FprEN 17097
(Main)Geosynthetics - Characteristics required for use in surface erosion control on slopes and banks
Geosynthetics - Characteristics required for use in surface erosion control on slopes and banks
This European Standard specifies the relevant characteristics of geosynthetics used in surface erosion control on slopes and banks and the appropriate test methods to determine these characteristics. This standard does not include external erosion control covered by EN 13253.
The intended use of these geosynthetics is to fulfil the function: surface erosion control.
This European Standard is not applicable to geosynthetic barriers, as defined in EN ISO 10318 1.
This European Standard provides for the assessment and verification of constancy of performance of the product to this European Standard and for factory production control procedures.
NOTE Particular application cases may contain requirements regarding additional properties and – preferably standardized – test methods, if they are technically relevant.
Geokunststoffe - Geforderte Eigenschaften, die für die Anwendung beim Bau von Oberflächenerosionsschutz für Böschungen und Mulden erforderlich sind
Dieses Dokument legt die Eigenschaften von Geotextilien und geotextilverwandten Produkten für Anwendungen zum Schützen gegen Oberflächenerosion nach EN ISO 10318 1 sowie die geeigneten Prüf-verfahren zur Bestimmung dieser Eigenschaften fest. Diese Norm behandelt die Oberflächenerosion durch an der Oberfläche befindliche Geotextilien und geotextilverwandte Produkte.
Dieses Dokument gilt nicht für geosynthetische Dichtungsbahnen nach EN ISO 10318 1.
Dieses Dokument gilt nicht für die in EN 13253 behandelten Erosionsschutzsysteme (Verhinderung des Abwanderns von feinkörnigen Materialien in Schichten von gröberen Materialien infolge von wechselnden hydraulischen Gefällen).
Dieses Dokument schließt die Sedimentationskontrolle oder Kanäle mit stetigem Durchfluss nicht ein.
Dieses Dokument behandelt die Bewertung und Überprüfung der Leistungsbeständigkeit des Produkts nach dieser Europäischen Norm, einschließlich der Verfahren für die werkseigene Produktionskontrolle.
Dieses Dokument legt Eigenschaften fest, die bezüglich der Leistungsangabe zu berücksichtigen sind.
Géosynthétiques - Caractéristiques requises pour le contrôle de l'érosion sur talus et berges
La présente norme européenne spécifie les caractéristiques pertinentes des géosynthétiques utilisés pour le contrôle de l'érosion de surface des talus et des berges et les méthodes d'essai appropriées pour déterminer ces caractéristiques. La présente norme ne couvre pas le contrôle de l'érosion externe, qui est traité par l'EN 13253.
L'utilisation prévue pour ces géosynthétiques les conduira à remplir la fonction suivante : contrôle de l'érosion de surface.
La présente norme européenne ne s'applique pas aux barrières géosynthétiques, telles qu'elles sont définies dans l'EN ISO 10318-1.
La présente norme européenne fournit les informations nécessaires à l'évaluation et à la vérification de la constance des performances du produit selon la présente norme européenne ainsi que les procédures de contrôle de la production en usine.
NOTE Certaines applications particulières peuvent nécessiter des exigences relatives à des propriétés et à des méthodes d'essai – de préférence normalisées - supplémentaires, si cela est pertinent d'un point de vue technique.
Geosintetika - Zahtevane lastnosti za uporabo pri nadzoru erozije na pobočjih in obrobjih
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2017
*HRVLQWHWLND=DKWHYDQHODVWQRVWL]DXSRUDERSULQDG]RUXHUR]LMHQDSRERþMLKLQ
REUREMLK
Geosynthetics - Characteristics required for use in surface erosion control on slopes and
banks
Geokunststoffe - Geforderte Eigenschaften, die für die Anwendung beim Bau von
Oberflächenerosionsschutz für Böschungen und Mulden erforderlich sind
Géosynthétiques - Caractéristiques requises pour le contrôle de l'érosion sur talus et
berges
Ta slovenski standard je istoveten z: prEN 17097
ICS:
59.080.70 Geotekstilije Geotextiles
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
prEN 17097
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2017
ICS 59.080.70
English Version
Geosynthetics - Characteristics required for use in surface
erosion control on slopes and banks
Geokunststoffe - Eigenschaften, die für die Anwendung
beim Bau von Oberflächenerosionsschutz für
Böschungen und Dämme erforderlich sind
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 189.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17097:2017 E
worldwide for CEN national Members.
