N3/M50 Topographical Survey

Case Studies

Project Case Study

N3/M50 UAV Aerial Topographical survey

This topographical survey project consisted of an aerial UAV survey of the N3 corridor from the M50 motorway to Clonee, Co. Meath. The area of interest was 7.5kms long and with an area of 385 Hectares. We used our SenseFly EbeeX fixed wing drone to carry out the survey over a number of days from 5 carefully chosen take-off/landing locations.

This lightweight and strong UAV with steep landing capability was perfect for safely taking off and landing in urban locations within the survey area. The survey was carried out safely and delivered on time by our UAV team who have over 20 years’ experience in producing aerial surveys.

Project solution

Our Project Solutions

  • The aerial survey and ground control were carried out utilising a variety of methods and technologies including using Trimble R12 GNSS receivers and Sensefly Ebee X fixed wing UAV.

  • A full geo-referenced 5cm pixel orthophoto was captured for the area of interest.

  • A detailed 1:500 scale topographical survey with 0.5m contours was delivered in AutoCAD format. A 5m grid of levels was also included with this output.

  • A GPS check survey of 100 points was surveyed on the ground and used to ensure quality control of the final product delivered to the client.

  • Project accuracies – Horizontal accuracy of +/-50mm for hard detail such as buildings, roads and walls and +/-75mm for soft detail such as vegetation and surface changes.  Vertical accuracy (levels) +/-75mm for hard detail and +/- 100mm accuracy for soft -detail.

Project delivery

The Final Results

  • 2D/3D Topographical Survey with Orthophoto background in AutoCAD format.

  • Ortho photo in GeoTIFF format.

  • TIN Model in AutoCAD format.

  • 5m Grid in ASCII format.

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Testimonials

What Our Clients Say

“We have worked with IO Geomatics on several public works projects, and they delivered a professional service and good quality surveys each time. Their measured surveys of historic streetscapes were a great base for one of our conservation projects."
5-Star Review from John McLaughlin Architects Katia Papkovskaia
Katia Papkovskaia
Director - John McLaughlin Architects
“Working with IO Geomatic has consistently provided us with accurate and reliable data. Their expertise in surveying has been invaluable to our projects. We recommend the services of Colin and his team without reservation.”
5 Star Review from CSEA Marcus Clifford
Marcus Clifford
Associate Director - Clifton Scannell Emerson Associates Consulting Engineers
“Shay Cleary Architects have collaborated with IO Geomatics on several projects to date, from dense urban sites to complex and demanding hillside conditions. We have always been impressed with the level of service provided and detailed survey information delivered within tight project timelines. The team are always very direct and accommodating to deal with, and we look forward to working on more projects together in the future.”
5 Star Review from Shay Cleary Architects
Karl Tobin
Architect - Shay Cleary Architects
“IO Geomatics have consistently provided accurate topographic and measured surveys to a high standard. The IO Geomatics Team site teams are professional and personable in their interactions with clients and the public. Working with their team has been a pleasure.”
5 Star Review from architect
Graham O’Sullivan
Architect