SIST EN 295-1:2013

SLOVENSKI STANDARD
01-julij-2013
1DGRPHãþD
SIST EN 295-1:1996
SIST EN 295-1:1996/A1:1998
SIST EN 295-1:1996/A2:1998
SIST EN 295-1:1996/A3:2000
SIST EN 295-10:2005
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Vitrified clay pipe systems for drains and sewers - Part 1: Requirements for pipes, fittings
and joints
Steinzeugrohrsysteme für Abwasserleitungen und -känale - Teil 1: Anforderungen an
Rohre, Formstücke und Verbindungen
Systèmes de tuyaux et accessoires en grès pour les réseaux de branchement et
d’assainissement - Partie 1: Exigences pour tuyaux, accessoires et assemblages
Ta slovenski standard je istoveten z: EN 295-1:2013
ICS:
23.040.50 Cevi in fitingi iz drugih Pipes and fittings of other
materialov materials
91.140.80 Drenažni sistemi Drainage systems
93.030 Zunanji sistemi za odpadno External sewage systems
vodo
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 295-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2013
ICS 93.030 Supersedes EN 295-1:1991, EN 295-10:2005
English Version
Vitrified clay pipe systems for drains and sewers - Part 1:
Requirements for pipes, fittings and joints
Systèmes de tuyaux et accessoires en grès pour les Steinzeugrohrsysteme für Abwasserleitungen und -känale -
réseaux de branchement et d'assainissement - Partie 1: Teil 1: Anforderungen an Rohre, Formstücke und
Exigences pour tuyaux, accessoires et assemblages Verbindungen
This European Standard was approved by CEN on 1 December 2012.

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, 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.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2013 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 295-1:2013: E
worldwide for CEN national Members.

Contents Page
Foreword . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols and abbreviations . 7
4.1 Symbols . 7
4.2 Abbreviations . 7
5 Requirements for pipes and fittings . 8
5.1 Materials, manufacture, water absorption and appearance . 8
5.2 Internal diameter . 8
5.3 Length . 9
5.4 Squareness of ends . 9
5.5 Deviation from straightness . 9
5.6 Water seal of trapped fittings . 9
5.7 Angle of curvature and radius of bends . 10
5.8 Branch angle of junctions . 10
5.9 Crushing strength (F ) . 10
N
5.10 Bending tensile strength. 12
5.11 Bending moment resistance (BMR). 12
5.12 Bond strength of adhesive used for fixing fired clay parts together . 12
5.13 Fatigue strength under cyclic load . 13
5.14 Watertightness of pipes and junctions . 13
5.15 Chemical resistance . 13
5.16 Hydraulic roughness . 13
5.17 Abrasion resistance . 13
5.18 Airtightness . 13
5.19 Tightness of fittings . 14
5.20 Resistance against high pressure water jetting . 14
6 Requirements for joints and joint assemblies . 15
6.1 Joint materials . 15
6.2 Watertightness of joint assemblies under deflection and shear load . 16
6.3 Continuity of invert in joint assemblies . 17
6.4 Joint interchangeability of pipes and fittings in joint assemblies . 17
6.5 Chemical and physical resistance to effluent of joint assemblies . 19
6.6 Thermal cycling stability of joint assemblies . 20
6.7 Long-term thermal stability of joint assemblies . 20
7 Common requirements for pipes, fittings and joints . 20
7.1 Reaction to fire . 20
7.2 Durability . 20
7.3 Dangerous substances . 21
8 Designation . 21
9 Marking . 21
9.1 Pipes and fittings . 21
9.2 Joints . 22
10 Evaluation of conformity. 22
10.1 General . 22
10.2 Initial type testing . 22
10.3 Factory production control (FPC) .2 2
Annex A (normative) Requirements for vitrified clay fittings .2 3
Annex B (informative) Guidance on design, installation and operation of sewers and drains
constructed from vitrified clay pipes .2 4
B.1 General .2 4
B.2 Hydraulic design .2 4
B.3 Structural design .2 4
B.4 Installation .2 4
B.5 Operation and maintenance .2 4
B.6 Economy .2 5
B.7 Environmental characteristics .2 5
Annex ZA (informative) Clauses of this European Standard addressing the provisions of the EU
Construction Products Directive .2 6
ZA.1 Scope and relevant characteristics .2 6
ZA.2 Procedures for the attestation of conformity of vitrified clay pipes, fittings and pipe joints . 28
ZA.3 CE marking .2 9
Bibliography .3 4

Foreword
This document (EN 295-1:2013) has been prepared by Technical Committee CEN/TC 165 “Wastewater
engineering”, the secretariat of which is held by DIN.
