BS EN 01446-1996
Content
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
BRITISH STANDARD
Plastics piping and ducting
systems Ð
Thermoplastics pipes Ð
Determination of ring
flexibility
The European Standard EN 1446 : 1996 has the status of a
British Standard
ICS 23.040.20
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
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BS EN
1446 : 1996
BS 2782 :
Part 11 :
Method 1114C :
1996
BS EN 1446 : 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Committees responsible for this
British Standard
The preparation of this British Standard was entrusted to Technical Committee
PRI/61, Plastics piping systems and components, upon which the following bodies
were represented:
British Gas plc
British Plastics Federation
British Plumbing Fittings Manufacturers' Association
British Valve and Actuator Manufacturers' Association
Department of the Environment (British Board of AgreÂment)
Department of the Environment (Building Research Establishment)
Department of the Environment (Property and Buildings Directorate)
Department of Transport
Electricity Association
Federation of Civil Engineering Contractors
Health and Safety Executive
Institute of Building Control
Institute of Materials
Institution of Civil Engineers
Institution of Gas Engineers
Institution of Water and Environmental Management
National Association of Plumbing, Heating and Mechanical Services Contractors
Pipeline Industries Guild
Plastics Land Drainage Manufacturers' Association
Society of British Gas Industries
Society of British Water Industries
Water Companies Association
Water Services Association of England and Wales
The following bodies were also represented in the drafting of the standard, through
subcommittees and panels:
This British Standard, having
been prepared under the
direction of the Sector Board for
Materials and Chemicals, was
published under the authority of
the Standards Board and comes
into effect on
15 August 1996
BSI 1996
ERA Technology Ltd.
Engineering Equipment and Materials Users' Association
RAPRA Technology Ltd.
Amendments issued since publication
Amd. No.
The following BSI references
relate to the work on this
standard:
Committee reference PRI/61
Draft for comment 94/341021 DC
ISBN 0 580 25843 2
Date
Text affected
BS EN 1446 : 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Contents
Committees responsible
National foreword
Foreword
Method
1
Scope
2
Normative references
3
Principle
4
Apparatus
5
Test pieces
6
Condtioning
7
Procedure
8
Test report
Page
Inside front cover
ii
2
3
3
3
3
3
3
3
3
i
BS EN 1446 : 1996
National foreword
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
This British Standard has been prepared by Technical Committee PRI/61 and is the
English language version of EN 1446 : 1996 Plastics piping and ducting systems ±
Thermoplastics pipes ± Determination of ring flexibility, published by the European
Committee for Standardization (CEN).
It is incorporated into BS 2782 Methods of testing plastics : Part 11 : Thermoplastics
pipes, fittings and valves, as Method 1114C : 1996, for association with related test
methods for plastics materials and plastics piping components.
This test method has been prepared for reference by other standards under
preparation by CEN for specification of reinforced plastics piping systems and
components. It has been implemented to enable experience of the method to be gained
and for use for other fresh applications.
It is also for use for the revision or amendment of other national standards as
practicable, but it should not be presumed to apply to any existing standard or
specification which contains or makes reference to a different test method until that
standard/specification has been amended or revised to make reference to this method
and adjust any requirements as appropriate.
Cross-reference
Publication referred to
Corresponding British Standard
EN ISO 9969 : 1995
BS EN ISO 9969 : 1995
(BS 2782 : Part 11 : Method 1114B : 1995)
Thermoplastics pipes ± Determination of ring stiffness
Warning note. This British Standard, which is identical with EN 1446 : 1996, does not
necessarily detail all the precautions necessary to meet the requirements of the Health
and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety
precautions and the method should be operated only by trained personnel.