prEN 17097:2017 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviations . 9
3.1 Terms and definitions . 9
3.2 Abbreviations . 10
4 Required characteristics and corresponding methods of test . 10
4.1 General . 10
4.2 Selection of the appropriate standard in a specific application . 12
4.3 Characteristics relevant to specific conditions of use . 15
5 Assessment and verification of constancy of performance (AVCP) . 15
5.1 General . 15
5.2 Type testing . 16
5.3 Factory production control (FPC) . 19
6 Marking . 24
Annex A (normative) Durability aspects . 25
A.1 General . 25
A.2 Microbiological resistance (of natural or biodegradable materials) . 27
A.3 Products used in non-reinforcing applications and with service lives up to 5 years . 27
A.4 Other applications and service lives up to 25 years, 50 years and 100 years . 27
Annex B (normative) Determination of thickness of erosion control products . 31
B.1 Scope . 31
B.2 Short description . 31
B.3 Execution . 31
B.4 Calculation . 32
B.5 Test report . 32
Annex C (normative) Determination of rebound resilience of erosion control products . 34
C.1 Scope . 34
C.2 Short description . 34
C.3 Execution . 34
C.4 Calculation . 34
C.5 Test report . 35
prEN 17097:2017 (E)
Annex D (normative) Behaviour of erosion control products at low and elevated
temperatures. 36
D.1 Scope . 36
D.2 Terms and definitions . 36
D.3 Environmental chamber . 37
D.4 Test specimens . 37
D.5 Conditioning for testing at low or elevated temperature . 37
D.6 Test procedure . 37
D.7 Calculations. 37
D.8 Test report . 38
Annex E (normative) Determination of opening size of erosion control products . 39
E.1 Scope . 39
E.2 Short description . 39
E.3 Execution . 39
E.4 Calculation. 41
E.5 Test report . 41
Annex F (normative) Determination of turf-filling ratio of erosion control products . 43
F.1 Scope . 43
F.2 Short description . 43
F.3 Execution . 43
F.4 Calculation. 46
F.5 Test report . 46
Annex G (normative) Determination of water absorption capacity of erosion control
products - Immersion method . 47
G.1 Scope . 47
G.2 Short description . 47
G.3 Execution . 47
G.4 Calculation. 49
G.5 Test report . 49
Annex H (normative) Determination of smoulder resistance of erosion control products . 50
H.1 Scope . 50
H.2 Apparatus . 50
H.3 Sampling . 51
H.4 Test Specimens . 51
H.5 Conditioning . 51
H.6 Procedure . 51
Annex I (normative) Environmental harmlessness test of erosion control products . 53
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I.1 Scope . 53
I.2 Short description . 53
I.3 Execution . 53
I.4 Parameter list and evaluation . 54
I.5 Test report . 56
Annex ZA (informative) Relationship of this European Standard with Regulation (EU)
No. 305/2011 . 57
ZA.1 Scope and relevant characteristics . 57
ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) . 58
ZA.3 Assignment of AVCP tasks . 58
Bibliography . 60
prEN 17097:2017 (E)
European foreword
This document (prEN 17097:2017) has been prepared by Technical Committee CEN/TC 189
“Geosynthetics”, the secretariat of which is held by NBN.
This document is currently submitted to the CEN Enquiry.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZA, which is an integral part of this
document.
prEN 17097:2017 (E)
Introduction
This European Standard allows manufacturers to describe geosynthetics on the basis of declared values
for characteristics relevant to the intended use and if tested to the specified method. It also includes
procedures for the assessment and verification of constancy of performance and factory production
control.
This European Standard may also be used by designers, end-users and other interested parties to define
which functions and conditions of use are relevant.
The term “product” used in this European Standard refers to geosynthetics.
This European Standard is part of a series of standards, addressing the requirements for geosynthetics
when used in a specific application.
prEN 17097:2017 (E)
1 Scope
This European Standard specifies the relevant characteristics of geosynthetics used in surface erosion
control on slopes and banks and the appropriate test methods to determine these characteristics. This
standard does not include external erosion control covered by EN 13253.
The intended use of these geosynthetics is to fulfil the function: surface erosion control.