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 August 2013, and conflicting national standards shall be withdrawn at
the latest by August 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 295-1:1991 and together with EN 295-2:2013, EN 295-4:2013,
EN 295-5:2013, EN 295-6:2013 and EN 295-7:2013 it supersedes EN 295-10:2005.
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 relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
The main changes with respect to the previous edition are listed below:
a) new dimensions included in Table 13 and Table 14 and dimensions for products no longer manufactured
deleted;
b) requirements for the resistance to high pressure water jetting added;
c) requirements for water absorption added;
d) reaction to fire added;
e) Annex ZA added;
f) editorially revised.
The standard series EN 295 "Vitrified clay pipe systems for drains and sewers" consists of the following parts:
 Part 1: Requirements for pipes, fittings and joints (the present document)
 Part 2: Evaluation of conformity and sampling
 Part 3: Test methods
 Part 4: Requirements for adaptors, connectors and flexible couplings
 Part 5: Requirements for perforated pipes and fittings
 Part 6: Requirements for components of manholes and inspection chambers
 Part 7: Requirements for pipes and joints for pipe jacking
Guidance on design, installation and operation of sewers and drains constructed from vitrified clay pipes is
given in EN 295-1:2013, Annex B.
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, 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 the United Kingdom.
1 Scope
This European Standard specifies requirements for vitrified clay pipes, fittings and flexible joints for buried
drain and sewer systems for the conveyance of wastewater (including domestic wastewater, surface water
and rainwater) under gravity and periodic hydraulic surcharge or under continuous low head of pressure.
This standard also specifies requirements for rubber, polyurethane and polypropylene materials and other
components used for jointing clay pipes and fittings.
This standard specifies different strength classes, systems of joint dimensions, lengths and fittings.
NOTE 1 The specifiers/purchasers can select them according to their requirements.
This standard does not apply to special fittings, adaptors and compatible accessories, perforated pipes and
fittings, manholes and inspection chambers and pipes and joints for pipe jacking, which are specified in other
parts of the standard series EN 295.
NOTE 2 Corresponding provisions for the evaluation of conformity (ITT and FPC) and sampling and those for the test
methods are further specified in EN 295-2 and EN 295-3, respectively.
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.
EN 295-2:2013, Vitrified clay pipe systems for drains and sewers — Part 2: Evaluation of conformity and
sampling
EN 295-3:2012, Vitrified clay pipe systems for drains and sewers — Part 3: Test methods
EN 681-1, Elastomeric seals — Material requirements for pipe joint seals used in water and drainage
applications — Part 1: Vulcanized rubber
EN 681-4, Elastomeric seals — Material requirements for pipe joint seals used in water and drainage
applications — Part 4: Cast polyurethane sealing elements
EN 1610:1997, Construction and testing of drains and sewers
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
nominal size
DN
numerical designation of size which is a convenient round number equal to or approximately equal to the
internal diameter in millimetres
3.2
curvature
angle subtended by the length of a curved fitting at the centre of a circle of nominal radius through the
centreline of the fitting
3.3
joint assembly
adjacent ends of pipes, fittings or adaptors and the means of joining them
3.4
joint system
dimensions of a joint related to spigot or socket
Note 1 to entry: Joint systems C, D and I are related to internal diameters of sockets, and joint systems E to H are
related to the spigot outside diameters.
3.5
sealing element
factory made component which seals the joint
3.6
fairing
any component located within a joint to reduce dimensional tolerances of sealing surfaces
3.7
minimum internal diameter
smallest internal diameter measured within 100 mm of the ends of the pipe
3.8
pipe section
short length of pipe barrel equal to or greater than 300 mm
3.9
nominal length
numerical designation of length approximately equal to the internal length of the pipe barrel
4 Symbols and abbreviations
4.1 Symbols
F  crushing strength, in kN/m
N
F  shear load, in kN
S
d spigot outside diameter, in mm
d  internal diameter of socket or fairing, in mm
p initial air pressure, in kPa

∆p pressure drop, in kPa
W water addition needed to maintain watertightness test pressure, in l/m
4.2 Abbreviations
BMR bending moment resistance
CWT classified without the need for testing
5 Requirements for pipes and fittings
5.1 Materials, manufacture, water absorption and appearance
5.1.1 Materials
Pipes and fittings shall be made from suitable natural clays to enable the pipe body to be fired to vitrification
that is with a glass matrix, so that the final product is in accordance with this standard.
