A unique environmental project has become reality in Køge, Denmark: Various interest groups campaigned for rainwater management in a planned residential area and developed a state-of-the-art rainwater system.
The municipal water management company KLAR Forsyning, the contracted construction company Tscherning and other stakeholders designed an ingenious system of interconnected small ponds and basins: Before the rainwater that is collected in a residential area flows into the surrounding small streams, it has to be filtered and buffered. The aim is to purify the water in a natural way. To do this, it is allowed to flow through different layers. Plants that have the ability to eliminate microparticles are also used.
Tscherning built the catch basins and ponds as well as the water filter layers for this 190-hectare project. The MC-Max machine control system for excavators and crawlers from Topcon was used during the major construction project.
Machine control: mastering millimeter work
Some of the water filter layers must not be more than 7 cm thick. Extreme precision was therefore required. The use of the machine control system in conjunction with the Sitelink3D site management system (both from Topcon) enabled Tscherning's machine operators to carry out this precision work.
"When building the catch basins, we got it right first time. The machine control system allowed us to work very accurately with the excavator, guaranteeing precision down to the millimetre", says Ebbe Andersen, machine operator at Tscherning.
When operating the excavators, planning data is transferred directly from the machine control system to the machine, which makes work easier. As part of two-way communication, the data flows via Sitelink to the cloud and back again.
More personal responsibility with more sustainable results
According to Dennis Johansen, Data Manager at Tscherning, it is extremely motivating for the machine operators to maintain full control via the display during excavation. "Our machine operators get a better understanding of the overall situation than if they were just looking at bare earth." The machine control system allows them to work more independently and autonomously.
A daily updated evaluation of the cloud data has proven to be a further advantage in terms of economic aspects and efficiency, which, according to Johansen, has been increased by 60 %.
The project manager at KLAR Forsyning, Bettina Simonsen, is delighted with the speedy progress of the construction work: "For us as a contractor, it is an immense advantage that we can precisely control the quantities. Using this new technology will make the project more sustainable."
(Quelle: Topcon)