Compliance with a British Standard does not of itself confer immunity
from legal obligations.
ii
EN 1446
EUROPEAN STANDARD
NORME EUROPEÂENNE
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
EUROPAÈISCHE NORM
January 1996
ICS 23.040.20
Descriptors: Plastic tubes, thermoplastic resins, tests, bend tests, determination, flexibility
English version
Plastics piping and ducting systems Ð
Thermoplastics pipes Ð
Determination of ring flexibility
SysteÁmes de canalisations et de gaines en
plastiques Ð Tubes thermoplastiques Ð
DeÂtermination d'essai de la flexibilite annulaire
Kunststoff-Rohrleitungs- und Schutzrohrsysteme Ð
Rohre aus Thermoplasten Ð Bestimmung der
RingflexibilitaÈt
This European Standard was approved by CEN on 1996-01-04. 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.
Up-to-date lists and bibliographical references concerning such national standards
may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists 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 Central Secretariat has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CEN
European Committee for Standardization
Comite EuropeÂen de Normalisation
EuropaÈisches Komitee fuÈr Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
1996 Copyright reserved to CEN members
Ref. No. EN 1446 : 1996 E
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Page 2
EN 1446 : 1996
Foreword
This European Standard has been prepared by the
Technical Committee CEN/TC 155, Plastics piping
systems and ducting systems, of which the secretariat
is held by NNI.
This draft standard is based on clause 6 of the latest
version of the draft for the international standard
ISO/DIS 9971-1 Light weight pipes and fittings of
unplasticized polyvinyl chloride (PVC-U) for buried
drain and sewer Ð Specifications prepared by the
International Organization for Standardization (ISO). It
is a modification of clause 6 for reasons of the need
for a separate supporting standard.
The material-dependent parameters and/or
performance requirements are incorporated in the
System Standard(s) concerned.
This standard is one of a series of standards on test
methods which support System Standards for plastics
piping systems and ducting systems.
This European Standard shall be given the status of a
national standard, either by publication of an identical
text or by endorsement, at the latest by July 1996, and
conflicting national standards shall be withdrawn at
the latest by July 1996.
According to the CEN/CENELEC Internal Regulations,
the following countries are bound to implement this
European Standard: Austria, Belgium, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland,
Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland, United Kingdom.
BSI 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Page 3
EN 1446 : 1996
1 Scope
7 Procedure
This standard specifies a method for testing the ring
flexibility of a thermoplastics pipe having a circular
cross section.
The method enables determination of the deflection,
and necessary force, at which physical damage, if any
(see 7.2), occurs within 30 % diametric deflection.
7.1 Conduct the test in accordance with the
procedure given in EN ISO 9969, but continue
compression while measuring the change in either
inside diameter or outside diameter and monitoring for
signs of failure (see 7.2), until either a deflection of at
least 30 % in outside diameter has been reached or the
test piece has fractured, whichever occurs first.
2 Normative references
7.2 Observe and record the force and the deflection
at the first evidence of each of the following
mechanical failures, if they occur:
a) cracking or crazing of the inside wall or liner;
b) wall cracking;
c) wall delamination;
d) rupture of the test piece;
e) change in direction of curvature of the cross
section of the test piece (buckling).
Whitening of the pipe shall not be considered as an
indication of one of the above mentioned mechanical
failures.
This standard incorporates by dated or undated
reference, provisions from other publications. These
normative references are cited at the appropriate
places in the text and the publications are listed
hereafter. For dated references, subsequent
amendments to or revisions of any of these
publications apply to this standard only when
incorporated in it by amendment or revision. For
undated references the latest edition of the publication
referred to applies.
EN ISO 9969 : 1995 Thermoplastics pipes Ð
Determination of ring stiffness
3 Principle
The ring flexibility of a pipe is tested by measuring the
force and the deflection while deflecting a ring section
from the pipe diametrically at a constant speed until a
deflection of at least 30 % is achieved or prior fracture
has occurred.
Each test piece is monitored during testing and
subsequently inspected for signs of several specific
types of mechanical failure.
4 Apparatus
4.1 Compression testing machine conforming to that
required for EN ISO 9969 but capable of producing at
least 30 % diametric deflection of the test piece at the
applicable speed (see table 1 of EN ISO 9969 : 1995).
4.2 Dimensional and force measuring devices,
conforming to those required for EN ISO 9969, but
capable of measuring diametric deflections up to at
least 30 % and the relevant diameters and compressive
forces.