5.1.2 Manufacture
Pipes and fittings shall be sound and shall be free from such defects as would impair their function when in
service.
NOTE Pipes and fittings are regarded as rigid (stiff) and the joints as flexible; all have high corrosion resistance.
Fittings may be completed by fixing fired parts together. Products may be surface treated after firing.
Applicable dimensional and performance requirements for fittings shall be as specified in Annex A.
5.1.3 Water absorption
Pipes and fittings shall have a water absorption value of less than 6 % when tested in accordance with
EN 295-3:2012, Clause 28.
5.1.4 Appearance
Pipes and fittings can be unglazed or glazed on the interior and/or exterior. When glazed they need not be
glazed on the jointing surfaces of the spigot and/or socket.
Visual imperfections, such as missing glaze, unevenness, creasings in the transition from pipe to socket and
slight surface damage are acceptable, providing the impermeability, durability and flow characteristics of the
pipes and fittings are unaffected.
5.2 Internal diameter
The internal diameter shall not be less than the values given in Table 1.
Table 1 — Internal diameter
Nominal size Minimum internal Nominal size Minimum internal
diameter diameter
DN DN
mm mm
100 96 450 439
125 121 500 487
150 146 600 585
200 195 700 682
225 219 800 780
250 244 900 878
300 293 1 000 975
350 341 1 200 1 170
400 390 1 400 1 365
Other nominal sizes can be manufactured to comply with this standard, providing that the minimum internal
diameter shall be not less than 97,5 % of the nominal size, rounded to the nearest whole millimetre.
5.3 Length
The preferred nominal lengths of pipes of DN 200 and greater shall be either in accordance with Table 2 or in
whole multiples of 0,25 m. There are no preferred nominal lengths for DN 100, DN 125 and DN 150 pipes or
straight fittings.
Table 2 — Preferred nominal lengths
Nominal size Preferred nominal lengths
DN m
200 1,5 – 2,0 2,5 –
225 1,5 1,75 2,0 – –
250 1,5 – 2,0 2,5 –
300 1,5 – 2,0 2,5 –
1,5 – 2,0 2,5 3,0
≥ 350
NOTE Lengths of 1,0 m, 1,6 m and 1,85 m are also preferred for the range DN 200 to DN 450.

The length shall be measured to the nearest whole millimetre. The tolerance on the declared nominal length of
pipes and straight fittings shall be from – 1 % to + 4 %, or ± 10 mm, whichever is the larger.
5.4 Squareness of ends
When tested in accordance with EN 295-3:2012, 5.1, the deviation from squareness measured at the ends of
pipes and straight fittings shall be not greater than 6 mm for sizes up to and including DN 300. For sizes
greater than DN 300, the deviation shall not exceed 2 % of DN.
5.5 Deviation from straightness
When tested in accordance with EN 295-3:2012, Clause 6, the deviation from straightness of the barrel of a
pipe, measured to the nearest whole millimetre, shall be not greater than the values given in Table 3.
Table 3 — Deviation from straightness
Nominal size Maximum deviation from straightness
mm/m of nominal length
DN < 150 5
4,5
150 ≤ DN < 200
200 ≤ DN ≤ 300
DN > 300 3
5.6 Water seal of trapped fittings
Trapped fittings for drainage outside buildings and sewerage shall provide a minimum water seal depth of
50 mm.
5.7 Angle of curvature and radius of bends
The preferred nominal angles of curvatures of bends and tolerances shall be as given in Table 4.
Table 4 — Angle of curvature of bends
Preferred nominal angle of curvature of bends 11,25° 15° 22,5° 30° 45° 90°
Tolerance on angle ± 3° ± 4° ± 5°

The centreline radius shall be not less than the nominal size in millimetres. Shorter radius bends are permitted
up to and including DN 150.
