How does 3D Building Surveying Work at DiConneX?

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The 3D surveying of buildings with a 3D laser scanner is probably the most powerful method for creating a digital survey. As the accessibility and accuracy of 2D plans are no longer up to date for today’s needs, 3D surveying has increasingly become the focus of attention in recent years. The increase in building volumes in existing buildings means that reliable documentation and up-to-date As-Built plans are becoming increasingly important. Innovative methods are required to keep costs in check.

We, at DiConneX, have been using one of these solutions for several years for the 3D surveying of buildings. With a mobile 3D laser scanner and panoramic cameras, we enable our customers to carry out a detailed and comprehensive inventory in the shortest possible time.

How Does Our 3D Surveying of Buildings Work?

Compared to conventional methods, such as 2D surveying using a total station, 3D surveying uses lasers to capture the entire space. The laser is deflected into the environment by a rotating mirror, reflected by it, and picked up again by the laser. By setting up the laser scanner at different locations, modern 3D laser scanners, thus, capture everything that is hit by the laser beam.

Whether age-related deformations, pipes, installations, machines, or breakthroughs – with the 3D surveying of buildings, the real conditions are accurately reproduced. The result of this measurement is then output as a point cloud, which can be opened, viewed, and edited with special CAD-BIM software and architecture programs.

Many use cases highlight that communication and organization via a 3D model significantly increase the efficiency of many processes in the building. Therefore, we use a modern form of 3D surveying for these use cases. Henrik explains how 3D surveying works using the mobile mapping system with the M6 Trolley from NavVis in the following video:

What Are the Advantages of Mobile 3D Surveying?

The traditional hand-held or total station survey reaches its limits, especially with complex shapes. This is because a decision must already be made during the measurement as to which measurement data should be recorded for which object. Measurements are only taken at specific points, which is why a complete image can only be captured with a great deal of effort. By combining different sensors on the M6 Trolley, we significantly increase the conventional recording speed with 3D surveying.

Our digital survey takes place in 6 steps:

1. Inspection of the property

2. Planning the routes with the trolley

3. Agreement on any additional measurements

4. Marking of the connection points (slam anchor)

5. Measuring with the M6 ​​trolley

6. Post-processing and quality assurance by DiConneX

Due to the fast recording, we manage to measure more than 1,600 square meters per hour with the M6 ​​trolley. A complete building with around 25,000 square meters can be scanned within 16 hours. In this way, the 3D surveying not only provides you with a point cloud but also panorama images that can be used in a web-based viewer and made accessible to all employees.

Can 3D Surveying of Buildings Reduce Costs?

The recording of significant points is and will remain the basic component of surveying. However, the admission procedures have developed significantly over time. Nowadays, one survey point is no longer sufficient. It has become apparent that it is advantageous to record the entire situation at a specific point in time. This makes it possible to return to the recording situation at any conceivable later point in time to access missing information.

Therefore, 3D surveying offers versatile possibilities within the scope of inventory and condition recording, area survey, and connectivity within the property. The point clouds with color information accurately depict the situation and allow for easy interpretation. In addition, individual areas can be supplemented so that any changes to the property can be documented in the best possible way.

Replacing the analog version with virtual planning thus saves a lot of costs in the long run. With the help of the laser scan and without additional software, those involved can get an impression of the property or future construction sites at any time and from anywhere. For example, external technicians can see in advance which working materials they need and what is required. The additional measuring function therefore also allows more accurate quotations to be prepared, which leads to increased planning reliability.

Furthermore, the work of different trades can already be coordinated on the virtual model and optimized in the customer’s interest, which makes remote maintenance possible. Communication is centralized via the 3D model and the browser-based viewer, so that unnecessary communication channels are reduced to a minimum. Further options for the integration of 3D surveying and how this leads to cost savings in the long term can be found in this article.

Fast 3D Surveying: Digitizing Buildings with DiConneX

Surveying in the form of 2D plans hardly meets today’s needs due to increasing requirements. 3D laser scanning of buildings is currently the most innovative and powerful tool in the field of surveying. At DiConneX, we have extensive know-how in the field of surveying. For this purpose, we use mobile laser scanning, terrestrial laser scanning, as well as recordings by drone flight. This means that our expertise also includes the evaluation of combined survey data and the calibration of multi-sensor systems.

Do you need a survey of your buildings or are you interested in a free initial consultation? Make an appointment with our experts in a simple and uncomplicated way.

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