Cast iron pipes systems for the evacuation of water from works - Characteristics and test methods

This document specifies product characteristics, test/assessment methods and of how to express test/assessment results. Cast iron pipelines kits are usually composed by cast iron pipes, fittings, joints and accessories.
This document covers the range of nominal diameter from DN /40 to DN 600 inclusive.
The cast iron includes grey cast iron and ductile cast iron.
The roof gullies used for siphonic systems are outside the scope of this standard.
Sewerage applications are outside the scope of this standard.
It is intended to be used for the construction of gravity or vacuum discharge pressurized or unpressurised networks installed inside and/or outside Works, above and/or below ground, in construction works.

ussrohrsysteme zur Ableitung von Wasser aus Entwässerungsanlagen - Eigenschaften und Prüfverfahren

Dieses Dokument legt Produkteigenschaften, Prüf-/Bewertungsverfahren und die Angabe von Prüf-/Bewertungsergebnissen fest. Rohrleitungskits aus Gusseisen bestehen üblicherweise aus gusseisernen Rohren, Formstücken, Rohrverbindungen und Zubehörteilen.
Dieses Dokument deckt den Nenndurchmesserbereich von DN /40 bis einschließlich DN 600 ab.
Das Gusseisen umfasst Gusseisen mit Lamellengraphit und duktiles Gusseisen.
Die für Siphonanlagen verwendeten Dachabläufe liegen außerhalb des Anwendungsbereichs dieser Norm.
Abwasseranwendungen liegen außerhalb des Anwendungsbereichs dieser Norm.
Es ist zur Anwendung für den Bau von druckbeaufschlagten oder drucklosen Rohrleitungsnetzen für die Schwerkraft  oder Unterdruckentwässerung vorgesehen, die innerhalb und/oder außerhalb von Bauwerken über  und/oder unterirdisch installiert werden.

Réseaux de canalisations en fonte pour l'évacuation des eaux des bâtiments - Caractéristiques et méthodes d'essai

Le présent document spécifie les caractéristiques des produits, les méthodes d’essai/d’évaluation et comment exprimer les résultats d’essai/d’évaluation. Les kits de canalisations en fonte sont généralement constitués de tuyaux, de raccords, d’assemblages et d’accessoires en fonte.
Le présent document couvre la gamme de diamètres nominaux de DN 40 à DN 600 compris.
La fonte comprend la fonte à graphite lamellaire et la fonte ductile.
Les naissances utilisées avec les systèmes siphoïdes ne font pas partie du domaine d’application du présent document.
Les applications d’assainissement ne font pas partie du domaine d’application du présent document.
Le présent document est destiné à être utilisé pour la construction de réseaux gravitaires, sous vide, pressurisés ou non pressurisés, installés à l’intérieur et/ou à l’extérieur des bâtiments, en aérien et enterrés, dans les ouvrages de construction.

Cevni sistemi iz litega železa za odvodnjavanje iz stavb - Karakteristike in preskusne metode

General Information

Status
Published
Public Enquiry End Date
04-Mar-2019
Publication Date
12-Dec-2021
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Dec-2021
Due Date
06-Feb-2022
Completion Date
13-Dec-2021

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 877:2022
01-januar-2022
Nadomešča:
SIST EN 877:2001
SIST EN 877:2001/A1:2007
SIST EN 877:2001/A1:2007/AC:2008
Cevni sistemi iz litega železa za odvodnjavanje iz stavb - Karakteristike in
preskusne metode

Cast iron pipes systems for the evacuation of water from works - Characteristics and test

methods
ussrohrsysteme zur Ableitung von Wasser aus Entwässerungsanlagen - Eigenschaften
und Prüfverfahren
Réseaux de canalisations en fonte pour l'évacuation des eaux des bâtiments -
Caractéristiques et méthodes d'essai
Ta slovenski standard je istoveten z: EN 877:2021
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
23.040.40 Kovinski fitingi Metal fittings
91.140.80 Drenažni sistemi Drainage systems
SIST EN 877:2022 en,fr,de

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

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SIST EN 877:2022
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SIST EN 877:2022
EN 877
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2021
EUROPÄISCHE NORM
ICS 23.040.01 Supersedes EN 877:1999
English Version
Cast iron pipe systems and their components for the
evacuation of water from works - characteristics and test
methods

Réseaux de canalisations en fonte et leurs composants Rohrsysteme aus Gusseisen und ihre Komponenten zur

pour l'évacuation des eaux des bâtiments - Entwässerung von Gebäuden - Merkmale und

Caractéristiques et méthodes d'essai Prüfverfahren
This European Standard was approved by CEN on 16 August 2021.