This European Standard is not applicable to geosynthetic barriers, as defined in EN ISO 10318-1.
This European Standard provides for the assessment and verification of constancy of performance of
the product to this European Standard and for factory production control procedures.
NOTE Particular application cases may contain requirements regarding additional properties and –
preferably standardized – test methods, if they are technically relevant.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
CEN/TS 14416, Geosynthetic barriers - Test method for determining the resistance to roots
EN 1484, Water analysis - Guidelines for the determination of total organic carbon (TOC) and dissolved
organic carbon (DOC)
EN 1848-2, Flexible sheets for waterproofing - Determination of length, width, straightness and flatness -
Part 2: Plastic and rubber sheets for roof waterproofing
EN 12224, Geotextiles and geotextile-related products - Determination of the resistance to weathering
EN 12225, Geotextiles and geotextile-related products - Method for determining the microbiological
resistance by a soil burial test
EN 12226, Geosynthetics - General tests for evaluation following durability testing
EN 12447, Geotextiles and geotextile-related products - Screening test method for determining the
resistance to hydrolysis in water
EN 12457-1, Characterisation of waste - Leaching - Compliance test for leaching of granular waste
materials and sludges - Part 1: One stage batch test at a liquid to solid ratio of 2 l/kg for materials with
high solid content and with particle size below 4 mm (without or with size reduction)
EN 13501-1, Fire classification of construction products and building elements - Part 1: Classification
using data from reaction to fire tests
EN 1744-3, Tests for chemical properties of aggregates - Part 3: Preparation of eluates by leaching of
aggregates
EN ISO 291, Plastics - Standard atmospheres for conditioning and testing (ISO 291)
EN ISO 1043-1, Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special
characteristics (ISO 1043-1)
EN ISO 1856, Flexible cellular polymeric materials - Determination of compression set (ISO 1856)
prEN 17097:2017 (E)
EN ISO 3696, Water for analytical laboratory use - Specification and test methods (ISO 3696)
EN ISO 9862, Geosynthetics - Sampling and preparation of test specimens (ISO 9862)
EN ISO 9863-1, Geosynthetics - Determination of thickness at specified pressures - Part 1: Single layers
(ISO 9863-1)
EN ISO 9864, Geosynthetics - Test method for the determination of mass per unit area of geotextiles and
geotextile-related products (ISO 9864)
EN ISO 10318-1, Geosynthetics - Part 1: Terms and definitions (ISO 10318-1)
EN ISO 10319, Geosynthetics - Wide-width tensile test (ISO 10319)
EN ISO 10320, Geotextiles and geotextile-related products - Identification on site (ISO 10320)
EN ISO 11058, Geotextiles and geotextile-related products - Determination of water permeability
characteristics normal to the plane, without load (ISO 11058)
EN ISO 11925-2, Reaction to fire tests - Ignitability of products subjected to direct impingement of flame -
Part 2: Single-flame source test (ISO 11925-2)
EN ISO 12956, Geotextiles and geotextile-related products - Determination of the characteristic opening
size (ISO 12956:2010)
EN ISO 13426-1, Geotextiles and geotextile-related products - Strength of internal structural junctions -
Part 1: Geocells (ISO 13426-1)
EN ISO 13426-2, Geotextiles and geotextile-related products - Strength of internal structural junctions -
Part 2: Geocomposites (ISO 13426-2)
EN ISO 13438, Geotextiles and geotextile-related products - Screening test method for determining the
resistance to oxidation (ISO 13438)
EN ISO 25619-2, Geosynthetics - Determination of compression behaviour - Part 2: Determination of
short-term compression behaviour (ISO 25619-2)
ISO 565, Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes
of openings
ISO 3310-1, Test sieves — Technical requirements and testing — Part 1: Test sieves of metal wire cloth
ASTM D4603-03(2011)e1, Standard Test Method for Determining Inherent Viscosity of Poly(Ethylene
Terephthalate) (PET) by Glass Capillary Viscometer
ASTM D6567, Standard Test Method for Measuring the Light Penetration of a Turf Reinforcement Mat
(TRM)
ASTM D7322, Standard Test Method for Determination of Rolled Erosion Control Product (RECP) Ability
to Encourage Seed Germination and Plant Growth Under Bench-Scale Conditions
ASTM D7409 — 07e1, Standard Test Method for Carboxyl End Group Content of Polyethylene
Terephthalate (PET) Yarns
prEN 17097:2017 (E)
ASTM D7748, Standard Test Method for Flexural Rigidity of Geogrids, Geotextiles and Related Products
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 10318-1 and the following
apply.
