Plastics piping systems for non-pressure underground conveyance and storage of non-potable water - Test method for determination of long-term compression strength of boxes

This document specifies a test method for determining the long-term compression strength for a specified period on structural boxes made of thermoplastics materials for non-pressure underground conveyance and storage of non-potable water.
The document is applicable for boxes which maintain their linear behaviour over the specified period.

Kunststoff-Rohrleitungssysteme für die drucklose unterirdische Entwässerung für Nicht-Trinkwasser - Prüfverfahren zur Bestimmung der Langzeitdruckfestigkeit von Versickerungsblöcken

Dieses Dokument legt ein Prüfverfahren zur Bestimmung der Langzeitdruckfestigkeit für eine festgelegte Dauer an baulichen Versickerungsblöcken aus thermoplastischen Werkstoffen für die drucklose unter¬irdische Entwässerung für Nicht-Trinkwasser fest.
Das Dokument gilt für Versickerungsblöcke, die ihr lineares Verhalten über die festgelegte Dauer bei-behalten.

Systèmes de canalisations en plastique pour le transport et le stockage souterrains sans pression de l’eau non potable - Méthode d’essai pour la détermination de la résistance à la compression à long terme des structures alvéolaires ultra-légères

Le présent document spécifie une méthode d’essai pour déterminer la résistance à la compression à long terme des SAUL structurelles fabriquées à partir de matières thermoplastiques pour le transport et le stockage souterrains sans pression de l’eau non potable.
Le présent document s’applique aux SAUL qui conservent leur comportement linéaire pendant la période spécifiée.

Cevni sistemi iz polimernih materialov, ki delujejo po težnostnem principu in so položeni v zemljo, za transport in shranjevanje vode, ki ni namenjena pitju - Preskusna metoda za ugotavljanje dolgotrajne tlačne odpornosti zabojev

Ta dokument določa preskusno metodo za ugotavljanje dolgotrajne tlačne odpornosti konstrukcijskih zabojev iz termoplastičnih materialov za določen čas, ki delujejo po težnostnem principu in so položeni v zemljo, za transport in shranjevanje vode, ki ni namenjena pitju.
Dokument se uporablja tudi za zaboje, ki v določenem obdobju ohranjajo svoje linearne lastnosti.

General Information

Status
Published
Public Enquiry End Date
19-Oct-2017
Publication Date
09-Sep-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
29-Aug-2019
Due Date
03-Nov-2019
Completion Date
10-Sep-2019

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SLOVENSKI STANDARD
SIST EN 17151:2019
01-oktober-2019
Cevni sistemi iz polimernih materialov, ki delujejo po težnostnem principu in so
položeni v zemljo, za transport in shranjevanje vode, ki ni namenjena pitju -
Preskusna metoda za ugotavljanje dolgotrajne tlačne odpornosti zabojev

Plastics piping systems for non-pressure underground conveyance and storage of non-

potable water - Test method for determination of long-term compression strength of

boxes

Kunststoff-Rohrleitungssysteme für die drucklose unterirdische Entwässerung für Nicht-

Trinkwasser - Prüfverfahren zur Bestimmung der Langzeitdruckfestigkeit von
Versickerungsblöcken

Systèmes de canalisations en plastique pour le transport et le stockage souterrains sans

pression de l’eau non potable - Méthode d’essai pour la détermination de la résistance à

la compression à long terme des structures alvéolaires ultra-légères
Ta slovenski standard je istoveten z: EN 17151:2019
ICS:
23.040.03 Cevovodi za zunanje sisteme Pipeline and its parts for
transporta vode in njihovi deli external water conveyance
systems
SIST EN 17151:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 17151:2019
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SIST EN 17151:2019
EN 17151
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2019
EUROPÄISCHE NORM
ICS 23.040.01
English Version
Plastics piping systems for non-pressure underground
conveyance and storage of non-potable water - Test
method for determination of long-term compression
strength of boxes

Systèmes de canalisations en plastique pour le Kunststoff-Rohrleitungssysteme für die drucklose

transport et le stockage souterrains sans pression de unterirdische Entwässerung für Nicht-Trinkwasser -

l'eau non potable - Méthode d'essai pour la Prüfverfahren zur Bestimmung der

détermination de la résistance à la compression à long Langzeitdruckfestigkeit von Versickerungsblöcken

terme des structures alvéolaires ultra-légères
This European Standard was approved by CEN on 19 October 2018.

