Case Study
Solid Timber Apartment Building
by Meickl, St. Johann in Tirol (AT)Airborne and impact noise insulation
in a multi-storey timber construction

Sound insulation without decoupledshells improves indoor environment
qualityCompliance with sound insulation
requirements demonstrated byconducting measurements on thecompleted buildingAirborne and Impact Noise
Protection for a Solid Timber
Apartment Building

Description of the project

The Getzner solution

In 2011 the timber construction andcarpentry company Raimund MeicklGmbH constructed a modern apartment building with solid wooden
panels to passive building standard.

Getzner offers a comprehensive
vibration isolation solution which
minimises sound transmission ina multi-storey solid timber
construction.

brackets were positioned correctly.
Expert on-site supervision of the installation work completed the integrated realisation of the Getzner
solution.

AI

Excellent sound insulation
without impairing climate control

top-quality indoor environment
requires effective protection
from airborne and impact noise.
Sound insulation within the building
is just as essential as sound insulation against noise from outside. The
construction company contacted
Getzner, a specialist in vibration insulation, for help in minimising soundtransmission. The result was an outstanding sound insulation solution.

n addition to designing an elastically suspended ceiling, the flanking
components and fasteners were alsoelastically decoupled. A high-quality
ceiling construction significantly reduces direct sound transmission.
Sound transmission via the flanking
components then becomes the key
factor. Getzner decoupled all thejoints between the walls and ceilings
using the high-tech material Sylodyn®
in order to overcome sound transmission by this route. To prevent soundbridges, the specially developed ABAI105 elastic angle brackets from Simpson Strong Tie® were used in conjunction with decoupled screws. Thiselastic fastening system optimallyseparates the building components –without affecting the load-bearing
capacity of the structure or increasing sound transmission.

In addition to the outstanding soundinsulation values achieved with thevibration isolation system, the solid
timber walls – some of which are ofdisplay quality and some clad withplastered wood-fibre boards – also
help to improve the quality of theindoor environment and therefore
to increase the value of the entire
building. "Our solution to vibration
isolation makes it possible to work on
the walls without using decoupledshells. This guarantees that the climate control effect of the solid timberwalls will be maintained," reports
Hendrik Reichelt, Product Manager
at Getzner.
Measurement methods and values
prove Getzner expertise

Simple installation

Elastic angle bracket
ABAI 105

Before installation, Getzner experts
calculated which types of Sylodyn®
should be placed in which positions inorder to achieve optimum vibration
isolation. They also provided clear
installation plans and insertion aids
to ensure that the elastic angle

A two-stage measurement method
at the building itself and reference
values from the "Ceiling structures
for multi-storey timber construction"
research project conducted by Holzforschung Austria prove the effectiveness of the Getzner solution. "Thevarious sound measurements clearlyExcellent sound insulation values were achieved
by decoupling the f lanking components

Feedback
demonstrate that excellent soundinsulation levels can be achieved bydecoupling all the flanking components", explains Lothar Säly, ProjectManager at Getzner.
Know-how: sound measurements
during the construction projectTwo independent sets of measurements were taken at different times
in order to confirm the effectivenessof the solution in this construction
project:– The first set of sound measurements without a suspended, decoupled ceiling gave a weighted
apparent sound reduction index R’w
of 59 dB and a weighted normalised
impact sound pressure level L’n,w of
46 dB. Transmission via secondarysound paths was also investigatedin this first set of measurements:
the sound transmission paths via
the ceiling (Dd) are 10 dB higher than
the flanking transmission paths (Ffand Df).
– The second set of sound measurements in the completed building
with a suspended ceiling gave aweighted apparent sound reduction
index R’w of 73 dB and a weighted
normalised impact sound pressurelevel L’n,w of 32 dB.

The test report confirms theeffectiveness of the system:

What does the client say
about the project?

» These sound insulation
values are the best I
have ever measured in atimber construction. «"All the insulation systems interact
perfectly. This project providesthe construction sector with real
evidence that results obtained byHolzforschung Austria can also be
implemented in practice," says
Martin Meickl of the timber construction and carpentry company
Raimund Meickl GmbH.

Hans-Peter Buschbacher,ssih consulting engineers,
sound measurement

Consistent decoupling of allsound transmission paths
1

Elastic angle bracket

2 Sylodyn® bedding strip
3 Elastically decoupled screw
4 Elastically decoupledceiling suspension

2

1
3

4

FdDfFf

4

Dd

Measured values
R’w 73 dB L’n,w 32 dB
D’nT,w 75 dB L’nT,w 30 dB2

Facts and figures at a glance
Solid timber apartment building by Meickl, St. Johann in Tirol (AT)

Products used:

Realisation:

Multi-storey passive building with three residential units
St. Johann in Tirol, Austria
Raimund Meickl GmbH & Co KG
Elastic decoupling of joints between wall and ceiling using Sylodyn®,elastically decoupled ceiling suspension using Sylodyn®, elastic fasteners
Sylodyn® strips
Elastic angle bracket ABAI 105 from Simpson Strong Tie®
Elastically decoupled screws
2011/2012

Getzner Werkstoffe GmbH

Construction references (extract)

Foundation:— Hallein/AT, retirement home,elastic decoupling of modular woodconstruction elements, 2012
— Atnau/CH, multi-family building,elastic decoupling of wall and ceilingelements, 2010
— Munich/DE, Pariserstraße,
elastic decoupling of walland ceiling elements, 2009
— Växjö/SE, Portvakten (passive building),
elastic decoupling of walland ceiling elements, 2008/2009— New York/USA, System 3, elastic mountingof a residential module for an exhibitionat the Museum of Modern Art, 2008

1969 (as a subsidiaryof Getzner, Mutter & Cie)
Chief Executive Officer: Ing. Jürgen RainalterEmployees:
420
2017 turnover:
EUR 95.2 million
Business areas:
Railway, construction, industry
Headquarter:
Bürs (AT)
Locations:
Berlin (DE), Munich (DE),
Stuttgart (DE), Lyon (FR),Amman (JO), Tokyo (JP),Pune (IN), Beijing (CN),Kunshan (CN), Charlotte (US)
Ratio of exports:
94 %AUSTRIA — Bürs GERMANY — Berlin — Munich — Stuttgart FRANCE — Lyon
JAPAN — Tokyo INDIA — Pune CHINA — Beijing USA — Charlotte

JORDAN — Amman
www.getzner.com

CS Meickl en © Copyright by Getzner Werkstoffe GmbH | 06-2018

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