FS and SW survey
Structural Steel and Holding Down Bolt survey
Our core business at David Whelan Enterprises is the professional and reliable delivery of high-quality mapping data.
Again, we provide this in the world of aerial mapping. Drones provide the ability to capture on-demand maps for a fraction of the cost of traditional approaches using manned aircraft, and at a much higher resolution than satellites. Unlike satellite data we operate on an on-demand basis, and our drones fly quite low and so aren’t affected by cloud.
The resolution of our maps is usually 3.5cm per pixel (3.5cm GSD), which is enough to see a golf ball or matchbox, and if required we can provide higher resolutions. We can also process the data to deliver full 3D terrain models (e.g. DSM, DTM) and the accuracy of the 3D data is generally around 5cm laterally and 5-8cm vertical.
Moreover, these photos can be used for progress reporting and especially for quantity surveyors who often have to call up site foremen and engineers to update them on monthly progress. We recognise that our clients sometimes want a simple photograph to see chronological progress on their projects.
These outputs are fully geo-referenced and ortho-rectified meaning measurements and calculations can be taken directly from them. This can be anything from basic distance and area calculations right up to stockpile volume analysis, sightlines or measuring the grade of a surface for road planning or water runoff.
In an increasingly digitised world, our drones provide the ability to easily and accurately capture your site and gain all the benefits of computer modeling and analysis for planning or monitoring your projects.
Please contact us and let us help you in any area of surveying.