Friedrich - LiDAR CADD Engr. Design
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This document discusses the use of LiDAR and CAD tools in NRCS engineering designs. It outlines the NRCS software options for surface modeling, reservoir design, and waterway design. It also describes the LiDAR data collection process, preparing the data for CAD, and using it to create surfaces, determine pond volumes, and design embankments and waterways. Implementation involves using GPS networks for control and ground truthing.
![Web Links Corpscon http://crunch.tec.army.mil/software/corpscon/corpscon.html ALDPAT 1.0 - Airborne LIDAR Data Processing and Analysis Tools http://mitigation.fiu.edu/lidartool.html MN GPS network http://www.olmweb.dot.state.mn.us/CORS.GPS/cors.html IA GPS network http://www.iowadot.gov/rtn/index.html NRCS Iowa Convert EP Pool Data http://www.ia.nrcs.usda.gov/Technical/design/program.html CAD HowTo’s http://www.ia.nrcs.usda.gov/Technical/design/cadd_tools.html Iowa NRCS Contacts: [email_address] [email_address]](https://image.slidesharecdn.com/friedrich-lidarcaddengrdesign-090618155749-phpapp02/85/Friedrich-LiDAR-CADD-Engr-Design-25-320.jpg)
Friedrich - LiDAR CADD Engr. Design
- 1. LiDAR & CADD -NRCS Engineering Designs Norman Friedrich, P.E. West Union, IA
- 2. CADD Tools & Workflow Estimates vs Final Designs Getting the Design constructed LiDAR & CADD -NRCS Engineering Designs
- 4. Software - Existing NRCS options AutoCAD Map & Eagle Point (2006 +) Surface Modeling module Reservoir Detention module AutoCAD Civil 3D (2009) Stage Storage Extension Simplify Surface feature NRCS Engineering Field Tools (EFT) Survey Engineering Tool (SET) Waterway Design Tool (WDT) CADD Tools & Workflow
- 5. CADD/LiDAR Workflow Obtain x,y,z,i files in useable format
- 6. LiDAR data for CADD - Iowa BARE EARTH x,y,z,i 2 x 2 km tiles (988 acres) 36,424 tiles in Iowa 1.5 million data points/tile (~100 MB) 80 to 120 GB per county
- 7. Returns Multiple returns 1 st return 2 nd return 3 rd return 4 th return Slide courtesy of USGS
- 8. LiDAR data storage 500 GB External Hard drive County LiDAR data + adjoining counties USB powered (No power adapter needed)
- 9. Prep x,y,z files for CADD using Corpscon
- 10. Batch Prep of x,y,z files for CADD ALDPAT 1.0 - Airborne LIDAR Data Processing and Analysis Tools
- 11. CADD/LiDAR Workflow Obtain x,y,z,i files in useable format Identify & Load x,y,z files into CAD Create ground surface and contours
- 12. Indentify files needed Boundary of Area LiDAR Tile Boundaries
- 13. Create surface Leave points external to CADD
- 14. CADD/LiDAR Workflow Obtain x,y,z,i files in useable format Identify & Load x,y,z files into CAD Create ground surface and contours Ponds Determine Storage volumes & Export to WinPond or SITES
- 15. Export Data for Pond Design using Convert EP Pool Data
- 17. CADD/LiDAR Workflow Obtain x,y,z,i files in useable format Identify & Load x,y,z files into CAD Create ground surface and contours Ponds Determine Storage volumes & Export to WinPond or SITES Design Embankment Earthwork volumes
- 18. CADD - Embankment Earthfill = 27,711 cu yds Cut = 160 cu yds
- 19. CADD/LiDAR Workflow Obtain x,y,z,i files in useable format Identify & Load x,y,z files into CAD Create ground surface and contours Ponds Determine Storage volumes & Export to WinPond or SITES Design Embankment Earthwork volumes Waterways Proposed grade Design shape Evaluate fit of planned cross section Earthwork if needed
- 20. Iowa - Standard LiDAR Collection 1.4 meter sample density Filtering Automated removal ~90% of bad points Accuracy Vertical - Bare Earth -18.5 cm (0.6 ft) RMSE Vegetation - 37 cm (1.2 ft) RMSE
- 21. Comparison to RTK GPS 0.49 0.45 168 Watkins 0.41 -0.37 211 Paint Cr .018 0.03 26 Gouldsburg 0.30 -0.22 41 Westgate 6.52 6.5 2639 Lucas 5.46 4.88 204 Ringgold RMSE Ave Error # of Points Site
- 22. LiDAR vs Type of Project Waterways – small DA Waterways – large DA, flat grades, GPS controlled construction Ponds – storage areas Ponds – earthwork quantities
- 23. Implementation GPS using RTK Network (DOT - IA or MN) GPS using OPUS-RS adjustment Control Points Ground truthing Non-LiDAR points Culverts Property lines
- 24. Implementation What is your plan? Correlation – Calibration - Verification
- 25. Web Links Corpscon http://crunch.tec.army.mil/software/corpscon/corpscon.html ALDPAT 1.0 - Airborne LIDAR Data Processing and Analysis Tools http://mitigation.fiu.edu/lidartool.html MN GPS network http://www.olmweb.dot.state.mn.us/CORS.GPS/cors.html IA GPS network http://www.iowadot.gov/rtn/index.html NRCS Iowa Convert EP Pool Data http://www.ia.nrcs.usda.gov/Technical/design/program.html CAD HowTo’s http://www.ia.nrcs.usda.gov/Technical/design/cadd_tools.html Iowa NRCS Contacts: [email_address] [email_address]
- 26. The Natural Resources Conservation Service provides leadership in a partnership effort to help people conserve, maintain, and improve our natural resources and environment. An Equal Opportunity Provider and Employer
Editor's Notes
- #17: Welcome to the WinPond Workshop. My Name is: Tony Funderburk and I am an Agricultural Engineer for the Central National Technology Support Center (CNTSC) in Fort Worth, Texas I am the National Technical Contact for WinPond. I can be contacted at 817-509-3289 or tony.funderburk@ftw.usda.gov. I will be your instructor for this workshop. I want to make this an informal workshop, so please feel free to ask questions.
- #24: GPS Base station