3D Modeling of the City of Temple Landfill

Leah Fasick - City of Temple

Transcript

1. 3D MODELING OF THE CITY OF TEMPLE LANDFILL LEAH FASICK GIS SPECIALIST CITY OF TEMPLE PUBLIC WORKS MAPPING & GIS
2. LANDFILL OVERVIEW •  Owned by the City of Temple •  Operated by Waste Management •  Solid waste accepted from all areas within the Central Texas COG •  269 permitted acres •  Will be expanded to 440 permitted acres •  Accepts 385,000 tons of solid waste per year on average •  33,000 tons in Sept 2015 •  Began recycling program in Jan of 2014 •  FY 2014-2015 collected almost 3,000 tons of recycled material
3. •  ESRI’s ArcMap •  3D Analyst toolset •  ESRI’s ArcScene •  CAD files provided by Waste Management •  3 different elevation files •  Permitted excavation grades (bottom liner) •  Feb 2014 topography •  Permitted final grades (when full) SOFTWARE AND DATA
4. Modeling Process •  Imported bottom liner CAD file into ArcMap •  Selected out cell boundary polylines •  Exported selected lines to a shapefile •  Used the cell boundary shapefile to select out elevations for specific area from all 3 CAD files •  Saved each elevation selection in different shapefiles for the liner, Feb 2014 topo, and final grade levels
5. Liner Shapefile Feb 2014 Shapefile Final Grade Shapefile MODELING PROCESS CONT.
6. Liner TIN Feb 2014 TIN Final Grade TIN MODELING PROCESS CONT.
7. MODELING PROCESS CONT.
8. •  Added 3 TIN files to ArcScene •  Added aerial images with the same base height as the TINs •  Within scene properties, set vertical exaggeration to 2 •  Set layer symbols to solid with transparency and illumination in scene properties for better 3D viewing MODELING PROCESS CONT.
9. MODELING PROCESS CONT.
12. MODEL ANALYSIS •  Created a landfill boundary polygon using the cell boundaries layer and saved 3 differently named copies corresponding to each TIN layer •  Used the Polygon Volume in the 3D Analyst toolset to calculate volume for each layer
13. ANALYSIS FINDINGS Landfill Volume as of Feb 2014 (liner total + 2014 total) 18,287,081 yd³ Landfill Volume when Full (liner total + final grade total) 22,963,308 yd³ Percentage Full as of Feb 2014 79.60%
14. FUTURE PLANS •  Obtain data from years prior to 2014 and future years to create a time line of landfill elevations •  Perform volume analysis and compare to Waste Management’s volume numbers for future years •  See how population growth within City of Temple has impacted landfill’s growth over the years
15. QUESTIONS??