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

© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 877:2021 E

worldwide for CEN national Members.
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SIST EN 877:2022
EN 877:2021 (E)
Contents Page

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

1 Scope .......................................................................................................................................................... 4

2 Normative references .......................................................................................................................... 4

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

4 Characteristics for Cast Iron pipe systems and components ................................................ 7

5 Testing, assessment and sampling methods ............................................................................. 23

6 Assessment and verification of constancy of performance - AVCP ................................... 39

Annex A (informative) Other dimensions of pipes, fittings and accessories for buried kits 48

Annex B (informative) Other dimensions of pipes, fittings and accessories for rainwater

kits to be installed outside buildings ........................................................................................... 49

Annex C (informative) Field of use for buried pipes and fittings, characteristics of soils ..... 50

Annex D (informative) General information on some product properties ................................. 51

Annex E (normative) Method of calculation of gross calorific potential of external coatings

for the range of products .................................................................................................................. 52

Annex F (normative) Mounting and fixing conditions for Single Burning Item test ................ 53

Annex G (informative) Marking .................................................................................................................. 56

Bibliography ....................................................................................................................................................... 57

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SIST EN 877:2022
EN 877:2021 (E)
European foreword

This document (EN 877:2021) has been prepared by Technical Committee CEN/TC 203 “Cast iron pipes,

fittings and their joints”, the secretariat of which is held by AFNOR.

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 April 2022, and conflicting national standards shall be

withdrawn at the latest by April 2022.

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.

This document has been prepared under a Mandate given to CEN by the European Commission and the

European Free Trade Association.

This document supersedes EN 877:1999, EN 877:1999/A1:2006 and EN 877:1999/A1:2006/AC:2008.

This document includes the following significant technical changes with respect to the previous:

a) Product standard has been extended to kit and components standard.

b) Chapter 4 about characteristics has been restructured with all essential characteristics first.

c) Grip collars have been included as kit components.

d) Pressure tightness including Fittings with access as a kit component has been added.

e) Fire reaction classification has been amended with the agreement of WG 4 of TC 127.

f) Chapter 6 about Assessment and verification of constancy of performance – AVCP has been updated.

This document is one of a series of standards for cast iron products for pipelines for various applications.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.

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 877:2022
EN 877:2021 (E)
1 Scope

This document specifies product characteristics, test/assessment methods and how to express

test/assessment results. Cast iron pipelines kits are usually composed of cast iron pipes, fittings, joints

and accessories.

This document covers the range of nominal diameter from DN 40 to DN 600 inclusive.

The cast iron includes grey cast iron and ductile cast iron.

The roof gullies used for siphonic systems are outside the scope of this document.

Sewerage applications are outside the scope of this document.

It is intended to be used for the construction of gravity or vacuum discharge pressurized or unpressurised

networks installed inside and/or outside works, above and/or below ground and in construction works.

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 598:2007+A1:2009, Ductile iron pipes, fittings, accessories and their joints for sewerage applications -

Requirements and test methods

EN 681-1:1996, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage

applications — Part 1: Vulcanized rubber
EN 10088-1, Stainless steels — Part 1: List of stainless steels
EN 10204, Metallic products — Types of inspection documents

EN 13501-1:2018, Fire classification of construction products and building elements — Part 1:

Classification using data from reaction to fire tests

EN 13823, Reaction to fire tests for building products — Building products excluding floorings exposed to

the thermal attack by a single burning item

EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts,

screws and studs with specified property classes — Coarse thread and fine pitch thread (ISO 898-1)

EN ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with

specified property classes — Coarse thread and fine pitch thread (ISO 898-2)
EN ISO 1514, Paints and varnishes — Standard panels for testing (ISO 1514)

EN ISO 1716, Reaction to fire tests for products — Determination of the gross heat of combustion (calorific

value) (ISO 1716)
EN ISO 2409, Paints and varnishes — Cross-cut test (ISO 2409)
EN ISO 2808, Paints and varnishes — Determination of film thickness (ISO 2808)

