Post on 01-Jan-2017
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Modern technology with proven materials
In addition to the use of form, the selection of the right material
is of essential importance to the success of the project. Irre-
spective of whether its technical textiles (coated or uncoated
fabric) or technical plastics (ETFE foils) – when choosing the
material, the planned use, service life of the construction as
well as later maintenance costs should all be considered. Buil-
ding regulations, structural requirements and illumination of the
covered area are also to be taken into account.
Whatever your requirements, the team from CENO TEC will pro-
vide you with the perfect solution from one source.
“Through the economical use of high-quality materials and by exploiting the structural properties of spatial
systems, light, portable buildings can be created without significant dead weight. The construction is limited
to the absolute necessities.”
Prof. Dr.-Ing. Frei Otto
Tensile Structures – the perfect combination of functionality and aesthetics
Page Contents
2 Table of contents
3 Fascination in membrane construction
4 - 9 Translucent construction with technical textiles 10 - 15 Transparent construction with ETFE foils
16 - 17 Full Service – from design to construction 18 Ceno Tec expertise
Visual simplicity, fascinating spatial
and light effects, unconventional, cur-
ved shapes and expressiveness – all
these characterise constructions fea-
turing technical textiles. Virtually no
other form of construction offers such
individuality and design opportunities.
Textile roofs allow large areas to be co-
vered without the need for supporting
columns or large spaces to be enclosed.
No other architecture creates such wide
spans with such a minimal use of mate-
rials and energy.
fascination t e n s i l e structures
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Technical textiles are characterised by
high transparency and flexibility as well
as a low surface weight combined with
extremely high tensile strength. They
are not only a crucial design element,
but are a structurally indispensable part
of the overall construction thanks to the
pre-tensioning applied. When combined
with reinforcing features such as cab-
le structures and steel constructions,
membranes can be used to create an
almost unlimited number of surface
shapes.
Thanks to their high tensile strength (five times greater
than steel), coated fabrics can be used to create support-
free constructions with wide spans. Polyester fabrics are
available with either a plastic coating or glass fibre with
PTFE (Teflon®) or silicon coating.
Due to their high material flexibility, both plastic-coated
polyester fabric or high-quality PTFE fabric with a flexible
fluoropolymer coating are ideally suited for creating conver-
tible or temporary constructions.
Glass-fibre fabric with a PTFE (Teflon®) coating is particu-
larly noted for its durability, non-combustibility and the fact
that it is virtually self-cleaning.
The differences are illustrated in the table on page 7.
Translucent construction with technical textiles
Translucent construction with technical textiles
fascination tensile structures
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Translucent construction with technical textiles
Translucent construction with technical textiles
A comparison of technical textiles
All advantages at a glance:
• Individual shape and colour
• Low material costs
• Short planning, manufacturing and
assembly time
• Support-free roofing for large areas
• Temporary and portable constructions
possible
• Enclosed structures possible using
thermally insulated and soundproofed,
• multilayer membrane constructions
• Savings on lighting
• Long lifespan
• Excellent heat protection – high reflec-
tivity
• Excellent resistance to earthquakes
Polyester fabric PTFE – coated class fibre fabric PTFE - glass mesh fabric PTFE fabric with fluoropolymer coating
Basic fabric Polyester Glas Glas PTFE
Coating material and surface finish
Plastic Acrylic, fluoropolymer and PVDF coating PTFE PTFE/ETFE foil Fluoropolymer
Gesamtgewicht (g/qm) von 800 – 1450 ca. 800 - 1550 ca. 680 – 1050 1080
Tensile strength (N/5 cm) 3000/3000 – 9800/8300 4200/4000 – 8000/7000 Approx. 4000-5000 4000
Flex resistance Good Adequate Adequate Very good
UV resistance Good Very good Very good Very good
Stain resistance Good Very good Good Very good
Translucence Approx. 5-15% Approx. 8-15% Approx. 20-65% 19-38%
Colour Standard white, colour selection possible
After bleaching: white – limited colour selection on request
After bleaching: White White
Fire classification
DIN 4102 B1 flame retardant
EN 13501-1B – s2, d0
DIN 4102 A2 Non-combustible
(with reservations)
DIN 4102 B1flame retardan
EN 13501B – s1,d0
fascination tensile structures
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Translucent construction with technical textiles
Translucent construction with technical textiles
project examples
10 11
In modern architecture, transparent
constructions utilising ETFE foils are
gaining in importance due to their high
translucence and UV resistance. They
are used in membrane construction in
thicknesses of 0.05 to 0.25 mm. Ideal
applications include sectors where the
conventional approach would often be to
use glass (swimming pools, water parks,
atriums, skylights, zoos, greenhouses
and palm houses etc.). In addition to op-
timal daylight conditions, they can also
promote plant growth and facilitate na-
tural tanning in enclosed spaces. By par-
tially coating the foils, it is also possible
to produce a shading effect.