5.8 Branch angle of junctions
The preferred nominal angles of junction arms are 45° and 90°. The tolerance for the branch angle shall be
± 5° of the nominal value.
5.9 Crushing strength (F )
N
When tested in accordance with EN 295-3:2012, Clause 7, the crushing strength (F ) of pipes or pipe
N
sections shall be not less than the values given in Tables 5 to 7.
Table 5 — Crushing strength for DN 100, DN 125 and DN 150 pipes
Minimum crushing strength
Nominal size
F
N
DN
kN/m
100 28 34 40
125 – 34 –
150 28 34 40
Higher crushing strengths can be declared for DN 100, DN 125 or DN 150 pipes, provided that the increase is
in steps of 6 kN/m.
Table 6 — Crushing strength for DN 200 to DN 600 pipes
Nominal Class
size
95 120 160 200 240 260 280
Minimum crushing strength
DN
F
N
kN/m
200 – – 32 40 48 52 56
225 – 28 36 45 – – –
250 – – 40 – 60 65 70
300 – – 48 – 72 – –
350 – – 56 70 – – –
400 – 48 64 80 – – –
450 – 54 72 – – – –
500 – 60 80 – – – –
600 57 – 96 – – – –
Higher crushing strengths than those given in Table 6 can be declared for DN 200 to DN 600 pipes providing
that they comply with the requirements of the next higher class. Classes are restricted to 95, 120,160, 200,
240, 260 and 280 and thereafter in increments of 40.
The crushing strength of nominal sizes other than those given in Table 6 and Table 7 shall be calculated in
accordance with Formula (1).
Class×DN
F = (1)
N
Table 7 — Crushing strength for DN 700 to DN 800 pipes
Nominal size Class
DN 120 160 200
Minimum crushing strength
F
N
kN/m
700 84 112 140
800 96 128 160
Higher crushing strengths than those given in Table 7 for each class can be declared for DN 700 to DN 800
pipes provided that they comply with the requirements of the next higher class. Classes are restricted to 120,
160 and 200 and thereafter in increments of 10. For nominal sizes larger than DN 800, the crushing strength
shall be declared.
5.10 Bending tensile strength
If it is required to determine the crushing strength where whole pipes or pipe sections are not available, for
example after failure in use, a bending tensile strength test, in accordance with EN 295-3:2012, Clause 8, can
be carried out on broken pipe pieces.
The crushing strength of the pipe shall be calculated from the mean bending tensile strength of at least ten
test pieces.
5.11 Bending moment resistance (BMR)
When tested in accordance with EN 295-3:2012, Clause 9, the bending moment resistance (BMR) for pipes
with nominal sizes up to and including DN 225 and with nominal lengths greater than 1,1 m shall be not less
than that given in Table 8.
Table 8 — Minimum bending moment resistance (BMR) for crushing strength values (F )
N
Nominal
F F F F F F
size BMR BMR BMR BMR BMR BMR
N N N N N N
DN (kN/m) (kNm) (kN/m) (kNm) (kN/m) (kNm) (kN/m) (kNm) (kN/m) (kNm) (kN/m) (kNm)
100 – – 28 1,3 34 1,7 40 2,0 – – – –
125 – – – – 34 3,0 – – – – – –
150 – – 28 3,4 34 4,0 40 4,6 – – – –
200 – – 32 6,2 40 7,4 48 8,6 52 9,2 56 9,9
225 28 6,5 36 7,4 45 9,0 – – – – – –

Pipes with higher declared values of crushing strength than those given in Tables 5 and 6 shall demonstrate
proportionately higher values of bending moment resistance, when tested in accordance with EN 295-3:2012,
Clause 9.
NOTE A pipe designed in cross section using a specified crushing strength, F , and meeting the relevant bending
N
moment resistance requirement, BMR, does not fail in longitudinal bending before the design crushing load is exceeded.
Therefore, only a calculation for cross sectional loading is needed for the purposes of structural design. Pipes larger than
DN 225 or shorter than 1,1 m that meet the specified crushing strength do not fail in longitudinal bending.
5.12 Bond strength of adhesive used for fixing fired clay parts together
5.12.1 Minimum bending tensile strength of the bond
Fabricated test specimens shall not fracture through the adhesive nor at the adhesive/clay interface under a
bending tensile stress of 5 N/mm after full curing when made and tested in accordance with EN 295-3:2012,
Clause 10.
