Snow retention system

Concepts for the refitting of ski-jumps
with mat coverings for winter operation

Use summer ski jumps throughout the year

For small and large platforms: K15 to K180

Nets can be deployed on the inrun and landing slope.

The net which is made from strong plastic rope
offers reliable resistance to any slipping of the snow.

The robust and lightweight material is stabilized against UV-radiation and has a long lifespan. A fastening device gives the net additional stability.

Quick and easy to install

Perfected assembly technique

The assembly of the snow retaining nets is relatively simple. The snow retention system is mounted onto the ski-jump before
the winter season. The net is delivered as large bales, which are rolled out and folded out and fixed onto the platform. The size of the bales can be determined according to the customer’s requirements for each project.

Rapid installation saves running costs

This assembly system is extremely efficient. A well trained team of 6 persons can cover a K90 platform in five to eight hours for example. The disassembly in spring normally requires less time. The personnel costs are therefore kept to a minimum.

Installation supervision and instruction by technical personnel for the first assembly

The first installation of the SEIL-FREY snow retention system is supervised by a specialist from SEIL-FREY snow retention systems GmbH. At the same time ski-jump employees are trained in the assembly technique so that they can perform this without supervision in subsequent years.

Safety for users and designers

Snow retention concepts are important for the design of the ski-jump

Technically perfected snow retention systems are extremely important for the success of the all year round ski-jumps.
The demands placed on it are high:

The loads created by the snow must be carried safely.
It should function reliably during winter operations both with little or large quantities of snow.
Preparation of the snow using slope preparation equipment must also be possible.
Annual assembly must be easy and inexpensive.

Calculating the dimensions on the basis of static load calculations

The snow retaining net has the task of keeping up to 800 tons of snow from slipping. The snow retaining system must be capable of dealing with this load during a haw. A design for the load bearing of every platform is developed according to the known local snowfall statistics, and in consideration of any deployment of slope preparation vehicles. The dimensions of the load bearing system are determined on the basis of these calculations.

Alternative load-bearing concepts are possible

In general, various fastening concepts with differing advantages are feasible for snow retention systems, e.g. via wire ropes parallel to the ski-jump axis or parabolic shaped cables or via numerous anchor points directly fixed onto the concrete surface of the platform.

The renovation of jumping platforms

In the case of renovations or reprofiling, fastening concepts can be developed which use existing structural components such as concrete foundations, for example.

Construction of new ski-jumps

Various technical solutions are available for new building projects. In this case, we recommend a decision on the type of anchoring system early in the planning phase. Optimum solutions can then be found with respect to price and technical implementation.

Please contact us for a free consultation with our specialist engineer.

SEIL-FREY snow retention system

Recommended by satisfied customers

As a manufacturer of ropes and nets, we have made snow retention systems for ski-jumps with plastic mats since 1980. Close cooperation with many designers, ski-jump operators and technicians has enabled us to develop a system that has proved itself on over 120 ski jumps. Close cooperation with our customers is for us an important prerequisite for the successful further development of our product.

„Effortless and rapid assembly and disassembly of the snow retaining nets. Weather resistance and lack of decay of the materials, therefore a long lifespan for the snow retaining nets. Even with a thin layer of snow, the snow retaining net enables a continuation of the training and competition operations. There was therefore minimal effort to prepare the installation during winters with low snowfall.“

„In particular the rapid and uncomplicated assembly is to be emphasized. It is to be further emphasized, that despite sometimes very low levels of snow, the use of the ski-jump was always possible for training and competitions. Apart from that it appears that the flexible snow retaining nets have an advantage over the stiff cross beams which were used in the past, in that they protect the mat coverings.“

„We have used your snow retaining nets on our mat ski-jumps for two winters now, and our expectations have been met completely. The fastening fixtures supplied are adequate. A slipping of the net can be completely ruled out. We haven’t noticed any wear and tear up until now. The installation can be done in a very short time with only minimal assistance.“

„What is especially crucial for us is the suitability of the net for large quantities of snow. Even during such conditions we had optimum experiences with this system. We can assure you that the snow retaining net , although not the cheapest solution, is certainly the best currently. We are satisfied and recommend it further.”

„We can confirm that the snow retaining nets delivered by your company have met our expectations completely. The assembly, with the assistance of a few people from our club went smoothly and without problems.”

„The SEIL-FREY snow retaining nets have been used for two seasons and have fulfilled their function of preventing the snow slip-ping away to our fullest satisfaction. The assembly and disassembly is simple.“

„After being used for the twelfth winter since its delivery, we can assure you that the net is in practically same condition as on its delivery. Above all, we have never had problems with the winter preparations in the last twelfth years. The net is stable and shows no signs of wear and tear. We can finally confirm, that the decision to acquire the snow retaining net was the correct one.”