5 Test pieces
Three test pieces shall be prepared from a single pipe,
as specified in EN ISO 9969, and designated a, b and c
respectively.
6 Conditioning
Conditioning shall be as specified in EN ISO 9969.
BSI 1996
7.3 For each test piece, prepare a force/deflection
graph and inspect and record the type and the position
of each event (see 7.2) with respect to the
corresponding force and deflection.
8 Test report
The test report shall include the following information:
a) a reference to this standard and to the referring
standard;
b) a complete identification of the thermoplastics
pipe, including:
1) manufacturer;
2) type of pipe;
3) dimensions;
4) production date;
5) lengths of test pieces;
6) mass per metre length of the pipe;
c) the test temperature;
d) the force/deflection graph for each test piece;
e) the force and deflection at which any of the
following events occurred:
1) cracking or crazing of the inside wall or liner;
2) wall cracking;
3) wall delamination;
4) rupture of the test piece;
5) change in direction of curvature of the cross
section of the test piece (buckling);
f) the deflection and force at the maximum point, if
a maximum occurred;
g) any factors which may have affected the results,
such as any incidents or any operating details not
specified in this standard;
h) the date of test.
4
blank
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
BS EN 1446 : 1996
List of references
See national foreword.
BSI 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
BSI
389 Chiswick High Road
London
W4 4AL
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BSI Ð British Standards Institution
BSI is the independent national body responsible for preparing British Standards. It
presents the UK view on standards in Europe and at the international level. It is
incorporated by Royal Charter.
Revisions
British Standards are updated by amendment or revision. Users of British Standards
should make sure that they possess the latest amendments or editions.
It is the constant aim of BSI to improve the quality of our products and services. We
would be grateful if anyone finding an inaccuracy or ambiguity while using this
British Standard would inform the Secretary of the technical committee responsible,
the identity of which can be found on the inside front cover. Tel: 020 8996 9000.
Fax: 020 8996 7400.
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stored in a retrieval system or transmitted in any form or by any means ± electronic,
photocopying, recording or otherwise ± without prior written permission from BSI.
This does not preclude the free use, in the course of implementing the standard, of
necessary details such as symbols, and size, type or grade designations. If these
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written permission of BSI must be obtained.
If permission is granted, the terms may include royalty payments or a licensing
agreement. Details and advice can be obtained from the Copyright Manager.
Tel: 020 8996 7070.
BRITISH STANDARD
Plastics piping and ducting
systems Ð
Thermoplastics pipes Ð
Determination of ring
flexibility
The European Standard EN 1446 : 1996 has the status of a
British Standard
ICS 23.040.20
NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW
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BS EN
1446 : 1996
BS 2782 :
Part 11 :
Method 1114C :
1996
BS EN 1446 : 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Committees responsible for this
British Standard
The preparation of this British Standard was entrusted to Technical Committee
PRI/61, Plastics piping systems and components, upon which the following bodies
were represented:
British Gas plc
British Plastics Federation
British Plumbing Fittings Manufacturers' Association
British Valve and Actuator Manufacturers' Association
Department of the Environment (British Board of AgreÂment)
Department of the Environment (Building Research Establishment)
Department of the Environment (Property and Buildings Directorate)
Department of Transport
Electricity Association
Federation of Civil Engineering Contractors
Health and Safety Executive
Institute of Building Control
Institute of Materials
Institution of Civil Engineers
Institution of Gas Engineers
Institution of Water and Environmental Management
National Association of Plumbing, Heating and Mechanical Services Contractors
Pipeline Industries Guild
Plastics Land Drainage Manufacturers' Association
Society of British Gas Industries
Society of British Water Industries
Water Companies Association
Water Services Association of England and Wales
The following bodies were also represented in the drafting of the standard, through
subcommittees and panels:
This British Standard, having
been prepared under the
direction of the Sector Board for
Materials and Chemicals, was
published under the authority of
the Standards Board and comes
into effect on
15 August 1996
BSI 1996
ERA Technology Ltd.
Engineering Equipment and Materials Users' Association
RAPRA Technology Ltd.