3.1.1
product
geosynthetic including erosion control products made of 100% natural components, e.g. coir, jute,
straw, wool
3.1.2
specification
any document in which the work, functions and specific conditions of use of the product are described
3.1.3
rework material (RWM)
material that is generated in a process and capable of being reclaimed within the same process that
generated it
3.1.4
post-consumer material (PCM)
material generated by households or by commercial, industrial and institutional facilities in their role as
end-users of the product which can no longer be used for its intended purpose. This includes returns of
material from the distribution chain
3.1.5
post-industrial material (PIM)
material diverted from the waste stream during a manufacturing process
3.1.6
surface erosion control (SEC)
the use of a geosynthetic material to prevent or limit soil or other particle movements at the surface of,
for example, a slope or a bank
3.1.7
geoblanket (GBL)
permeable structure of loose natural and/or synthetic fibres and other elements (natural or synthetic)
bonded together to form a continuous sheet
3.1.8
geotextile (GTX)
planar, permeable, polymeric (synthetic or natural) textile material, which may be nonwoven, knitted
or woven, used in contact with soil and/or other materials in geotechnical and civil engineering
applications
3.1.9
geomat (GMA)
three-dimensional, permeable structure, made of polymeric monofilaments, and/or other elements
(synthetic or natural), mechanically and/or thermally and/or chemically and/or otherwise bonded
prEN 17097:2017 (E)
3.1.10
reinforced geomat (GMA-R)
geocomposite composed of a geomat and reinforcing elements like e.g. geogrid, yarns or steel meshes
3.1.11
Geocell (GCE)
three-dimensional, permeable, polymeric (synthetic or natural) honeycomb or similar cellular
structure, made of linked strips of geosynthetics
3.1.12
nominal width and length
for stretchable products that exhibit high lateral contraction e.g. GCE, knitted GMA the nominal width
and the nominal length of the product are the values declared by the supplier
3.2 Abbreviations
For the purposes of this document, the abbreviations given in EN ISO 1043-1 and EN ISO 10318-1 and
the following apply.
— GBL: geoblanket
— GCE: geocell
— GMA: geomat
— GMA-R: reinforced geomat
— GTX: geotextile
— PCM: post-consumer material
— PIM: post-industrial material
— RWM: rework material
— SEC: surface erosion control
4 Required characteristics and corresponding methods of test
4.1 General
The main function of geosynthetics used in surface erosion control on slopes and banks is surface
erosion control. If reinforcement is integrated in the construction, the requirements of the appropriate
standards shall also be fulfilled.
The specification shall define which conditions of use are relevant (see Table 1). The producer shall
provide the necessary data based on the requirements and test methods specified in this European
Standard, as described in 5.1.
The characteristics, their relevance to the conditions of use, and the test methods to be used, are
specified in Table 1. The list of characteristics in Table 1 includes, those relevant to all conditions of use
(A), and those relevant to specific conditions of use (S). The indication “–” means that the characteristic
is not relevant for that function.
Where, for the same property, data for more than one function shall be provided, the following ranking
order shall be observed: A overrules S, and S overrules “–”.
prEN 17097:2017 (E)
The functions and conditions of use, corresponding with the S-coded characteristics in Table 1, are
specified in 4.3.
Durability shall be assessed in accordance with the requirements of Annex A.
GTX
GMA-R
GMA
GBL
GTX
GMA-R
GCE
GMA
GBL
prEN 17097:2017 (E)
4.2 Selection of the appropriate standard in a specific application
Table 1 — Geosynthetics used in surface erosion control on slopes and banks –Test methods to be used
Filled in service / Not filled in service /
covered not covered
Characteristic Test method Remarks
(1) Thickness at 0,2 kPa Annex B A A – A A A A A A
(2) Height EN 1848–2 – – A – – – – – –
(3) Mass per unit area EN ISO 9864 A A – A A A A A A .
If the product is used for the function SEC
(4) Tensile strength EN ISO 10319 A A – A A A A A A only, a test speed of 100 mm/min shall be
used.
