The potential for using UAVs within the construction and civil engineering industry is significant yet their use is currently relatively limited. The main reason behind this is a lack of awareness of their potential and the range of benefits that they can bring, even though, right through from planning to final construction, nearly every stage of the engineering process can benefit from the use of a UAV.

1. Unmanned Aerial Vehicles
For the Construction Industry

2. UAVs – Benefits
Advantages over Land/Air Surveys

3. Services
• Topographical Surveys
• Mapping
• Aerial Photography/ Video
• LiDAR
• 3D Modelling & CAD

4. Topographical
Surveys

5. Surveying Techniques:
o Photogrammetry
o UAV LiDAR
o Land Survey

6. Work Flow
Data Collection

7. Case Study
Client: Land survey company
•Project
• 25 Ha Site
• Base model for construction development
• Design & Planning
•Task
• Terrain spot heights
• 3D line/point features (paths, fences,
telegraph poles
• 2D line features (vegetation extents)
•Deliverables
• AutoCAD layers
• Ground Truth Report Aerial Mosaic

8. Deliverables
Terrain
•Spot heights (3D points)
o Flat land - 10m intervals
o Steeper land – 5m intervals
Features
•Fences (3D lines)
•Vehicle Track Edges (3D lines)
•Telegraph Poles (3D points)
•High level vegetation (2D areas)
All exported as separate CAD layers

9. Ground Truthing
Point Count: 30
RMSE: 0.040m
NSSDA: 0.078m
ST DEV: 0.027m

10. Mapping

11. Mapping & 2D Vector Data
• High resolution
(10mm/pixel)
• Up-to-date
• Range of projections
• XY Accuracy within
50mm
• Asset Boundaries
• 2D CAD drawing
• High Quality

12. Aerial Photography
& Video

13. Progress Photography

14. Pre-Condition Survey
• Ortho-rectified geotiff
overlay
• Click photo locations to
open raw Images
• Viewable in Google
Earth & GIS software
• Fast Loading
(resolution scales with
zoom)

15. Aerial Video Production

16. LiDAR Surveys

17. LiDAR Data
Classified Point Cloud

18. LiDAR DTMs
Digital Terrain Model
• Automated routines
• Manual checking & tidy-up

19. Contours
• 0.5m intervals (variable)
• Simplification (smoothing) added to remove noisy data

20. 3D Modelling

21. 3D Asset Models

22. CAD Export
Can be exported in both local and geographical co-ordinate systems

23. 3D Landscapes
• 3D PDF
• OBJ
• Collada DAE
• Stanford PLY
• 3DS
• DXF Mesh
• VRML
• FBX
• Google Earth KMZ
Export Formats

24. pilot@remoteaerialsurveys.co.uk
www.remoteaerialsurveys.co.uk
01444 401840
@RAerialSurveys