Edgerton flies aerial photogrammetry surveys to augment the excellent work performed by our ground-based survey and layout staff. Aerial photogrammetry enables us to very quickly and cost effectively provide customers with detailed survey data over large areas. If survey control is established, we can fly 100 acres in an hour and a half, upload the imagery and have it on the customer’s computer by the next morning. We share our data with our customers using a web application that acts like a very detailed and very current version of Google Earth. If they wish, our customers can visually inspect and measure their own data and answer own questions. The tools are simple to use and self-explanatory. We also offer training to customers who would like a bit of guidance to get started. This works especially well on sites where we do multiple surveys over the duration of the project. The data helps everyone achieve a shared understanding of exactly how the earthwork was performed and when.
Edgerton has performed dozens of accuracy checks over the years. On non-vegetated sites, we are confident that we will match traditional GPS survey data to +/- 0.15-FT. When we combine this level of accuracy at any given point with the extreme point density inherent to photogrammetry data, we believe we offer the best, most cost effective method for quantifying large material stockpiles and large active earthwork sites. We have found aerial photogrammetry to be the only safe way to collect detailed and repeatable data on actively failing bluffs along Lake Michigan.
Once we collect and process the photogrammetry imagery and survey data, it is available to customers to download and incorporate into CAD files. The data is flown in the established site coordinates, so the data and the associated imagery will drop into the CAD files at the exact location and orientation needed to be consistent other CAD data. Our engineers find that the photogrammetry imagery that comes with the survey data provides additional context that makes their site designs faster and more accurate.
We have been flying these surveys since 2014. Over the years, the data has gotten more accurate and useful in more ways. By adopting this technology, rigorously evaluating where it can be used and steadily pushing the limits, we have found another way for Edgerton to maintain the cutting edge…and for our customers to benefit along the way.
If you think you have a use for this type of data, please contact:
Jeremy Craven, P.E.
Phone: (414) 406-3974