If the product is used for the function SEC
only, the tensile strain at maximum load
(5) Elongation at maximum load EN ISO 10319 A A – A A A A A A
shall be measured between the clamps and
reported.
(6) Strength of internal structural junctions All tests have to be carried out.
EN ISO 13426-1 – – A – – – – – –
of geocells
(7) Strength of internal structural junctions If a GMA is also a geocomposite consisting of
EN ISO 13426-2 S S – S – S S S –
of geocomposites different layers.
(8) Short-term compressive behaviour EN ISO 25619-2 S S – S S S S S S
(9) Rebound resilience Annex C S S – S S S S S S
Report bending length in the “as-rolled-out”
situation
following
(10) Flexibility A A – A A A A A A
ASTM D7748 The minimum specimen width is 200 mm.
MD and CMD shall be tested.
prEN 17097:2017 (E)
Where appropriate a compression test or a
tensile test at the relevant temperatures shall
be performed.
Tensile/compression strength at a given
(11) Behaviour at low and high temperatures Annex D S S S S S S S S S
temperature, retained
tensile/compression strength and strain
at maximum load (measured between
clamps) shall be reported.
The opening size is relevant for the
evaluation of the penetration of leafs (not
(12) Opening size Annex E A A – A A A A A A
filled in service) and rootlets (filled in
service) through the product.
(13) Turf-filling ratio Annex F – S – S – – – – –
The light transmission is relevant for the
evaluation of the product that the sunlight
(14) Light transmission ASTM D6567 – – – – – A A A A
can reach the in-light growing seeds through
the product.
(15) Water permeability normal to the plane EN ISO 11058 S – – – S S – – S
The water absorption is relevant for the
(16) Water absorption capacity evaluation of the product to absorb the
Annex G – – – – – A – – A
(method immersion) maximum moisture content after immersion
in water.
Covered: 50 MJ/m
(17) Resistance to weathering EN 12224 A A A A A A A A A
Uncovered: 350 MJ/m
The smoulder resistance is relevant for the
(18) Smoulder resistance Annex H A A A A A A A A A evaluation of the risk of a fire induced by a
cigarette.
(19) Microbiological resistance Except virgin PP, PE, PET, PA
EN 12225 A A A A A A A A A
(soil burial test)
(20) Root penetration CEN/TS 14416 S S – S S – – – – Products with opening size less than 1 mm
(21) Plant growth ASTM D7322 S S S S S S S S S Typical local seed mix may be used.
prEN 17097:2017 (E)
(22) Environmental harmlessness Annex I A A A A A A A A A
(23) Rain simulation prEN 00189238 S S S S S S S S S
(24) Channel simulation prEN 00189239 S S S S S S S S S
EN ISO 11925-2 Only surface exposure shall be applied.
(25) Fire resistance S S S S S S S S S
EN 13501–1
Relevance of codes:
A: relevant to all conditions of use; S: relevant to specific conditions of use; “–”: indicates that the characteristic is not relevant
For stretchable products, like knitted geomats with a “flexible” width the size of the specimen shall be related to the shape that the product has to
set to the nominal width as reported in the supplier data sheet. That could be valid for all the tests. Therefore the specimens have to be taken from
the opened product set to nominal width as reported in the supplier data sheet.
prEN 17097:2017 (E)
4.3 Characteristics relevant to specific conditions of use
4.3.1 Strength of internal structural junctions of geocomposites
Data on strength of internal structural junctions are necessary if the bonding of different layers of the
structure needs to be evaluated.
4.3.2 Short-term compressive behaviour
Data on short-term compressive strength are necessary if the maximum applicable load of the product
needs to be evaluated.
4.3.3 Rebound resilience
Data on rebound resilience are necessary to evaluate the ability of the product to recover to its original
thickness after loading.
4.3.4 Behaviour at low and high temperatures
Data on behaviour at low or high temperatures are required if the temperature could have an impact on
the usability of the geosynthetic.
4.3.5 Turf-filling ratio
Data on turf-filling ratio are necessary when the product shall be filled with soil.
4.3.6 Water permeability normal to the plane
Data on water permeability are necessary when the structure is subject to water flow.
4.3.7 Root penetration
Data on root penetration are necessary when the product shall be penetrated with roots to create an
interlocking between the product and the subsoil.
