Installation Guideline
Mass-Spring Systems

1. Transport and Storage
The Getzner products (Getzner MSS) for mass-spring
systems (MSS) must always be transported in original
packaging. The plastic wrapping protects the Getzner MSS
from environmental impacts.
Attention has to be paid during transportation to avoid
damages. Damaged packaging shall be immediatelyrepaired (using for example plastic foil and adhesive tape).
Full surface Getzner MSS are delivered in rolls and ina width of 1,500 mm and the side mats are delivered onpallets. The elastic mats are usually cut in the factory to theon-site requirements.
The Getzner MSS rolls have to be stored in an uprightstanding position in order to avoid squeezing of themats. The storage should be in dry environment inoriginal packaging and protection from direct sunlight isrecommended.
The elastic mats should not be stored at temperatures
below -20 °C and above +50 °C.
Getzner MSS are subject to normal thermal expansion /shrinking. This physical effect is completely reversible.
The storage conditions should match the installation
conditions; in case of big temperature differences betweenstorage and installation area, it’s recommended to condition
the Getzner MSS for at least 24 h.

2. General Description
Getzner MSS are high-tech polyurethane materials able
to withstand extreme static and dynamic loads. They
exhibit excellent resistance against all chemical substances
normally used in railway operations. Getzner MSS passed
all serviceability tests in accordance with DIN 45673-7:2010.
Although MSS from Getzner are tough and hard-wearing,some guidance for simple and efficient handling shallbe taken into account in order to enable a hassle-freeinstallation and the highest possible performance.
Attention: Please note that in case of bonding the matswith Diisocyanate containing bonding agents, staff
needs to be trained and certified conform EU legislation
2020/1149. More information you can find via link https://
safeusediisocyanates.eu/.

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Installation Guideline
Mass-Spring Systems

3. Installation Full Surface Getzner MSS
3.1 Preparation of the substructure
The substructure has to be clean and dry, frost-free as well
as free of depressions and sharp-edged elevations. Looseobjects, e. g. stones, have to be removed with appropriate
tools.

3.2 Placing of Getzner MSS
The mats are unrolled transversely to the track axis in order
to avoid mat joints in the driving direction of the train.
Possible length corrections of the mats or adjustments canbe done with a carpet knife (or similar). In case of extreme
temperatures and temperature differences, respectively
after long storage, the Getzner MSS should at first beunrolled, placed in position and left to settle for a few hours
prior to concreting. This allows the material to recoverfrom compression and stretching caused by rolling and onsite handling.
Penetrating objects of any kind (drainage, electrics, etc.)
have to be decoupled elastically.
Possibly existing shear keys must also be covered anddecoupled without any gap. Adhesive tapes have to be usedin order to cover all mat joints and minor gaps if any.

3.3 Connection of Getzner MSS / sealing of mat joints
The joints have to be covered and sealed with a fabric tape(min. 5 cm wide) in order to avoid penetration of concreteor concrete slurry during casting.
Not properly sealed joints can cause sound bridges andthe vibration isolation may totally fail.
For extra safety a plastic foil may be applied in addition tothe sealing with the adhesive tapes.
If radii are very narrow, some special measures have tobe taken (e. g. correction cuts on site). Please refer to theseparate document "Installation Instructions for MSS inCurves".

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Installation Guideline
Mass-Spring Systems

3.4 Installation of side mats
Depending on the type of material, mounting of verticalmats can be done in various ways (e. g. adhesive bonding,using mounting brackets).
When gluing, the mat is coated over the whole surface witha two-component solvent-free polyurethane adhesive bymeans of a notched trowel.
The adhesive type to be used depends on the respective
ambient temperature (not less than +5 °C). It can besupplied directly by Getzner Werkstoffe.
Roughly 1.0 kg adhesive per m2 side mat is required.
After completing the installed section it is recommended
to visually check the sealed mat joints again.