EN ISO 2812-1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in

liquids other than water (ISO 2812-1)
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SIST EN 877:2022
EN 877:2021 (E)

EN ISO 3506-1, Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part

1: Bolts, screws and studs with specified grades and property classes (ISO 3506-1)

EN ISO 3506-2, Fasteners — Mechanical properties of corrosion-resistant stainless steel fasteners — Part

2: Nuts with specified grades and property classes (ISO 3506-2)

EN ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity

and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of

blistering (ISO 4628-2)

EN ISO 4628-3, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity

and size of defects, and of intensity of uniform changes in appearance — Part 3: Assessment of degree of

rusting (ISO 4628-3)

EN ISO 6506-1, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1)

EN ISO 6892-1:2019, Metallic materials — Tensile testing — Part 1: Method of test at room temperature

(ISO 6892-1:2019)

EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227)

EN ISO/CIE 11664-4, Colorimetry — Part 4: CIE 1976 L*a*b* colour space (ISO/CIE 11664-4)

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)
ISO 185:2020, Grey cast irons — Classification

ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

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:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
discharge system for buildings

system of pipes, fittings, accessories and joints used to collect and drain waste water and rainwater from

a building; it comprises discharge pipes, stack ventilation and rainwater pipes, installed within the limits

of a building or attached to the building and this includes pipes between the building and the inspection

chambers

Note 1 to entry: This applies to gravity or vacuum, inside and outside buildings, above and below ground.

3.2
drain

system of pipes, fittings, accessories and joints installed outside the limits of a building in order to connect

the discharge system of this building to a sewer or a septic tank
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SIST EN 877:2022
EN 877:2021 (E)
3.3
sewer

system of pipes designed to collect waste water and rainwater from buildings and surface water and to

convey them to the point of disposal or treatment
3.4
cast iron
alloy of iron and carbon in which graphite can be present in different forms
3.5
kit

construction product placed on the market by a single manufacturer as a set of at least two separate

components that need to be put together to be incorporated in the construction work

Note 1 to entry: The wording cast iron pipe systems is here in this document equivalent to cast iron pipe kits.

[SOURCE: CPR N° 305/2011 of 9 March 2011]
3.6
pipe

kit component casting of uniform bore, straight in axis, normally having plain ends but which can also be

socketed
3.7
fitting

kit component in cast iron which allows a deviation, a change of direction or diameter, including access

elements and traps
3.8
coupling

kit component, which is a jointing element for pipes and/or fittings subjected to internal or external

pressure
3.9
gasket
kit component providing sealing function to joints
3.10
clamping

kit component, which is a securing element for pipes and/or fittings subjected to internal pressure,

providing axial restraint to the end thrust arising from a change of direction, blank end etc., e.g. grip

collars
3.11
grip collar

kit component that ensures axial restraint up to a defined pressure by mounting it over a joint

3.12
joint

connection between the ends of pipes and/or fittings, including the coupling or clamping component,

with sealing effected by elastomeric gasket(s); as soon as it is an assembly of several kit components as

coupling, clamping or gaskets, the joint is a kit
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SIST EN 877:2022
EN 877:2021 (E)
3.13
accessory

kit component, any element used in a network, e.g. for maintenance or inspection reasons

3.14
nominal size

alphanumerical designation of size for components of a pipework system, to be used for reference

purposes, which comprises the letters DN followed by a dimensionless which is indirectly related to the

physical size, in millimetres, of the bore or outside diameter of the end connections

Note 1 to entry: In this document, it is the bore.
[SOURCE: EN ISO 6708]
3.15
length
effective length of a pipe or fitting

Note 1 to entry: For double spigot pipes and fittings, the effective length is equal to the overall length. For spigot

and socket pipes and fittings, the effective length is equal to the overall length minus the spigot insertion depth as

given by the manufacturer.
3.16
range of products

design system produced by one manufacturer for which the test results for one or more characteristics

from any one product within the range are valid for all other products within this range

3.17
cast iron pipe system under vacuum
siphonic system for draining rainwater and vacuum system for waste waters
3.18
design system

collection of components from which a “kit” may be created for subsequent installation in the works

Note 1 to entry: A design system might, for example, be presented in a supplier’s catalogue, from which the

purchaser can make a choice. A design system can give rise to one or many different “kits”, but the system itself

cannot be bought.
3.19
assembled system
kit after it has been installed in the works

Note 1 to entry: An “assembled system” may be made up only of the “kit” or it may comprise the “kit” assembled

with one or more other products which could themselves be construction products.
4 Characteristics for cast iron pipe systems and components
4.1 Crushing strength (only for grey cast iron)

Cast iron components as pipes, fittings and accessories shall have the minimal crushing strength given in

Table 7. Test method is described in 5.6.
The assessment of each of those components insures the assessment of the kit.
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SIST EN 877:2022
EN 877:2021 (E)
4.2 Impact resistance for kits

The impact resistance assessment is given by the mechanical properties of pipes, fittings and accessories.