4.3.8 Plant growth
Data on plant growth are necessary to evaluate the vegetation growth in the structure of product and
soil.
4.3.9 Rain simulation
Data are required for applications under rain splash forces e.g. at slopes.
4.3.10 Channel simulation
Data are required for applications under hydraulic forces e.g. at river banks, channels or induced by
stormwater or flood events.
4.3.11 Fire resistance
Data are required for applications where the slopes can be subjected to fire.
5 Assessment and verification of constancy of performance (AVCP)
5.1 General
The compliance of geosynthetics for use in surface erosion control on slopes and banks with the
requirements of this standard and with the performances declared by the manufacturer in the DoP shall
be demonstrated by:
prEN 17097:2017 (E)
— determination of the product type;
— factory production control by the manufacturer, including product assessment.
The manufacturer shall always retain the overall control and shall have the necessary means to take
responsibility for the conformity of the product with its declared performance(s).
5.2 Type testing
5.2.1 General
All performances related to characteristics included in this standard shall be determined when the
manufacturer intends to declare the respective performances unless the standard gives provisions for
declaring them without performing tests. (e.g. use of previously existing data, CWFT and conventionally
accepted performance).
Assessment previously performed in accordance with the provisions of this standard, may be taken into
account provided that they were made to the same or a more rigorous test method, under the same
AVCP system on the same product or products of similar design, construction and functionality, such
that the results are applicable to the product in question.
NOTE Same AVCP system means testing by an independent third party [only for products covered by system
1+, 1 and 3], under the responsibility of a notified product certification body [only for products covered by system
1+ and 1].
For the purposes of assessment, the manufacturer's products may be grouped into families, where it is
considered that the results for one or more characteristics from any one product within the product
family are representative for that same characteristics for all products within that same family.
Products may be grouped in different families for different characteristics.
Reference to the assessment method standards should be made to allow the selection of a suitable
representative sample.
In addition, the determination of the product type shall be performed for all characteristics included in
the standard for which the manufacturer declares the performance:
— at the beginning of the production of a new or modified geosynthetics for use in surface erosion
control on slopes and banks (unless a member of the same product family); or
— at the beginning of a new or modified method of production (where this may affect the declared
properties); or
they shall be repeated for the appropriate characteristic(s), whenever a change occurs in geosynthetics
for use in surface erosion control on slopes and banks design, in the raw material or in the supplier of
the components, or in the method of production (subject to the definition of a product family), which
would affect significantly one or more of the characteristics.
Where components are used whose characteristics have already been determined, by the component
manufacturer, on the basis of assessment methods of other product standards, these characteristics
need not be re-assessed. The specifications of these components shall be documented.
Products bearing regulatory marking in accordance with appropriate harmonized European
specifications may be presumed to have the performances declared in the DoP, although this does not
replace the responsibility on geosynthetics for use in surface erosion control on slopes and banks
manufacturer to ensure that the geosynthetics for use in surface erosion control on slopes and banks as
a whole is correctly manufactured and its component products have the declared performance values.
prEN 17097:2017 (E)
5.2.2 Test samples, testing and compliance criteria
The number of samples of geosynthetics for use in surface erosion control on slopes and banks to be
tested/assessed shall be in accordance with Table 2.
Table 2 — Number of samples to be tested and compliance criteria
Number of
Requirement Assessment
Characteristic tests / Conformity criteria
clause method
samples
4.2, Table 1 According to 4.2,
Tensile strength 5 MD / 5 CMD Not defined
Table 1
Elongation at 4.2, Table1 According to 4.2,
5 MD / 5 CMD Not defined
maximum load Table 1
Tensile shear strength 4.2, Table 1
and peel strength of According to 4.2,
5 MD / 5 CMD Not defined
internal structural Table 1
junctions of geocells
4.2, Table 1 According to 4.2,
Flexibility 3 MD / 3 CMD Not defined
Table 1
4.2, Table1 According to 4.2,
Weathering resistance Table 1 and 5 MD / 5 CMD See Annex A
Annex A
4.2, Table 1 According to 4.2,
Microbiological
Table 1 and 5 MD / 5 CMD See Annex A
resistance
Annex A
According to 4.2,
Environmental
4.2, Table 1 Table 1 and 1 kg in weight See Annex A
harmlessness
Annex A
5.2.3 Test reports
The results of the determination of the product type shall be documented in test reports. All test reports
shall be retained by the manufacturer for at least 10 years after the last date of production of
geosynthetics for use in surface erosion control on slopes and banks to which they relate.