„The SEIL-FREY snow retaining nets have been used for two seasons and have fulfilled their function of preventing the snow slipping away to our fullest satisfaction. The assembly and disassembly is simple.“

These customer comments are taken from actual letters sent to the company SEIL-FREY GmbH.

Operating internationally since 1980

Austria

Bischofshofen	HS142	2003
Bischofshofen	K20	1996
Eisenerz	HS15, HS35, HS70, HS109	2015
Hinzenbach	K20/HS47	2004
Hinzenbach	HS90	2009
Höhnhart	HA15, HA30, HS55	2009
Innsbruck	HS128	2001
Kitzbühel	K40	2012
Murau	K20, K35	2003
Mürzzuschlag	HS65	2004
Ramsau	HS98	1995
Rottenmann	K10/K15, K30, K45	2003
Saalfelden	K30, HS65	2003
Saalfelden	K45	1993
Stams	K60, K105	1989
Tschagguns	HS22, HS40, HS66, HS108	2013
Villach	K15, HS32, HS65, HS98	1995
Schwarzach	HS55	2017

Switzerland

Einsiedeln	HS50, HS77	2005
Gibswil	HS15/HS25	2012
Gibswil	HS67	2006
Kandersteg	HS72, HS106	2015
Wildhaus	HS15, HS30, HS45	1989

Germany

Berchtesgaden	K30	1994
Berchtesgaden	HS98	1999
Bischofsgrün	K57	1983
Bischofsgrün	HS71	2002
Braunlage	K57	1988
Breitenberg	K15, K35, K75	1989
Breitenberg	HS78	2012
Furtwangen	K85	1985
Garmisch-Partenkirchen	HS142	2007
Garmisch-Partenkirchen	HS89	2002
Hinterzarten	K15, K30	2004
Hinterzarten	HS77	2005
Hinterzarten	K90	1981
Hinterzarten	HS109	1999
Isny	K15, K30, K60	1995
Johanngeorgenstadt	K13/K21, K36/HS55	2005
Klingenthal	HS85/HS65	2012
Klingenthal	HS140	2005
Meßstetten	K20	1999
Meßstetten	K40	1992
Oberhof	HS140	1998
Oberhof	HS70	2008
Oberhof	HS100	2002
Oberstdorf	K30	2000
Oberstdorf	K90	1997
Oberstdorf	K56, K120	2003
Oberwiesenthal	HS105	2001
Reit im Winkl	K55	1986
Ruhpolding	K20	2004
Willingen	K25/K45	2005
Winterberg	HS47	1985
Winterberg	HS87	2006
Zella-Mehlis	HS34	2010
Oberstdorf	HS20, HS40, HS75, HS106, HS140	2010
Oberstdorf	HS213	2016
Oberstdorf	HS25, HS42, HS106, HS137	2019

Czech Republic

Liberec	K120	2001
Libere	HS100, HS134	2008

China

Beijing / Shougang	Big Air	2019
Yabuli	HS100	2019
Zhangjiakou	HS105, HS70, HS40, HS25, HS15	2019

France

Chamonix	HS40	2015
Chaux-Neuve	K57	1991
Courchevel	K60	2004
Courchevel	K90, K120	1990
Gerardmer	HS72	2010
La Bresse	HS44	2011

Italy

Gallio	HS66	2006
Pellizzano	HS38	2012
Pragelato	K15, K30, HS66, HS106, HS140	2005
Predazzo	HS104, HS135	2005
St. Christina	K20/K30	2006
Tarvisio	K21, K31	2006

Norway

Oslo	HS106, HS134	2009
Trondheim	HS105, HS138	2010

Poland

Szczyrk	HS75	2008
Wisla	HS10, HS20, HS40	2015
Wisla	HS134	2008
Zakopane	HS140	2003
Zakopane	HS15, HS25, HS40, HS70, HS105	2020

Finland

Kuusamo

HS142

1995

Slovenia

Kranj	HS109	2004
Ljubno	HS 94	2018
Planica	HS15, HS30, HS45, HS60, HS85, HS104, HS135	2012

Slovakia

Strbské Pleso

HS100

1998

Sweden

Falun

HS134

2014

Wisla, Poland

Trondheim, Norway

Gerardmer, France

Hohnhart, Austria

Hinzenbach , Austria

Oslo , Norway

We offer the following services:

A cost-free consultation in the planning phase
Reliable information about the load conducting points of the snow retention system
The delivery of the snow retaining net for the inrun
The delivery of the snow retaining net for the landing slope
Instructions for use
Calculation of statics
Free, phone service
Five-year guarantee
Free hotline for all questions concerning snow retention

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