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 CEN-CENELEC Management Centre 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 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17151:2019 E

worldwide for CEN national Members.
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SIST EN 17151:2019
EN 17151:2019 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

Introduction .................................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Symbols and units ........................................................................................................................................... 6

5 Test method ...................................................................................................................................................... 7

6 Apparatus ........................................................................................................................................................... 7

7 Test sample ....................................................................................................................................................... 8

7.1 General ................................................................................................................................................................ 8

7.2 Number ............................................................................................................................................................... 8

7.3 Age ........................................................................................................................................................................ 8

7.4 Conditioning ...................................................................................................................................................... 8

8 Procedures and calculations ....................................................................................................................... 8

8.1 Test method ...................................................................................................................................................... 8

8.2 Creep rupture test procedure ..................................................................................................................... 9

9 Test report ...................................................................................................................................................... 10

Annex A (informative) Test method for determining linear behaviour .................................................. 12

A.1 Principle .......................................................................................................................................................... 12

A.2 Procedure........................................................................................................................................................ 12

A.3 Calculations .................................................................................................................................................... 13

Annex B (normative) Procedure for fitting creep rupture data and determining the LCL

strength for a design life of 50 year ....................................................................................................... 14

B.1 Requirements ................................................................................................................................................ 14

B.2 Principles of the analysis ........................................................................................................................... 14

B.3 Analysis Method ........................................................................................................................................... 15

Bibliography ................................................................................................................................................................. 17

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SIST EN 17151:2019
EN 17151:2019 (E)
European foreword

This document (EN 17151:2019) has been prepared by Technical Committee CEN/TC 155 “Plastics

piping systems and ducting systems”, the secretariat of which is held by NEN.

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 February 2020, and conflicting national standards shall

be withdrawn at the latest by February 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,

Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,

Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North

Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United

Kingdom.
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SIST EN 17151:2019
EN 17151:2019 (E)
Introduction

This standard is intended to reflect the current state of knowledge of determining and predicting the

long-term lifetime of products mentioned in the scope while maintaining reasonable testing times for

producers and developers of these systems.

The products covered by this standard are part of storm water management systems.

CEN TC 155 is aware that these products are used in modular systems and that the long term compression

strength determined by this standard applies to a single box and might not reflect the maximum allowable

loads on an installed system.

Linearity is assumed to extrapolate the (log) load versus log time curve from the results of the creep

rupture tests. The test described in Annex A is intended to demonstrate linearity over the extrapolated

lifetime by testing at elevated temperatures.

This test is given as an informative annex due to limited practical experience and lack of reliability

analyses. CEN TC 155 wants to encourage stakeholders to perform these tests before the next revision.

NOTE Linear behaviour of the boxes can be assumed when the difference in the slope between creep tests

performed at 20 °C and at 70 °C as described in Annex A is small and therefore there has been no deviation from

linear behaviour.

The test method follows the principles of ISO 9080 [1] and applies them to the testing of boxes.

CEN TC 155 is aware that including a not failed data point at 4 380 h in the calculation of LCL would bias

the outcome in the lower 95 % confidence level (LCL) for the stress leading to a failure at 50 years.

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SIST EN 17151:2019
EN 17151:2019 (E)
1 Scope

This document specifies a test method for determining the long-term compression strength for a

specified period on boxes made of thermoplastics materials for non-pressure underground conveyance

and storage of non-potable water.