5.12.2 Minimum strength after immersion
If it is required, fabricated test specimens shall not fracture through the adhesive nor at the adhesive clay
interface under a bending tensile stress of 5 N/mm after full curing when made and tested in accordance with
EN 295-3:2012, Clause 10, after immersion in test solutions as specified in EN 295-3:2012, Clause 23.
5.13 Fatigue strength under cyclic load
Where the resistance to fatigue under cyclic loads is required, it shall be demonstrated by testing in
accordance with EN 295-3:2012, Clause 11, when test pieces shall not fail.
5.14 Watertightness of pipes and junctions
When pipes, junctions or pipe sections are tested in accordance with EN 295-3:2012, Clause 12, the water
addition W needed to maintain the pressure of 50 kPa (0,5 bar) shall not exceed 0,04 l/m of wetted internal
pipe surface area and there shall be no visible leakage.
If pipes are required to withstand continuous working under low pressure, the test pressure and water addition
W shall be agreed between manufacturer and purchaser with the maximum test pressure of 600 kPa (6 bar).
5.15 Chemical resistance
When tested in accordance with EN 295-3:2012, Clause 13, the loss of material from the test piece shall be
declared.
NOTE Under normal conditions of use, vitrified clay pipes are considered to be resistant to chemical attack and
expected to show typical values of loss of material between 0,1 % and 0,25 %.
5.16 Hydraulic roughness
Where the hydraulic roughness is required, it shall be demonstrated by testing in accordance with
EN 295-3:2012, Clause 14 and the hydraulic roughness declared.
NOTE Vitrified clay pipes and fittings have a low hydraulic roughness (typically between 0,02 mm and 0,05 mm).
5.17 Abrasion resistance
Where the abrasion resistance is required, it shall be demonstrated by testing in accordance with
EN 295-3:2012, Clause 15 and the mean depth of abrasion declared.
NOTE 1 Under normal conditions of use, vitrified clay pipes are considered to be resistant to abrasion and have shown
typical values between 0,25 mm and 0,50 mm after 100 000 load cycles
NOTE 2 Vitrified clay pipes and fittings have a Mohs scratch hardness value of 7.
5.18 Airtightness
The airtightness of pipes, bends, junctions and pipe sections shall be tested under either positive or negative
pressure in accordance with EN 295-3:2012, Clause 16.
The barrels of the pipes, bends, junctions and pipe sections shall be tested under positive pressure (using one
of the methods LA, LB, LC or LD) given in Table 9 or negative pressure (using either method LCU or LDU)
given in Table 10. The measured change in pressure ∆p from an initial air pressure p shall not be greater
than the values given in Table 9 or Table 10 for the appropriate test method, nominal size (DN) and testing
time.
NOTE 1 Procedures and values for positive pressure testing are consistent with EN 1610:1997, 13.2, which does not
include negative pressure testing, stating that there is currently insufficient experience with the method.
Table 9 — Initial pressure, change in pressure and testing times under positive pressure
Nominal size DN
Change in
Initial pressure
pressure
≤ 200 225 300 400 600 800 1 000
Test
method
p p p
∆ p
0 0 0
Testing time
mm water mm water
minutes
kPa
kPa gauge gauge
LA 1 100 0,25 25 5 5 7 10 14 19 24
LB 5 500 1 100 4 5 6 7 11 15 19
LC 10 1 000 1,5 150 3 4 4 5 8 11 14
LD 20 2 000 1,5 150 1,5 1,5 2 2,5 4 5 7

Table 10 — Initial pressure, change in pressure and testing times under negative pressure
Nominal size DN
Change in
Initial pressure
pressure
≤ 225 300 400 500 600 700 800 900 1 000
Test
method
p p p
∆ p
0 0 0
Testing time
mm water mm water
minutes
kPa
kPa gauge gauge
LCU -10 -1 000 +1,1 +110 2,5 3 4 5 6 7 8 9 10
LDU -20 -2 000 +1,1 +110 1 1,5 2 2,5 3 3,5 4 4,5 5

NOTE 2 An equivalent head of water of 100 mm ≈ 1 kPa is used in Tables 9 and 10.