Amendments issued since publication
Amd. No.
The following BSI references
relate to the work on this
standard:
Committee reference PRI/61
Draft for comment 94/341021 DC
ISBN 0 580 25843 2
Date
Text affected
BS EN 1446 : 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Contents
Committees responsible
National foreword
Foreword
Method
1
Scope
2
Normative references
3
Principle
4
Apparatus
5
Test pieces
6
Condtioning
7
Procedure
8
Test report
Page
Inside front cover
ii
2
3
3
3
3
3
3
3
3
i
BS EN 1446 : 1996
National foreword
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
This British Standard has been prepared by Technical Committee PRI/61 and is the
English language version of EN 1446 : 1996 Plastics piping and ducting systems ±
Thermoplastics pipes ± Determination of ring flexibility, published by the European
Committee for Standardization (CEN).
It is incorporated into BS 2782 Methods of testing plastics : Part 11 : Thermoplastics
pipes, fittings and valves, as Method 1114C : 1996, for association with related test
methods for plastics materials and plastics piping components.
This test method has been prepared for reference by other standards under
preparation by CEN for specification of reinforced plastics piping systems and
components. It has been implemented to enable experience of the method to be gained
and for use for other fresh applications.
It is also for use for the revision or amendment of other national standards as
practicable, but it should not be presumed to apply to any existing standard or
specification which contains or makes reference to a different test method until that
standard/specification has been amended or revised to make reference to this method
and adjust any requirements as appropriate.
Cross-reference
Publication referred to
Corresponding British Standard
EN ISO 9969 : 1995
BS EN ISO 9969 : 1995
(BS 2782 : Part 11 : Method 1114B : 1995)
Thermoplastics pipes ± Determination of ring stiffness
Warning note. This British Standard, which is identical with EN 1446 : 1996, does not
necessarily detail all the precautions necessary to meet the requirements of the Health
and Safety at Work etc. Act 1974. Attention should be paid to any appropriate safety
precautions and the method should be operated only by trained personnel.
Compliance with a British Standard does not of itself confer immunity
from legal obligations.
ii
EN 1446
EUROPEAN STANDARD
NORME EUROPEÂENNE
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
EUROPAÈISCHE NORM
January 1996
ICS 23.040.20
Descriptors: Plastic tubes, thermoplastic resins, tests, bend tests, determination, flexibility
English version
Plastics piping and ducting systems Ð
Thermoplastics pipes Ð
Determination of ring flexibility
SysteÁmes de canalisations et de gaines en
plastiques Ð Tubes thermoplastiques Ð
DeÂtermination d'essai de la flexibilite annulaire
Kunststoff-Rohrleitungs- und Schutzrohrsysteme Ð
Rohre aus Thermoplasten Ð Bestimmung der
RingflexibilitaÈt
This European Standard was approved by CEN on 1996-01-04. 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.
Up-to-date lists and bibliographical references concerning such national standards
may be obtained on application to the Central Secretariat or to any CEN member.
This European Standard exists 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 Central Secretariat has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.
CEN
European Committee for Standardization
Comite EuropeÂen de Normalisation
EuropaÈisches Komitee fuÈr Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
1996 Copyright reserved to CEN members
Ref. No. EN 1446 : 1996 E
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Page 2
EN 1446 : 1996
Foreword
This European Standard has been prepared by the
Technical Committee CEN/TC 155, Plastics piping
systems and ducting systems, of which the secretariat
is held by NNI.
This draft standard is based on clause 6 of the latest
version of the draft for the international standard
ISO/DIS 9971-1 Light weight pipes and fittings of
unplasticized polyvinyl chloride (PVC-U) for buried
drain and sewer Ð Specifications prepared by the
International Organization for Standardization (ISO). It
is a modification of clause 6 for reasons of the need
for a separate supporting standard.
The material-dependent parameters and/or
performance requirements are incorporated in the
System Standard(s) concerned.
This standard is one of a series of standards on test
methods which support System Standards for plastics
piping systems and ducting systems.
