untilization of drones and scanning technology...utilization of drones and scanning technology in...
TRANSCRIPT
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UTILIZATION OF DRONES AND SCANNING TECHNOLOGY IN REMEDIATION AND REDEVELOPMENTOctober 16, 2019
Bret Stuntz – Senior ConsultantBret Hart – Manager, Design Services
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Presentation Overview• Current uses at SME • Commercial Drone Technology• 3D Laser Scanning• Questions?
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COMMERCIAL sUAS (DRONE) TECHNOLOGY
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What is an sUAS?
sUAS = “small Unmanned Aerial System”• Under 55 lbs aircraft and payload• 14 CFR Part 107 Regulated for commercial use• Section 333 Exemption for drones over 55 lbs• Includes VTOL (vertical take-off and landing) and fixed-wing drones
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Imaging Sensors• Visible Light (camera)
o Stills o Video
• Thermal• Light Detection and Ranging (LIDAR)• Multispectral
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Why Are We Talking About Them?
Diverse Applications• Photogrammetry • LiDAR scanning• Volumetric scans• Repeatable & safer inspections
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Flight Control – Drone Deploy & Pix4D
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Equipment Cost Lowering / Tech Improving
($2,500 with iPad/case/accessories)
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DJI Mavic 2 Pro
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What can they do? - Good…
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What can they do? - Good…
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What can they do? - Better…
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What can they do? - Better…
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During Today’s Site Visit4/23/17
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What can they do? - Better…
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During Today’s Site Visit4/23/17
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Technical Considerations
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• Higher Resolutiono Pros
• More accurate data• Better photo quality
o Cons• Longer flight time• More batteries consumed• More GCP’s set = more field work
• Accuracyo 100’ AGL = ±0.10”o 200’ AGL = ±0.20”
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Crushed Concrete Volume Survey – Plan View
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Crushed Concrete Volume Survey
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Case Study – Former AMC Headquarters
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• Site Survey• Volume Calculations (stockpiles)• Condition Assessments• Slope Stability (LiDAR)
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Stockpile Topographic Survey
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Topographic Survey and Stockpile Quantities
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Available Deliverable Formats
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• Ortho-Images• Point Cloud • AutoCAD “.dwg” files• Conceptual Renderings• Geo-Referenced PDF with project specific CAD overlays
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Landfill Design & Operation• Operational
o Measure compaction rateso Perform volume & airspace calculationso Ensure that landfill is being built as designed
• Maintenanceo Topographic surveys
• Identify areas of erosion, low soil coverage, standing water
o Methane monitoring
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3D LASER SCANNING
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Scanning Opportunities:• Volumetric Surveys• Building and Façade Evaluations• Tank Calibration/Inspection• Power Line Inspection/Clearance• Utility Design Surveys• Mine/Quarry Surveys• Excavation Surveys
3D Laser Scanning
Technical Specifications• Point Spacing
o 6.25mm, 12.5mm, 25mm or 50mm @ 50m
• Accuracyo 3D Position Accuracy @ 100m = 2.5mm
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Scanning Total Station
• Higher cost• Up to 600m range• Accurate to 14mm at 100m• Scans 26,600 points per second
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Trimble SX10
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3D Laser Scanning
Laser Scan and Conventional Survey Data
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3D Laser Scanning
Laser Scan and Conventional Survey Data
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640 Temple Street Detroit, Michigan
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640 Temple Street – Rooftop 3D Laser Scan
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640 Temple Street – Rooftop Topo Survey
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Remedial Excavations• Tracking excavation progress• Mapping sample points• Oversight on material removal
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Managing a Project? Some things to consider…
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• Equipment• Proximity of the Project Site to:
o “No Fly” Zoneso Pedestrian or vehicle traffic
• Weathero Seasons (winter would be bad for flying because of turbulent, thin
cold air and higher winds. • Staffing
o Training and bill rateso Project planningo Time on site to perform the necessary preliminary worko Time in the office to perform necessary post processingo Dedicated staff to act as operator when necessary
• 2:1 ratio of office to field time. o Processing higher quality grade data is ideal because it minimizes
field time and maximizes the return. o The cost of that is that much more time is needed in the office to
sort through the data and make it usable.
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Limitations• Controlled Airspace – FAA Regulations • Part 107 Limitations
o Beyond VLOS, daylight, not over people• Regulatory interpretations• Differing safety concerns• Privacy concerns• Weather
o Time of day (mid-day is best)o Conditions (visibility, cloud cover, snow, rain, fog)o Winter months = poor conditions
• Batteries!!!• Personnel – Need to be FAA Certified or under direct
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Questions?