Laser scanning is a useful tool for quickly acquiring 3D information for existing infrastructure. Some of the main functions are the registration and geo-registration of individual scans. Real time transfer of 3D points, 3D lines, 3D circle, 3D polygons, 3D areas and cuboids can then be used in CAD systems. The BSR is the largest urban waste disposal contractor in the EU and has its main office in Berlin-Tempelhof district. This project was located at the waste devaluation ground in Berlin-Ruhleben.
Scalypso is a newly developed software for the evaluation of 3D terrestrial laser scan data. The software combines the experience of 10 years work in 3D laser scanning and 3D modelling. Acting as a Modeler, the software consists of four different programmes and two modules and is fully integrated. By adding additional modules the software can be expanded based on project needs.
Some of the main functions are the registration and geo registration of individual scans. Real time transfer of 3D points, 3D lines, 3D circle, 3D polygons, 3D areas and cuboids can be used CAD systems such as Auto CAD or MicroStation. The automatic integration of objects for the generation of profiles, together with coordinate axis is also useful for evaluation purposes.
Fig. 1 - Indoor BSR Scan
Scalypso director Dr. Ralf König says: “The main aim to develop Scalypso is, to offer the customer an easy and fast programme with a lot of features for the evaluation of 3D point clouds. Everyone should be able to work with our software after a short introduction.” He adds: “To have cheap and functional software is that, what our customers want and need.” König points out, "that we attempt to provide value and service to our customers."
Berlin City Cleaning Company In spring 2011 our company had the assignment to measure and evaluate the Berlin City Cleaning Company (BSR) infrastructure site named the 'east pump'.
The BSR is the largest urban waste disposal contractor in the EU and has its main office in Berlin-Tempelhof district. The place of work was the waste devaluation ground in Berlin-Ruhleben.
One of the largest pumps in the whole pumping system is the east pump in the BSR area. The first task was to measure the entire room with all its different characteristics, and in the following steps we started the evaluation of the data using the Scalypso software solution.
The client pointed out, that he wanted a CAD model with all details containing every pipe, every room geometry and associated details. They needed an as-built drawing of the pipe rooms.
Project Aim The aim was it, to develop out of the 3 D point clouds with the help of the evaluation software Scalypso a CAD plan. Every window, every door and every offset should be evaluated and transformed into a CAD programme. For our customers it was very important that they had not to stop the machines and that the surveying was done without any interruption of the normal working process.
Using 3D laser scanning, we developed a solution that supported a contact free system. This allowed the agency to continue operation without interference and we were able to complete the work in a short priod of time.
The whole area contained about 10 rooms with the whole pumping systems. Because of complexity and changing environment in the work area including pipes and construction, the site was a perfect test area to trial and demonstrate the software functions.
Measuring the Infrastructure Firstly the workers allocated measuring marks throughout the rooms for the geo-referncing. With the help of the measuring marks the scans were transferred into one common coordinate system.
Shortly after all necessary preliminary work the survey began. Seventeen different scan positions were used to capture all data and the data was processed later in the office. Before we started the evaluation the row data had to be converted into the software *.syo format. The evaluator Stefanie Peda said: “The BSR project consisted of a large volume of point cloud data and the evaluation was time consuming.”
For the evaluation of the east pump two modules were especially important. The Pipe Module and the building information modelling module (BIM). Both modules were used quite often during the evaluation because of the large amount of pipes and the BIM module because of the many different rooms. After we generated the pipe runs, we transferred them in real time into our CAD system.
Different functions simplified the work with the pipe runs. Very helpful for our tasks were the different fittings, T-pieces or flange connections. These connections can be fit easily in the existing pipe run.
Every evaluator has its own strategy to evaluate such a project. Stefanie Peda said: “First of all I mark all important pieces and add polygons, rectangles or ellipses. Afterwards I start to export room geometries with the help of the BIM module to my CAD air system. That makes it easy to have a first overview about what is to come. The ground plan helps a lot to navigate through the scans.”
After she made the ground plan she added pipes and landing platforms into the CAD model. “With all of the constructions the evaluation was a large and comprehensive task.” Miss Peda said. After two weeks of evaluation everybody was convinced about the benefits and the result.
Conclusion In conclusion the BSR project was a good project to test nearly all software functions. With experienced staff the project proceeded in a timely manner and much was learned during the process. The project was completed successfully. “Working in such a huge complex is always interesting and if everything works out and ends successfully, we can say that it was a good project.” The director Ralf König said. In a short time the whole pipe area was surveyed and the regular work could be continued. The evaluation was completed and all data were exported to a CAD system.