Transparent construction with ETFE foils
Transparent construction with ETFE foils
An overview of the properties and advantages of ETFE structures:
• Especially high light transmitting capacity of approx. 90% in
the visible wavelength range
• (from 400 – 700 nm/UV)
• High UV transmissibility, depending on the material thick-
ness
• Good thermal insulation: U values, depending on the number
of foil layers
• G value between 0.10 and 0.85 depending on the design and
alignment of the ‘tyres’
• Low weight of foil cushions, thereby facilitating light, intrica-
te substructures
• Very good mechanical properties: High tensile strength/tear
resistance and hail resistance
• Flame retardant – ETFE foils burn off without dripping
• Low maintenance costs due to anti-adhesive surface with
self-cleaning effect
• Interesting design options offered by printing, e.g. shading
without additional construction
• Long service life of at least 25 - 35 years
• Cost savings in comparison with conventional transparent
roof constructions
• High recyclability
fascination tensile structures
12 13 Transparent construction with ETFE foils
ETFE foil roofs are individually designed
to meet the structural requirements of
the building. To achieve a thermal insu-
lation effect, foil cushions with multi-
chamber systems are used.
U values :
• 1.51W/(m²K)
• 0.78W/(m²K)
Project-specific verification by a
hygrothermal analysis for Düsseldorf/
Duisburg.
Transparent construction with ETFE foils
Structures using multi-layer ETFE foils
As the foils are not fabric-reinforced, ETFE is primarily created
in the form of pneumatic cushions in a two or multi-layer design –
depending on the desired insulation value. These ‘tyres’ maintain
their form with permanent air support. The span of the individual
cushions can be up to 4.5 metres without requiring any additional
supporting structure. However, additional cable net reinforce-
ment allows for considerably larger spans. The air support and
controls can be largely automated.
Individual concepts enable the optimal design to be developed for
every project.
ETFE (Ethylen-Tetrafluor-Ethylen)
Base material Fluorpolymer
Total weight (g/m²) 175 (bei 100 μm)
Tensile strength (N/mm²)Longitudinal direction 51-58
Lateral direction 53
UV-resistance very good
Stain resistance very good
Translucence approx. 90 %
Colourhighly transparent,
printing and dyeing possible
Fire classification
DIN 4102 B1 flame retardant
EN 13501-1 / B-s1,d0
fascination tensile structures
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Transparent construction with ETFE foils
project examples
Transparent construction with ETFE foils
16 17
Scope
• Expert advice and support in the plan-
ning phase
• Provision of the testable statistical cal-
culation
• Creating the design plans
• Prefabrication of the entire structure,
the membrane and all accessories whi-
le maintaining the highest quality stan-
dards
• Delivery free to the construction site
• Complete installation from the top edge
of the foundations
• Service and maintenance
In all phases of the membrane construction, from the initial draft
to assembly, the experienced Ceno team of architects, engineers
and project managers will provide you with advice and practical
support.
You will benefit from our comprehensive experience in planning,
execution and installation, thereby ensuring that the realisation of
your idea doesn’t become an adventure but is a superior, aesthetic
structure.
Full-service membrane structures
Full service membrane construction
fascination tensile structures
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Quality guarantee
Together the Ceno clothing operation in Greven and the Sattler clothing
operation in Rudersdorf form a multi-site organisational unit. An expe-
rienced and qualified team of approximately 200 employees, state-
of-the-art manufacturing and processing technologies in a production
facility greater than 14,000 m2 in area as well as efficient project and
quality management guarantee consistently high quality standards.
Since 2004, the entire Group has been certified in accordance with DIN
ISO 9001:2000 and DIN ISO 14001:2004.
Other product areas
In addition to textile architecture, Ceno Tec enjoys great success
with membrane constructions in many other areas including:
• Flood protection systems
• Mobile noise protection barriers
• Hall cladding
• Biogas storage tanks
• Membrane structures for booth construction and interior architec-
ture (illuminated ceilings, room dividers etc.)
With Ceno Tec as a prominent partner for success
CENO TEC has a global reputation for
creating membrane structures of all sizes
and is one of the pioneers in this sector.
The origins of the company can be traced
back to Carl Nolte, a traditional compa-
ny that was processing textile fabrics as
long ago as 1875. Since 1996, Ceno
Tec has been an independent subsidia-
ry of the international company Sattler
AG which had its headquarters in Graz,
Austria. Sattler AG is one of the major
heavy-duty textile producers and coating
operations in Europe. The Sattler Group
is not only a European market leader in
sun protection fabrics but also manufac-
tures high-strength coated textiles for a
wide range of applications (including tex-
tile architecture).
fascination tensil e structures