Land surveying may have been around for thousands of years, even in ancient times when Egyptians relied on a rope stretcher for simple geometry when re-establishing the boundaries after the Nile River floods. It is still practiced using traditional methods, but for time-sensitive projects that require quick and accurate results instantly, there are newer methods used by land surveyors, such as high-definition 3D laser scanning. While standard definition land surveys are still used in some projects, certain applications may require a swifter and dependable method like HD land surveys.
High-definition surveying is the non-intrusive way of collecting accurate and detailed as-built data. It is based on the newest, cutting-edge technology that uses a narrow laser beam to sweep across the target object. During the process, it is able to take hundreds of thousands of closely spaced measurements in minutes. The measurements are then displayed on a computer as the highly detailed representation of the area that was scanned. The results can be viewed and explored like a 3D model.
Standard definition land surveys provide only a two-dimensional look at the results, which can make it easier to miss out on critical details, especially when you need information for damage and condition assessment, clash/interference checking, tank/vessel volumetric information, and deformation analysis. The results generated by the HD survey can be useful for weld peaking reports, the creation and updating of as-built data, and 3D semi-automated modeling, too.
High definition land surveys are versatile and can be used for making 2D plans, too. This way, the results can complement the findings in a standard definition land survey. HD surveys can provide full 3D CAD models quickly and precisely from point clouds, and data can easily be exchanged between the scanner and many different CAD platforms. The speed and dependability of high definition land surveys make it more cost-effective for various industries, like construction, industrial, engineering, and architecture. It provides the advantage of enhanced worker safety and quicker project turnaround, too.