Every challenge welcomed

Parking areas at the Institute of Science and Technology

If we're going to plan and develop a project for our customer, Swietelsky, which calls for custom designs pretty much everywhere, then why not also take on all the tasks from site supervision to the project's final acceptance while we're at it?

<p><strong>Demanding to the very end </strong></p><p>The new parking areas at the Institute of Science and Technology (IST) in Maria Gugging were a demanding project. So, absolutely perfect for us as specialists who thrive on exceptional challenges. Varying construction heights, an interior and exterior area, custom parts virtually everywhere, and a wealth of trades, including on-site welding work, are just some of the parameters that went into this project. Added to this came the entire site supervision of the drainage system through BG-Graspointner all the way down to the final acceptance.</p><p> </p><p> </p><p><strong>At home on new ground</strong></p><p>Robert Eder from BG-Graspointner had overall technical control over the project, which ran for practically the whole of the year 2020. He recalls:</p>
From the very outset, we were aware of two things: First: With this project, we were entering new ground. Second: We are up to the task.
<p><strong>Drainage over two levels</strong></p><p>In his plans, the architect had designed a poured asphalt structure (external dimension 5 cm, internal 3 cm) for the parking areas. The majority of the surface water would be able to drain through the channel grates. However, since poured asphalt is slightly water-permeable, some five to ten percent of water would seep in. Knowing this, a double bitumen seal has been installed under the poured asphalt to direct the water into the channel body underground. The result is a drainage system over two levels. </p><p> </p><p> </p><p><strong>Efficient development thanks to CAD </strong></p><p>Each channel component is made of stainless steel and custom-made. Travelling across it required that it comply with load class C (25 tonnes). Using computer-aided design, BG-Graspointner was able to design complex geometries and calculate the acting forces before start of production and thus achieve the required load class.</p><p> </p><p> </p><p><strong>Skilled welding work</strong></p><p>The top and bottom drainage levels were welded together at BG-Graspointner and then supplied to the building site as piece goods by the metre. Once on site, the individual pieces were slowly but surely further welded together to create the long channel bodies. To eliminate the possibility of subsequent corrosion occurring, the weld seams needed to be pickled. Nitric acid was used in the plant for this purpose, for example. Building sites are not conducive for working with or draining off nitric acid. With this in mind, Robert Eder and his colleagues used the TIG Brush system as this allows weld seams to be suitably treated after the event.</p><p> </p><p> </p><p><strong>We work with millimetre precision</strong></p><p>The varying substrate heights within the building&apos;s interior posed yet another challenge. Some of the substrate acts as a foundation, with other parts forming a ceiling over a parking level below. These disparities were evened out using insulation material. To create the millimetre-accurate channel structure, special height-adjustable feet were developed, produced and precisely aligned using lasers. The entire structure was then fully embedded in grouting.</p><p> </p><p> </p><p><strong>Developed and supplied in record time</strong></p><p>Once the CAD models had been checked and reviewed, we carried out the first load tests on the prototypes in June, received clearance in August and were able to deliver in September. All told, six weeks were all that were needed to develop and deliver the numerous custom parts. The speed of turnaround even caught us by surprise.</p><p> </p><p><strong>A satisfied client</strong></p><p>Our client, Gerald Berndl from the Swietelsky construction company, was equally very happy with the outcome.</p>
Whether the many custom-built products or the final acceptance, this was a demanding project on all levels, but their solution-oriented approach and the quality of the delivered results make BG-Graspointner one of our partners of choice for future projects.

Project profile

Project name

IST Maria Gugging 



Maria Gugging, Austria


Installed channel types

BG-FLEX V2a stainless steel evaporation channels with a second drainage level, sealing flange and adjustable feet included.


Grating type:

BG-FLEX FA mesh grating NW150 V2A, MW30/10, cl. C 250kN, locking bolts included.


Total length in metres

478 m


Services BG-Support

The product specifications requested by the architect and the client were perfectly implemented by our team of technicians!


- The channel body load class C 250kN was accomplished.

- Varying V2a stainless steel channel body heights

- Extra-wide sealing flange for the bitumen seal 

- Plan drawing and marking of the individual channel bodies and/or custom parts

- Creation of a bill of materials for the installation company

- Handover to the installation company

- Assistance with the monitoring of the installation work

- Final inspection involving the construction and installation companies

- Adherence to deadlines, even during the difficult Covid-19 era



Swietelsky AG


BG project team members

Robert Eder, Christoph Soriat, Dominik Stockhammer, Josef-Mario Resel



Maurer u. Partner, Arch. Georg Siegel


Building contractor

Bauleiter Swietelsky Dipl. Ing. (FH) Gerald Berndl, M. Eng.

MMG Mühringer Montage GMBH

Robert Eder
Technical Support
BG-Graspointner | Austria