A CROSS LAMINATED TIMBER (CLT) CONSTRUCTION IN BURDEAUX, FRANCE

INTRODUCTION

Cross Laminated Timber (CLT) framing is made of layers of wood boards that are glued together. The boards of each layer are oriented perpendicular to the adjacent layers, so similar structural properties can be obtained in both directions.

In general, wooden structures are more difficult to soundproof due to their relatively low mass compared to concrete structures, making the proper selection of sound insulation products critical.

THE PRODUCTS TESTED WERE:

AKUSTIK 1 + SYLOMER

The Akustik 1 + Sylomer® hangers have been designed for the suspension of false acoustic ceilings, vibrating tubes and machinery that must be suspended. The outstanding properties of Sylomer® microcellular polyurethane leads to excellent insulation values compared to other supports that use rubber or cork or a combination of both.

These vibration isolators are manufactured in three special Sylomer® blends to best suit the load requirement of each application. A wide variety of fixing elements facilitate their installation, adapting to each type of construction. Its robust metal parts resist tensile loads from 650 to 1,000 kg and are coated with an anti-corrosion treatment, making them capable of withstanding the most demanding environments.

The natural frequency, when operating at optimal loading conditions, can reach values below 8 Hz. This leads to a high level of noise and vibration isolation when used in light wooden structures.

AKUSTIK + SYLOMER FLOOR MOUNT

The Akustik + Sylomer® floor mounts are vibration isolators that have been designed for the installation of wooden floors with a batten system. It is simple to install, has a low space requirement, and provides exceptional vibration and noise isolation.

These supports are normally installed every 0.5 meters. However, this can be adjusted to suit the load or natural frequency requirement of the application. The natural frequency, when operating at optimal loading conditions, can reach values below 12 Hz. This leads to a high level of noise and vibration isolation when used in light wooden structures.

TEST RESULTS

Between rooms S14 and S04R

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In order to show the acoustic advantages of using the Akustik 1 +Sylomer® hangers and the Akustik + Sylomer® floor mounts, impact noise and airborne noise tests were completed on a Cross Laminated Timber structure.

The objective of this installation is to comply with the Acoustic regulations and the Acoustic quality classification for on-site tests.

The results of the acoustic tests for each configuration are shown below:

E1 system

A1 system

B1 system

C1 system

D1 system

G1 system

F1 system

E2 system

A2 system

B2 system

C2 system

D2 system

G2 system

F2 system

E3 system

A3 system

B3 system

C3 system

D3 system

G3 system

F3 system

E4 system

B4 system

C4 system

D4 system

The results obtained indicate that in all the tested configurations we are following the acoustic regulations and the acoustic quality classification for on-site tests.

These results clearly show how effective the use of Akustik + Sylomer® supports can be on improving the sound insulation in CLT structures.

Do not hesitate to contact our application engineers for more information on this product.

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AKUSTIK LATERAL + SYLOMER

These acoustic hangers have been conceived for the suspension of false ceilings, vibrating pipelines and machinery that has to be suspended.

The excellent properties of the Sylomer® microcellular polyurethane material achieve elevated isolation values as opposed to other mounts that use rubber or cork, or a combination of both. These vibration isolators are manufactured in two special mixes of Sylomer® to adapt better to the load of each application.

A great variety of fixing metal armors and elements facilitate the installation and to adapt better to each type of job. Their rugged metal parts can withstand tensile stresses from 650Kg to 1000Kg. They are supplied with an anticorrosive treatment that can withstand the toughest environments.

TEST RESULTS

Between rooms S13 and S03R

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Note: The reference configuration E1 corresponds to the measurement between rooms S14 and S04R.

System H1

System I1

System J1

System H2

System I2

System J2

System H3

System I3

System J3

System H4

System I4

System J4