3.5 Reinforcement
After the above mentioned preparation, the spring layer
serves as a lost formwork. The armouring, which is
calculated by the authorised company (structural engineer),is placed according to the reinforcement plan, again
ensuring that the mats are not damaged. Excessive surface
loads or deflections have to be avoided by using appropriateload distribution layers (wood or plastic panels).

3.6 Pouring of concrete
Prior to the concrete process a final inspection and approval
may be necessary.
The concrete for the slab is brought in, compressed andlevelled.
The execution is incumbent on the responsible company.

3.7 Continuation of works
After the supply of the concrete, superstructure
construction works can continue like on any other railway
construction site (e. g. finishing surface, elastic sealing ofthe joints).

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Installation Guideline
Mass-Spring Systems

4. Installation Getzner Discrete and Strip
Bearings
4.1 Preparation of the substructure
The substructure has to be clean and dry, frost-free as well
as free of depressions and sharp-edged elevations. Loose
objects, e. g. stones, have to be removed with appropriate
tools.

4.2 Placing of Getzner MSS
The bearings are placed on the sub base (directly on thesmooth ground or - in case of uneven ground - on a smoothly
concreted foundation) as indicated in the installation plan.
The installation of the side mats is carried out as describedunder 3.4.
Joints between the mats must be sealed with an adhesive
tape (min. 5 cm wide).
Concreting the track slab for discrete or strip bearings canbe done in 3 different ways:— Option 1: Lost formwork— Option 2: In-situ slab on separation layer and lifting theslab after curing, placing the discrete bearings— Option 3: With filling material.
The execution of the slab is incumbent on the responsible
company.

4.2.1 Option 1: Lost formwork
The lost formwork (prefabricated slab elements, timberformwork or metal plates) is placed on the bearings.
All connections have to be sealed in order to prevent
concrete from penetrating into the cavities (by using e. g.
mortar, construction foam or foil).
Attention has to be paid while concreting to avoid any
damage to the seals and connections.

4.2.2 Option 2: In-situ slab on separation layer
The slab is created by pouring the concrete on a separation
layer. After curing of the concrete the slab has to be liftedfrom the concrete subbase (e. g. with hydraulic jacks) andthe discrete bearings can be installed.

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Mass-Spring Systems

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4.2.3 Option 3: With filling material

5. Recycling

The surface between the bearings should be filledwith soft material (e. g. Sylomer® SR11).
If accessibility is required after installation the surface
can also be filled with temporary filling material (e. g.
sand, void formwork).
For soft or low density material it is important to avoid
adverse compression induced by spaces supporting
heavy reinforcement. Therefore, the contact area
should be increased by using a suitable spacer.
The concrete can be poured directly on the bearings.
Depending on the filling material it is advisable todivide the concreting process into several steps.
If temporary filling material was used, it has to beremoved after the concreting process is finished.

Any waste generated during installation can be recycled
in standard waste containers.
At the end of the lifetime of the superstructure theGetzner MSS can be removed from the substructure
mechanically and recycled thermally. All our materials
are non-hazardous to the environment.

This guideline only serves to support the customer or hisauthorised specialist in the installation of Getzner MFS.
Getzner Werkstoffe draws the attention to known design
errors and problems. This guideline was compiled withthe utmost care based on Getzner’s current knowledge.
Getzner Werkstoffe assumes no warranty or liability forthe accuracy, completeness, topicality or quality of thisguideline. The customer is not entitled to any claimswhatsoever arising from the use of this guideline. Inparticular, Getzner Werkstoffe is not responsible for theproper installation of Getzner MFS and the resulting
negative effects on the condition / quality of Getzner MFS
or its performance. This guideline is merely intended asa strict recommendation and it is recommended that theinstallation is carried out by a specialist.
All other rights are reserved. In particular, all texts,photos, graphics, etc. are subject to copyright and areintended for business use solely. Additionally, sharing
with unauthorised third parties is expressly prohibited.

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6. Disclaimer