Case Study
Drachen-Center Basle

Elastic division of residential andcommercial areas using full-surface
decoupling

Reduction of secondary air-borne
noise arising from the commercialarea

Strategic calculation: maximum
economy and proven effectivenessof the solution

Drachen-Center
Basle

Description of the project
Drachen-Center Baslen exclusive, ive-storey block ofapartments with an undergroundcar park was constructed in the heartof Basle’s banking centre. One major
challenge this project presented wasto minimise the secondary airborne
sound caused by vibrations.

AThe disruptive vibrations primarilyoriginate from the shopping centre
that is housed on the ground loor. A
further factor contributing to the problem is the tramline that runs close tothe Drachen-Center, subjecting thebuilding to additional shocks.

Implementation
The requirements that have to be met
concerning structure-borne soundprotection are particularly high forliving areas: there are set sound andvibration values for both day andnight which must not be exceeded.

Effective protection against oscillations and vibrations with Sylomer®
he irst stage consisted of deining the building’s natural systemfrequency, including the bearings.
Working on the basis of these results,Getzner worked with experts from
Trombik Ingenieure AG to develop asolution that protects the building
from oscillations and vibrations.
Trombik Ing. and Swiss sales partner
Angst+Pister Zurich were responsible for acceptance of the installation
work. The mats were laid by Implenia,
the general contractor of the project.
Using Sylomer® mats, Getzner separated the two sections of the building

TIn accordance with theload transfer by the loadbearing walls, Sylomer®
materials with variousrigidities were used.
A soft Sylomer ® material(yellow) was installed as
filler between these rigidsupports. In this project,
the bottom plate is 20 cm
thick.

which are used for different purposes,
thereby decoupling the building fromthe surrounding sources of vibrations.
For the living area, a natural systemfrequency of 15 Hz was required.
Thanks to complex calculations
and professional installation of theSylomer® mats, the vibration experts
were able to obtain a precise result.
In this project, as with so many others, the outstanding success achieved
was due to knowledge, expertise andexperience – measurements taken
after completion of the building
showed that the natural frequency of
14 Hz predicted in the calculations
had been achieved.

they are involved in the system development and implementation of projects from the very beginning. The
cooperation starts with deining theframework structural conditions andoften goes on to include joint development of innovations. Getzner’s
technical knowledge in the ield ofvibration insulation enables the creation of intelligent system solutions
with lexible materials, offering costeffectiveness, sound protection andcomfort.

Getzner delivered the optimal solution by drawing up strategic calculations – on the one hand the experienced technicians ensured that maximum eficiency was achieved, whilston the other hand the cost-effectiveness of the solution also played a major role in the project.

What does the acoustic consultant
responsible have to say about theproject?

Developer, manufacturer andstructural engineering consultant
Getzner Werkstoffe is not merely responsible for developing and manufacturing materials to absorb andinsulate vibrations. Getzner engineers
also have particular experience inproviding advice on structural issues
relating to vibration engineering andFeedback“With the Drachen-Center project,lexible decoupling of the building
was planned, due to the particular location of the apartment block directly
on top of the shopping centre. Following discussion of various technical solutions, full-surface decoupling
was carried out using the materialSylomer®. The system was designed
for a basic natural frequency of 14 Hz.
Following completion of the structural works, we took measurementsof the building section that had been
decoupled in a lexible manner. Dueto the wind-induced vibrations, it
was possible to measure the natural

frequencies in various positions andthe results of the calculations wereproven in terms of quality.
For many years, Getzner Werkstoffe
has been a competent partner in
the ield of structure-borne soundinsulation. It is tremendously important to provide the customer withlong-lasting and high-quality solutions, particularly when constructing
bearing systems for buildings andfoundations. Working together withthe technicians from Getzner, we areable to develop technically lawlessand cost-effective solutions that areprecisely tailored to our customers’requirements.”
Peter G. TrombikQualiied Civil Engineer (Swiss
Federal Institute of Technology)
Trombik Ingenieure AG

Trombik Ingenieure AG is a Swiss
engineering company that was established more than 50 years ago and isbased in Zurich. The services provided by Trombik Ingenieure AG encompass work in practically all ields ofconstruction engineering. The diverse
range of services available includes,in particular, building dynamics,building physics, vibration protection
and sound prooing, as well as room
acoustics.

Installation planGetzner Werkstoffe GmbHFoundation:
Chief Executive Oficer:
Employees:
2014 turnover:Business areas:
2014 output:
2014 recycling:
Headquarter:
Locations:

Ratio of exports:

1969 (as a subsidiary of Getzner,Mutter & Cie)Ing. Jürgen Rainalter
220 in Bürs, 100 abroad
70.3 Mio. EUR
Railway, construction, industry
7,367 tonnes of technical PU materials
17 tonnes of residual PU materials
Bürs (AT)
Berlin (DE), Munich (DE), Stuttgart (DE),
Lyon (FR), Amman (JO), Tokyo (JP),Pune (IN), Beijing (CN), Kunshan (CN),Charlotte (US)86 percent

AUSTRIA — Bürs GERMANY — Berlin — Munich — Stuttgart FRANCE — Lyon
JAPAN — Tokyo INDIA — Pune CHINA — Beijing USA — Charlotte— Beisheim Center Ritz-Carlton, Berlin— Biogen Institute – Central Boston— Casino and hotel, Jerusalem— National Training Centre, Tokyo— Lufthansa Head Ofices, Frankfurt— Kirloskar Oil Engines, Kagal, India— EADS, Manching site
— KahokuShimpo, Sendai, Japan— Ccppdeirali, Syria— Theatro National de Catalunya, Barcelona— Oslo Opera House— Riverside Boulevard – Manhattan, NYC— Skyline, Vienna

JORDAN — Amman
www.getzner.com

CS DC en © Copyright by Getzner Werkstoffe GmbH | 01-2016

References