The document is applicable for boxes which maintain their linear behaviour over the specified period.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

EN ISO 3126, Plastics piping systems — Plastics components — Determination of dimensions (ISO 3126)

EN ISO 7500-1:2018, Metallic materials — Calibration and verification of static uniaxial testing machines

— Part 1: Tension/compression testing machines — Calibration and verification of the force-measuring

system (ISO 7500-1:2018)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
box

thermoplastic cuboid shaped element, with or without sidewalls, used to create a modular storage system

3.2
integral component
load bearing component contributing to the overall strength of the box
3.3
initial height, length, width
h , l , b
i i i

respectively height (test direction), length and width of the sample before testing, in mm

3.4
initial height after pre-load

height of the sample after applying a pre-load, but before the load is further increased and recorded, in

3.5
long-term compression strength

95 % lower confidence limit of the applied stress for which the sample would survive 50y without creep

rupture, in kN/m
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SIST EN 17151:2019
EN 17151:2019 (E)
3.6
linear behaviour

products that exhibit linear behaviour are defined as those that exhibit a linear relationship of stress

versus log-time or log-stress versus log-time to creep rupture throughout the recorded and extrapolated

lifetime
3.7
test duration periods (TDP1, TDP2)

specifies the duration of a series of creep rupture tests failing in a specific period of time

4 Symbols and units
For the purposes of this document, the following symbols and units apply.
Units
h initial height mm
l initial length mm
b initial width mm
h initial height after pre-load mm
σ failure stress, long-term kN/m
σ failure stress, short-term kN/m
σ short-term compression strength kN/m
max
σ long-term compression strength kN/m
t time when the test load is applied s
t failure time, short-term s
tfs failure time, long-term s
a, b constants for fitting a straight line -
y, x variables for fitting a straight line -
t time s
σ applied stress kN/m
T elevated test temperature °C
y , x data pair for fitting a straight line number i -
i i
t , σ data pair of time and stress number i -
i i
N number of data pairs -
u(a), u(b) the standard uncertainties in the fit intercept, -
u(a), the fit gradient, u(b)
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SIST EN 17151:2019
EN 17151:2019 (E)
5 Test method

Creep rupture tests are performed at different load levels and the time until rupture is measured. The

load levels are selected to distribute the ruptures evenly over log-time.

The creep rupture tests are carried out by testing a series of samples placed between two stiff plates with

different constant compression loads applied. Deflection is recorded against time. The different times

taken for creep rupture to occur are used to plot a trend line which, when extrapolated, can be used to

predict the stress at which creep rupture will occur at a specific time in the future.

The uncertainty of the extrapolated value is determined to enable the definition of a lower limit at a

specified confidence level.

NOTE Creep rupture tests give information on a change of strain at failure with time to rupture.

6 Apparatus

6.1 Compression testing apparatus, which shall be capable of applying a constant load via stiff plates.

The load may be applied either directly or indirectly, e.g. by use of a lever arm arrangement. The load

shall be applied perpendicular (90° ± 1°) on the bottom plate.

If the force is applied by a force multiplication device, the resultant load applied to the sample shall be

validated using an appropriate load cell that has been calibrated according to EN ISO 7500-1:2018 class

6.2 A pair of parallel plates.

Where the compression load can be applied to the test sample, the plates shall be flat, smooth and clean

and shall not deform during the test to an extent that would affect the results. The out of plane

deformation of the plates shall be less than 1,0 mm for the loads applied. The upper plate shall be fixed

(plate type 1) or shall have the capability to rotate around one or both horizontal axes (plate type 2). If a

test sample has integral protrusions, it is allowed to use an additional loose flat plate with recesses as a

load distribution layer to secure acceptable contact between the surface of the test sample and the plate

of the testing machine or remove the integral protrusions.

The length and the width of each plate shall be greater than the length and width of the test sample.

6.3 Timer, which shall be capable of continuously measuring and recording the testing time with an

accuracy of 1 min.
6.4 Dimensional
...

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