The air tightness for nominal sizes DN > 1 000 shall be tested according to EN 1610.
5.19 Tightness of fittings
Fittings, other than bends, junctions and terminal fittings such as gullies, shall be tested in accordance with
EN 295-3:2012, Clause 16, using an air test or in accordance with EN 295-3:2012, Clause 12, using a water
test.
When subjected to an air test, fittings shall withstand an initial air pressure of 1 kPa (≈100 mm water gauge)
and the pressure shall not drop below 0,75 kPa (≈ 75 mm water gauge) in 5 min. When subjected to a water
test, fittings shall withstand a water pressure of 50 kPa (0,5 bar) for 5 min without visible leakage.
5.20 Resistance against high pressure water jetting
The jetting resistance shall be tested in accordance with EN 295-3:2012, 17.2, at 12 MPa (120 bar) using a
moving nozzle and/or EN 295-3:2012, 17.3, at 280 bar using a stationary nozzle. After testing, the appearance
of the pipe shall be in accordance with 5.1.4.
NOTE Vitrified clay pipes and fittings are considered to be resistant to high pressure water jetting when tested as
specified.
6 Requirements for joints and joint assemblies
6.1 Joint materials
6.1.1 Rubber sealing elements
Rubber sealing elements shall be in accordance with EN 681-1.
6.1.2 Polyurethane sealing elements
Polyurethane sealing elements shall be in accordance with EN 681-4.
6.1.3 Polypropylene sleeve couplings
6.1.3.1 Material requirements
Polypropylene sleeve couplings shall meet either the material requirements given in Table 11, when tested in
accordance with EN 295-3:2012, Clause 19, or the performance requirements of 6.1.3.2.
Table 11 — Material requirements for polypropylene sleeve couplings
Test Unit Requirement Test method according to
EN 295-3:2012,
Clause
Melt flow index — 19.1
≤ 1,5 times nominal value
Tensile strength 19.2
N/mm ≥ 18
Elongation at break % 19.2
≥ 200
Elevated temperature — No defects 19.3

6.1.3.2 Performance requirements
When tested in accordance with of EN 295-3:2012, Clause 20, polypropylene sleeve couplings shall withstand
either:
a) a constant internal water pressure of 50 kPa (0,5 bar) for a minimum of 1 min without visible leakage, or
b) a constant internal air pressure of 25 kPa (0,25 bar) for 1 min whilst submerged in water without visible
leakage.
6.1.4 Creep resistance of rigid fairing materials
6.1.4.1 General
Rigid fairing materials used in socket joints shall meet the requirements of either 6.1.4.2 or 6.1.4.3.
6.1.4.2 Deformation
When tested in accordance with EN 295-3:2012, 25.1, the initial deformation ε shall be less than 5 % and the
short term deformation ∆ε shall be less than 8 %.
4;0
6.1.4.3 Indentation
+30
When tested in accordance with EN 295-3:2012, 25.2, the indentation after 24 h min shall be less than
0,5 mm.
6.1.5 Other jointing materials
Other materials used in joint assemblies shall comply with the relevant European Standard, European
Technical Approval or the manufacturers’ declared specification, as applicable, which shall also include
requirements for long term behaviour.
6.2 Watertightness of joint assemblies under deflection and shear load
6.2.1 Test pressures
Joint assemblies shall satisfy the requirements of 6.2.2 and 6.2.3 when tested at both internal and external
pressures of 5 kPa (0,05 bar) and 50 kPa (0,5 bar).
Where pipes and their joint assemblies are required to withstand continuous working under low pressure, the
test pressure shall be declared.
A component of a joint assembly shall not be tested in more than one assembly.
6.2.2 Angular deflection
One pipe in a joint assembly shall be deflected by the method described in EN 295-3:2012, 21.2, by the
amount specified in Table 12 and when so deflected, the joint assembly shall withstand the test pressures
specified in 6.2.1 for 5 min without visible leakage.
Table 12 — Deflection
a
Nominal size
Deflection
mm
100 ≤ DN ≤ 200 80
200 < DN ≤ 500 30
500 < DN ≤ 800 20
DN > 800 10
a
Per metre of deflected pipe length.

