Case Study Hydroelectric Power Stations in Kempten

New construction and renovation of two hydro power plants in the immediate vicinity of a planned residential development

Planning and implementation of vibration mitigation measures despite dificult installation conditions

Considerably below the required limits for the neighbouring buildings Elastic Mounting of Machine Foundations and Buildings

Description of the project The Getzner Solution

etzner was responsible for imple- Effective protection against vibration Complete decoupling of the founda- Gmenting the vibration isolation tions with Sylomer® also guarantees during extensive renovation of the etzner Werkstoffe implemented a the acoustic and vibration protection Keselstraße and Füssener Straße run- Gfull-surface bearing for the power required here. Getzner irst deter- of-the-river power stations on the station in the Keselstraße: The loor mined, on the basis of the known Iller. The challenge in this project was slab on which the two power station loads, the most suitable Sylomer® to carry out vibration isolation while machines stand is elastically-mounted types and then supplied the mats on complying with the increased emis- and minimises the vibration and acou- schedule to the construction site. sions directives and to reduce struc- stic transfer to the surrounding resi- Installation was carried out, under ture-borne noise of the power station dential buildings. The side walls of the the supervision of Getzner experts, machinery by the required amount. new power station building were also by the executing building irm. In total fully decoupled from their surround- around 2,000 m2 of the material The new power station building in the ings with Sylomer®, from the lower Sylomer® was used. The overall solu- Keselstraße is directly linked with a edge of the loor slab to the top edge tion takes into account the needs of listed historic residential area. The old of the ground beneath. the residents and also complies with power station building in the Füssener the stringent requirements for listed Straße is a fully historical listed build- The listed power station building in the buildings. ing For both projects, it was therefore Füssener Straße also needed to be necessary to comply with increased eficiently protected against vibrations: acoustic and vibration protection “With its elastic bearing of the new requirements. While the Keselstraße machinery foundation, Getzner has power station is designed for two hyd- made an essential contribution to raulic machines, the Füssener Straße maximum acoustic isolation”, explains reservoir hydroelectric power station Michael Lucke, managing director of has just one. The aim of the vibration- the operator, Allgäuer Überlandwerk isolating measure was to effectively GmbH. protect the residents and the listed buildings from vibrations and secon- dary airborne noise.

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Planning – Concept – Implementation “The test measurements after completion of the project showed that all The fact that Getzner was not only residential compliance thresholds actively involved in the implemen- were complied with. There is even a tation but also in the planning process safety margin of error between the particularly contributed to the actual values and the specified success of the project: Firstly, the requirements. This confirms that the company specialises in developing measures for reducing vibrations and and manufacturing materials for particularly structure-borne noise vibration reduction. Secondly it acts transfer have been extremely effec- as a technical building consultant. tive.” With their calculations, its experien- ced specialistsprovided the technical Dipl.-Ing. Dr. techn. Hansjörg Schmid, foundations for the subsequent Ingenieurbüro für Technische Physik, decisions. Hall i. Tirol 4

“We were able to offer a technically “The Füssener Straße power station tried and tested optimum solution with was commissioned at the beginning of commercially viable conditions. The March 2011 and is a shining example material itself is impressive: it has an of a calm and quiet operation. As a homogenous material structure, is result, the Kempten town council has easy to install, absorbs very little been asked to approve the building water once itted and is easy to use, area directly adjacent to the reservoir even in the event of local damage. hydroelectric power station for resi- These arguments convinced the client” dential purposes.” explains Rainer Zindler, project man- ager at the Getzner site in Grünwald. Walter Feßler, TNA department, Allgäuer Überlandwerk GmbH Vibration protection therefore enables undisturbed use of neighbouring facilities.

Pictures: 1 cover photo, 2 Brigida González | 1-4 By kind permission of AÜW Facts and igures at a glance

Keselstraße and Füssener Straße hydroelectric power stations in Kempten

Operator and client: Allgäuer Überlandwerk GmbH, Kempten General construction: Xaver Lutzenberger GmbH & Co. KG, Pfaffenhausen General planning: RMD Consult, Munich Vibration isolation: Getzner Werkstoffe GmbH Services: Pre-planning, project management and project supervision, health and safety planning for both power stations Project duration: 11 months Project completion: End of 2010 Building and machine bearing Commissioning: March 2011 references

— Skyline Vienna, Vienna (AT) — Oslo Opera, Oslo (NO) Keselstraße power station — Drachen-Center, Basle (CH) Type: Laufwasserkraftwerk — The Rushmore Building, New York (US) Year of construction: 1958 | new build – completed 2010 — Bolshoi Theatre, Moscow (RU) Vibration solution: Full-surface elastic bearing of loor — Theatro National de Catalunya, slab and decoupling of side walls Barcelona (ES) with Sylomer® — Welfenhöfe, Munich (DE) — Arnulfpark, Munich (DE) Füssener Straße power station — Vier Sonnen luxury residential complex, Type: Reservoir hydroelectric power station Moscow (RU) Year of construction: 1927 | reconstruction – completed 2011

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