must have a minimum of 30 positions collected at a logging interval of 1 second.
Line Features (water, sewer, reclaim main)
Line features shall be collected using the averaged vertices method. This method allows several positions to be collected at each vertex (stand pipe), then averages these positions together to calculate one vertex position.
Differential Correction Differential correction (post-processing) must be conducted on each file that is downloaded from the GPS receiver.
This process will output a summary of estimated accuracies for all corrected positions. If features fall outside the acceptable range of accuracy (3-feet) they must be recollected by the GPS data collector.
Differential Correction After post-processing all data are exported as ESRI® shapefiles with the same coordinate system that the data was collected (US State Plane 1983, Florida East, NAD83 Feet).
The following attributes are generated on creation: Time and Date Recorded, Horizontal Precision, and Position (Northing and Easting).
Shapefile Creation and Editing
SAMPLE GIS MAPS
File Geodatabase Data Storage z
z
Easily and logically stores GIS data. Each draft has its own feature dataset that is populated with the newly created data.
Feature-Linked Annotation z
If an attribute of the GIS feature class is changed/deleted the annotation will automatically update with changes to the feature class.
Conversion to CAD Format ArcInfo License z
z
DWG 2004 format (JEA Standard). Select feature (valve, fitting, etc.) along with the annotation layer.
JEA STANDARD
Conversion to CAD Format
Creation of As-Built Plans
Next Steps: 3D Profile View
Benefits of GPS Data Collection
Savings Over Contractor’s Costs • Lake Forest Contractor at $105,000 • JEA Collection & As Built Costs at $71,336 • Savings on One Job of $33,664 or 32%
Improvement of the Accuracy of the Drawings • 85% of Data Is Within 15 cm or Less Than 1 Foot
Closeout Contracts Sooner – Releasing Funding Accurate QC & QA as the Project Is Installed Increase the Speed of the Process with GPS Equipment vs. Old Survey Methods Indirect Costs Savings • • • •
Less Administrative Costs Due to Long Closeout Periods Import Directly into GIS Database GIS Shapefiles for the Records Department AutoCAD for Design Engineers
Questions?
Contact Information: Kristy M. Capobianco Reynolds, Smith and Hills, Inc. GIS Analyst [email protected] (904) 256-2251
Kristy M. Capobianco Reynolds, Smith and Hills, Inc. GIS Analyst [email protected] (904) 256-2251 2007 ESRI Southeast User Group Conference May 5, 2007
JEA
JEA is the 8th Largest Utility Company in the Country JEA Services • • •
360,000 Electric Customers 240,000 Water Customers 184,000 Sewer Customers
JEA Electric Owns 3 Generating Plants and Shares Ownership of 2 Others Total Generating Capacity Is 2,361 MW of Power JEA Water Uses Groundwater from 150 Wells. JEA Has 44 Water Treatment Plants and 3,480 Miles of Water Piping JEA Sewer Has 2,500 Miles of Collection Piping and 6 Waste Water Treatment Plants
Project Background
Engineering, Construction and Services (EC&S) • 50 Million Dollar a Year Program • Manages Projects from Conception to Design to Permitting to Construction to Close Out
EC&S Problems
Projects Are Established with Sometimes Millions of Dollars Allotted to Them
Close Out of Projects/As-Builts Required Months of Time
Slow Close Outs Left Large Sums of Money Encumbered – Money That Should Be Used on Other Projects
Accuracy of the As-Builts Are Sometimes, at the Least, Questionable
Information Needed for JEA Crews with Leakage Problems
Solution
Take the As-Built Responsibilities from the Contractor
Use GPS/GIS Technology to Increase Accuracy
Continue with AutoCAD Drawings for Operations Personnel
Include GIS Maps for Data Evaluation and Hydraulic Analysis
Allows for a QA/QC Evaluation During Construction
New JEA Specifications
Standard Requirements for JEA Contractors • All contracts now include requirements which allow for more accurate As-Builts at a faster pace Stand pipe at every 100 feet allows a great degree of information for future maintenance crews Shooting every fitting and valve provides exact information immediately during emergencies regarding which valves must be closed Benchmark every 500 feet ensures the GPS Technician need only set up once for many points required Allows immediate QA/QC on the final product
Pipe Construction
Data Collection Methodology
GPS Collection Standards
The GPS data collector collects with a Trimble® GeoXH™ handheld unit coupled with a Zephyr™ antenna to acquire the highest horizontal accuracy possible (submeter in field or better if H-Star lock is acquired).
The JEA As-Builts Data Dictionary shall be used for all projects undertaken. This Data Dictionary contains all the features, attributes and standards of data needed for the project.
Mission planning must be conducted daily by the GPS data collector before heading into the field to determine the optimal time(s) for data collection. Some items that must be considered are PDOP and number of satellites available.
Data Collection Methodology
Point Features (valves, fittings, stand pipes, benchmarks)
All data will be collected using TerraSync™ software. Point features must have a minimum of 30 positions collected at a logging interval of 1 second.
Line Features (water, sewer, reclaim main)
Line features shall be collected using the averaged vertices method. This method allows several positions to be collected at each vertex (stand pipe), then averages these positions together to calculate one vertex position.
Differential Correction Differential correction (post-processing) must be conducted on each file that is downloaded from the GPS receiver.
This process will output a summary of estimated accuracies for all corrected positions. If features fall outside the acceptable range of accuracy (3-feet) they must be recollected by the GPS data collector.
Differential Correction After post-processing all data are exported as ESRI® shapefiles with the same coordinate system that the data was collected (US State Plane 1983, Florida East, NAD83 Feet).
The following attributes are generated on creation: Time and Date Recorded, Horizontal Precision, and Position (Northing and Easting).
Shapefile Creation and Editing
SAMPLE GIS MAPS
File Geodatabase Data Storage z
z
Easily and logically stores GIS data. Each draft has its own feature dataset that is populated with the newly created data.
Feature-Linked Annotation z
If an attribute of the GIS feature class is changed/deleted the annotation will automatically update with changes to the feature class.
Conversion to CAD Format ArcInfo License z
z
DWG 2004 format (JEA Standard). Select feature (valve, fitting, etc.) along with the annotation layer.
JEA STANDARD
Conversion to CAD Format
Creation of As-Built Plans
Next Steps: 3D Profile View
Benefits of GPS Data Collection
Savings Over Contractor’s Costs • Lake Forest Contractor at $105,000 • JEA Collection & As Built Costs at $71,336 • Savings on One Job of $33,664 or 32%
Improvement of the Accuracy of the Drawings • 85% of Data Is Within 15 cm or Less Than 1 Foot
Closeout Contracts Sooner – Releasing Funding Accurate QC & QA as the Project Is Installed Increase the Speed of the Process with GPS Equipment vs. Old Survey Methods Indirect Costs Savings • • • •
Less Administrative Costs Due to Long Closeout Periods Import Directly into GIS Database GIS Shapefiles for the Records Department AutoCAD for Design Engineers
Questions?
Contact Information: Kristy M. Capobianco Reynolds, Smith and Hills, Inc. GIS Analyst [email protected] (904) 256-2251