5.2.4 Shared other party results
A manufacturer may use the results of the product type determination (in consistency with this
standard) obtained by someone else (e.g. by another manufacturer, as a common service to
manufacturers, or by a product developer), to justify his own declaration of performance regarding a
product that is manufactured according to the same design (e.g. dimensions) and with raw materials,
constituents and manufacturing methods of the same kind, provided that:
— the results are known to be valid for products with the same essential characteristics relevant for
the product performance;
— in addition to any information essential for confirming that the product has such same
performances related to specific essential characteristics, the other party who has carried out the
)
determination of the product type concerned or has had it carried out, has expressly accepted to
1)
The formulation of such an agreement can be done by licence, contract, or any other type of written consent.
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transmit to the manufacturer the results and the test report to be used for the latter’s product type
determination, as well as information regarding production facilities and the production control
process that can be taken into account for FPC;
— the manufacturer using other party results accepts to remain responsible for the product having
the declared performances and he also:
- ensures that the product has the same characteristics relevant for performance as the one that
has been subjected to the determination of the product type, and that there are no significant
differences with regard to production facilities and the production control process compared
to that used for the product that was subjected to the determination of the product type; and
- keeps available a copy of the determination of the product type report that also contains the
information needed for verifying that the product is manufactured according to the same
design and with raw materials, constituents and manufacturing methods of the same kind.
5.2.5 Cascading determination of the product type results
For some construction products, there are companies (often called “system houses”) which supply or
)
ensure the supply of, on the basis of an agreement some or all of the components to an assembler
who then manufactures the finished product (referred to below as the “assembler”) in his factory.
Provided that the activities for which such a system house is legally established include
manufacturing/assembling of products as the assembled one, the system house may take the
responsibility for the determination of the product type regarding one or several essential
characteristics of an end product which is subsequently manufactured and/or assembled by other firms
in their own factory.
When doing so, the system house shall submit an “assembled product” using components manufactured
by it or by others, to the determination of the product type and then make the determination of the
product type report available to the assemblers, i.e. the actual manufacturer of the product placed on
the market.
To take into account such a situation, the concept of cascading determination of the product type might
be taken into consideration in the technical specification, provided that this concerns characteristics for
which either a notified product certification body or a notified test laboratory intervene, as presented
below.
The determination of the product type report that the system house has obtained with regard to tests
carried out by a notified body, and which is supplied to the assemblers, may be used for the regulatory
marking purposes without the assembler having to involve again a notified body to undertake the
determination of the product type of the essential characteristic(s) that were already tested, provided
that:
— the assembler manufactures a product which uses the same combination of components
(components with the same characteristics), and in the same way, as that for which the system
house has obtained the determination of the product type report. If this report is based on a
combination of components not representing the final product as to be placed on the market,
and/or is not assembled in accordance with the system house’s instruction for assembling the
components, the assembler needs to submit his finished product to the determination of the
product type;
2)
This can be, for instance, a contract, license or whatever kind of written agreement, which should also contain
clear provisions with regard to responsibility and liability of the component producer (system house, on the one
hand, and the assembler of the finished product, on the other hand.
prEN 17097:2017 (E)
— the system house has notified to the manufacturer the instructions for manufacturing/assembling
the product and installation guidance;
— the assembler (manufacturer) assumes the responsibility for the correct assembly of the product in
accordance with the instructions for manufacturing/assembling the product and installation
guidance notified to him by the system house;
— the instructions for manufacturing/assembling the product and installation guidance notified to the
assembler (manufacturer) by the system house are an integral part of the assembler’s Factory
Production Control system and are referred to in the determination of the product type report;
— the assembler is able to provide documented evidence that the combination of components he is
using, and his way of manufacturing, correspond to the one for which the system house has
obtained the determination of the product type report (he needs to keep a copy of the system
house’s determination of the product type report);
— regardless the possibility of referring, on the basis of the agreement signed with the system house,
to the latter’s responsibility and liability under private law, the assembler remains responsible for
the product being in compliance with the declared performances, including both the design and the
manufacture of the product, which is
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