6.2.3 Shear resistance
A joint assembly shall withstand short term and long term shear load when tested according to
EN 295-3:2012, 21.3. An external load shall be applied to one pipe to produce a minimum shear load at the
joint assembly of 25 N/mm of nominal size. The joint assembly shall withstand the test pressures specified in
6.2.1 for 15 min without visible leakage.
NOTE 1 Joints passing this test are considered to be resistant to root penetration.
NOTE 2 Higher values for shear load resistance can be required when higher classes than those in Tables 6 and 7 are
declared. On the basis that class 160 requires a shear load of 25 N/mm nominal size, class 200 will require a shear load of
31,25 N/mm nominal size (shear load factor 1,25) and class 240 will require a shear load of 37,5 N/mm nominal size
(shear load factor 1,50). The shear load multiplication factor for other classes can be interpolated or extrapolated linearly.
6.3 Continuity of invert in joint assemblies
When tested in accordance with EN 295-3:2012, Clause 22, the calculated difference in invert levels between
pipes and fittings shall not exceed the following values:
 4 mm for sizes up to and including DN 400;
 1 % of the nominal size in mm for sizes above DN 400.
If it is necessary for achieving continuity of invert, the pipes and fittings shall be marked to identify the
orientation.
6.4 Joint interchangeability of pipes and fittings in joint assemblies
Pipes and fittings of the same joint system of the same nominal size and the same class shall be directly inter-
changeable.
Joint Systems C, D and I, for which the socket or socket fairing internal diameter d is the controlling
dimension, are specified in Table 13 (see Figure 1a)). Joint Systems E, F, G and H, for which the spigot
outside diameter d is the controlling dimension (see Figure 1 b)), are specified in Table 14. For joint Systems
C to H the tolerances on d and d given in Tables 13 and 14 shall be met.
3 4
a)         b)
Figure 1 — Joint dimensions
Other joint systems with different values of d and d are permitted provided that the pipes and fittings comply
3 4
with 5.2 and the joint assemblies comply with 6.1, 6.2, 6.3 and 6.5 to 6.7.
Pipes of different strengths but with the same DN and joint dimensions should not normally be joined together
unless specifically required by the pipeline design.
Table 13 — Dimensions and tolerances for socket controlled joint systems
Crushing Socket or fairing internal diameter
Nomina
Class
strength d
l size
F
N mm
System C System D System I
DN
kN/m
100 – 34 _ 146,8 ± 0,5 –
150 – 28 208,0 ± 0,5 204,5 ± 0,5 –
150 – 34 208,0 ± 0,5 204,5 ± 0,5 –
150 – 40 208,0 ± 0,5 204,5 ± 0,5 –
200 160 32 260,0 ± 0,5 – –
200 200 40 260,0 ± 0,5 269,0 ± 0,5 –
200 240 48 275,0 ± 0,5 – 260,0 ± 0,5
200 260 52 260,0 ± 0,5 – –
200 280 56 – 269,0 ± 0,5 –
225 160 36 – 294,6 ± 0,5 –
225 200 45 300,0 ± 0,5 – –
250 160 40 317,5 ± 0,5 331,3 ± 0,6 –
250 240 60 341,5 ± 0,5 331,3 ± 0,6 317,5 ± 0,5
250 260 65 317,5 ± 0,5 – –
300 160 48 371,5 ± 0,5 385,8 ± 0,6 –
300 240 72 398,5 ± 0,5 385,8 ± 0,6 –
350 160 56 433,5 ± 0, 5 – –
350 200 70 459,0 ± 0,5 – –
400 120 48 483,5 ± 0,5 – –
400 160 64 507,5 ± 0,5 521,0 ± 0,75 –
400 200 80 515,5 ± 0,5 – –
450 120 54 – 583,1 ± 0,75 –
450 160 72 579,0 ± 0,5 583,1 ± 0,75 –
500 120 60 605,0 ± 0,5 651,5 ± 0,5 –
500 160 80 637,0 ± 0,5 – –
600 95 57 720,0 ± 0,5 739,8 ± 0,5 –
600 160 96 758,0 ± 0,5 – –
700 120 84 871,0 ± 0,5 – –
700 160 112 892,0 ± 0,5 – –
700 200 140 892,0 ± 0,5 – –
800 120 96 976,0 ± 0,5 – –
800 160 128 1 001,5 ± 0,5 – –
Higher crushing strengths can be declared provided that they conform to the requirements of a higher class (see
5.9).