This European Standard shall be given the status of a
national standard, either by publication of an identical
text or by endorsement, at the latest by July 1996, and
conflicting national standards shall be withdrawn at
the latest by July 1996.
According to the CEN/CENELEC Internal Regulations,
the following countries are bound to implement this
European Standard: Austria, Belgium, Denmark,
Finland, France, Germany, Greece, Iceland, Ireland,
Italy, Luxembourg, Netherlands, Norway, Portugal,
Spain, Sweden, Switzerland, United Kingdom.
BSI 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Page 3
EN 1446 : 1996
1 Scope
7 Procedure
This standard specifies a method for testing the ring
flexibility of a thermoplastics pipe having a circular
cross section.
The method enables determination of the deflection,
and necessary force, at which physical damage, if any
(see 7.2), occurs within 30 % diametric deflection.
7.1 Conduct the test in accordance with the
procedure given in EN ISO 9969, but continue
compression while measuring the change in either
inside diameter or outside diameter and monitoring for
signs of failure (see 7.2), until either a deflection of at
least 30 % in outside diameter has been reached or the
test piece has fractured, whichever occurs first.
2 Normative references
7.2 Observe and record the force and the deflection
at the first evidence of each of the following
mechanical failures, if they occur:
a) cracking or crazing of the inside wall or liner;
b) wall cracking;
c) wall delamination;
d) rupture of the test piece;
e) change in direction of curvature of the cross
section of the test piece (buckling).
Whitening of the pipe shall not be considered as an
indication of one of the above mentioned mechanical
failures.
This standard incorporates by dated or undated
reference, provisions from other publications. These
normative references are cited at the appropriate
places in the text and the publications are listed
hereafter. For dated references, subsequent
amendments to or revisions of any of these
publications apply to this standard only when
incorporated in it by amendment or revision. For
undated references the latest edition of the publication
referred to applies.
EN ISO 9969 : 1995 Thermoplastics pipes Ð
Determination of ring stiffness
3 Principle
The ring flexibility of a pipe is tested by measuring the
force and the deflection while deflecting a ring section
from the pipe diametrically at a constant speed until a
deflection of at least 30 % is achieved or prior fracture
has occurred.
Each test piece is monitored during testing and
subsequently inspected for signs of several specific
types of mechanical failure.
4 Apparatus
4.1 Compression testing machine conforming to that
required for EN ISO 9969 but capable of producing at
least 30 % diametric deflection of the test piece at the
applicable speed (see table 1 of EN ISO 9969 : 1995).
4.2 Dimensional and force measuring devices,
conforming to those required for EN ISO 9969, but
capable of measuring diametric deflections up to at
least 30 % and the relevant diameters and compressive
forces.
5 Test pieces
Three test pieces shall be prepared from a single pipe,
as specified in EN ISO 9969, and designated a, b and c
respectively.
6 Conditioning
Conditioning shall be as specified in EN ISO 9969.
BSI 1996
7.3 For each test piece, prepare a force/deflection
graph and inspect and record the type and the position
of each event (see 7.2) with respect to the
corresponding force and deflection.
8 Test report
The test report shall include the following information:
a) a reference to this standard and to the referring
standard;
b) a complete identification of the thermoplastics
pipe, including:
1) manufacturer;
2) type of pipe;
3) dimensions;
4) production date;
5) lengths of test pieces;
6) mass per metre length of the pipe;
c) the test temperature;
d) the force/deflection graph for each test piece;
e) the force and deflection at which any of the
following events occurred:
1) cracking or crazing of the inside wall or liner;
2) wall cracking;
3) wall delamination;
4) rupture of the test piece;
5) change in direction of curvature of the cross
section of the test piece (buckling);
f) the deflection and force at the maximum point, if
a maximum occurred;
g) any factors which may have affected the results,
such as any incidents or any operating details not
specified in this standard;
h) the date of test.
4
blank
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
BS EN 1446 : 1996
List of references
See national foreword.
BSI 1996
Licensed Copy: sheffieldun sheffieldun, na, Tue Oct 31 01:45:24 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
BSI
389 Chiswick High Road
London
W4 4AL
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