LiDAR & CADD -NRCS Engineering Designs Norman Friedrich, P.E. West Union, IA

CADD Tools & Workflow Estimates vs Final Designs Getting the Design constructed LiDAR & CADD -NRCS Engineering Designs

CADD Tools & Workflow

Estimates vs Final Designs

Getting the Design constructed

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

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/LiDAR Workflow Obtain x,y,z,i files in useable format

Obtain x,y,z,i files in useable format

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

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

Returns Multiple returns 1 st return 2 nd return 3 rd return 4 th return Slide courtesy of USGS

Multiple returns

LiDAR data storage 500 GB External Hard drive County LiDAR data + adjoining counties USB powered (No power adapter needed)

500 GB External Hard drive

County LiDAR data + adjoining counties

USB powered (No power adapter needed)

Prep x,y,z files for CADD using Corpscon

Batch Prep of x,y,z files for CADD ALDPAT 1.0 - Airborne LIDAR Data Processing and Analysis Tools

ALDPAT 1.0 - Airborne LIDAR Data Processing and Analysis Tools

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

Obtain x,y,z,i files in useable format

Identify & Load x,y,z files into CAD

Create ground surface and contours

Indentify files needed Boundary of Area LiDAR Tile Boundaries

Create surface Leave points external to CADD

Leave points external to CADD

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

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

Export Data for Pond Design using Convert EP Pool Data

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

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

CADD - Embankment Earthfill = 27,711 cu yds Cut = 160 cu yds

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

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

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

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

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

LiDAR vs Type of Project Waterways – small DA Waterways – large DA, flat grades, GPS controlled construction Ponds – storage areas Ponds – earthwork quantities

Waterways – small DA

Waterways – large DA, flat grades, GPS controlled construction

Ponds – storage areas

Ponds – earthwork quantities

Implementation GPS using RTK Network (DOT - IA or MN) GPS using OPUS-RS adjustment Control Points Ground truthing Non-LiDAR points Culverts Property lines

GPS using RTK Network (DOT - IA or MN)

GPS using OPUS-RS adjustment

Control Points

Ground truthing

Non-LiDAR points

Culverts

Property lines

Implementation What is your plan? Correlation – Calibration - Verification

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]

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]

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