Table 14 — Dimensions and tolerances for spigot controlled joint systems
DN Class Crushing Spigot outside diameter
a
strength
d
mm
F
N
kN/m
System E System F System G System H
100 - 28 – – 131,4 ± 2 122 ± 1,5
100 - 34 – –
131 ± 1,5 131,4 ± 2
100 - 40 – – –
122 ± 1,5
125 - 34 – – –
159 ± 2
150 - 28 – –
187,75 ± 2,75 178 ± 1,5
150 - 34 – – –
186 ± 2
150 - 40 178 ± 1,5 – 187,75 ± 2,75 –
200 160 32 231 ± 2 242 ± 3 – 237 ± 2
200 200 40 – – –
242 ± 3
200 240 48 – – –
237 ± 2
200 280 56 – – –
254 ± 4
225 120 28 – – –
274 ± 4
225 160 36 – 271 ± 3 – –
225 200 45 – –
263 ± 2 278 ± 4
250 160 40 – –
287 ± 3 296 ± 3
250 240 60 – – –
296 ± 3
250 280 70 – – –
318 ± 4
300 160 48 – – –
380 ± 4
300 240 72 357 ± 4 – 380 ± 4, –
a
d is the mean value of the spigot outside diameter (i.e. circumference divided by π).
6.5 Chemical and physical resistance to effluent of joint assemblies
Joint assemblies shall be tested by the methods described in EN 295-3:2012, Clause 23, using all the test
solutions specified. A separate joint assembly shall be used for each test solution. Each joint assembly which
has been exposed to one of the test solutions shall withstand both the constant internal pressures specified in
6.2.1 for 5 min without visible leakage.
6.6 Thermal cycling stability of joint assemblies
Joint assemblies shall withstand cyclic temperature changes between (-10 ± 2) °C and (70 ± 2) °C without
visible defect when tested in accordance with EN 295-3:2012, 24.1. A water tightness test shall then be
carried out on the same test joint assembly using an internal pressure of 50 kPa (0,5 bar) for 15 min. There
shall be no visible leakage.
6.7 Long-term thermal stability of joint assemblies
Joint assemblies shall withstand a long-term thermal stability test in accordance with EN 295-3:2012, 24.2, for
+ 5
seven days at a temperature of 45 °C. A water tightness test shall then be carried out on the same test
joint assembly using an internal pressure of 50 kPa (0,5 bar) for 15 min. There shall be no visible leakage.
7 Common requirements for pipes, fittings and joints
7.1 Reaction to fire
Where the use of vitrified clay pipes and fittings with their joints is subject to national regulatory requirements
on reaction to fire, their reaction to fire performance shall be declared. Vitrified clay pipes and fittings with their
joints in use are classified as Class A1 without the need for testing in accordance with the relevant
1)
Commission decision .
NOTE 1 Vitrified clay, as a homogeneously distributed material for these products, is considered as material of known
and stable performance with respect to the reaction to fire performance as it does not consist of any organic material and
consequently does not contribute to the fire. Under this condition, it may be considered as the Class A1 material.
NOTE 2 The class of reaction to fire performance of vitrified clay pipes and fittings with their joints is regarded as the
class for the constituent material (i.e. vitrified clay).
Conversely, where use of this product is not subject to national regulatory requirements on reaction to fire,
either the Class A1 (see above) or Class F (see Note 3) may be declared.
NOTE 3 Class F according to EN 13501-1 is equivalent to "No Performance Determined" (NPD).
7.2 Durability
Vitrified clay pipes, fittings and joints for drains and sewers are products of known and stable performance for
defined end use applications with respect to their established durability for which experience has been
accumulated over a long period of time.
Durability of crushing strength and longitudinal bending strength (if applicable) is ensured by meeting the
requirements of 5.1, 5.15 and 5.20 for pipes and fittings.
Durability of tightness is ensured by meeting requirements of 6.5, 6.6 and 6.7 for joint assemblies.

1) See Decision of the Commission 96/603/EC of 1996-10-04 (see OJEU L 267 of 1996-10-19), as twice amended by
2000/605/EC of 2000-09-26 (see OJEU L 258 of 2000-10-12) and by 2003/424/EC of 2003-06-06 (see OJEU L 144 of
2003-06-12).
EN
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