They shall have the minimal tensile strength and maximum Brinell hardness as given in Table 7 in 4.10.2.

Test method for tensile strength is given in 5.4.
Test method for Brinell hardness measurement is given in 5.5
4.3 Tightness: gas and liquid
4.3.1 General

NOTE In this document, all pressures are relative pressures, expressed in bar (100 kPa = 1 bar).

The assessment of each component as described in this 4.3 insures the assessment of the kit.

4.3.2 Lengths of fittings and sealing zone

Lengths of fittings shall be given in the manufacturers’ catalogues. When measured in accordance with

5.2.7, the lengths of fittings shall be within a tolerance of ± 5 mm.

The ends of the fittings shall have sealing zones straight in axis and free from marking and free from

defects which could impair the fitness for use.

The length T (see Figure 1) of this sealing zone shall comply with the values given in Table 1.

Figure 1 — Length of the sealing zone
4.3.3 Geometry of fittings and accessories

The geometry of fittings and accessories is not part of this document. Fittings and accessories of geometry

used in various countries are in conformity with this document as long as they comply with all other

technical requirements of this document.
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SIST EN 877:2022
EN 877:2021 (E)
Table 1 — Sealing zone of fittings
DN Length T of sealing zone
Lower deviation on T
mm P
40 30
50 30
70 35
75 35 - 5
100 40
125 45
150 50
200 60
250 70
300 80
400 80 - 4
500 80
600 80

Upper deviations are not given and sealing zones with a length greater than T are permitted.

4.3.4 Water tightness
4.3.4.1 Water tightness of pipes and fittings
4.3.4.1.1 Water tightness of pipes
Water tightness of pipes can be demonstrated by the following calculation.
20××eR
DS×
where
e is the minimum pipe wall thickness, in millimetres;
D is the mean pipe diameter (DE – e), in millimetres;
DE is the nominal pipe external diameter (see Table 6), in millimetres;
R is the minimum tensile strength of cast iron, in Megapascals;

(420 MPa for spheroidal graphite cast iron and 200 MPa for grey cast iron; see 4.10.2);

S is a safety factor of 3.

For a DN 100 pipe in grey cast iron, the internal pressure strength is more than 35 bars.

Expected results are given in Table 2.
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SIST EN 877:2022
EN 877:2021 (E)
4.3.4.1.2 Water tightness of fittings
4.3.4.1.2.1 Fittings without access or door

Expected results for water tightness of fittings without access or door are given in Table 2 and the

demonstration done for pipe is valid for these fittings.
4.3.4.1.2.2 Fittings with access or door

When tested in accordance with 5.8, fittings with access or door shall exhibit no visible leakage from the

access or door when subjected to the internal hydrostatic test pressure given in Table 2.

Table 2 — Water tightness of fittings with access or door - performance requirements

Internal test pressure in bar
DN ≤ DN 200 DN > DN 200
a a
0 to 5 0 to 3

0 to 0,5 bar water pressure for fittings which will only carry limited pressures because of their

intended use and installation e.g. sanitary application.
4.3.4.2 Water tightness of joints
4.3.4.2.1 General

When tested in accordance with 5.9.4 and 5.9.5, on test apparatus preventing any excessive axial

displacement and subjected to the test conditions and hydrostatic pressures given in Table 4, the joints

shall exhibit no visible leakage.

Table 3 specifies the hydrostatic test pressures for the following test conditions:

a) joint with pipes aligned;
b) joint with pipes deflected to an angle of at least:
3° for nominal sizes up to and including DN 200;
1°45′ for nominal sizes greater than DN 200;

c) joint subject to a shear force of at least 10 DN in newtons, with pipes aligned.

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SIST EN 877:2022
EN 877:2021 (E)
Table 3 — Water tightness of joints - performance requirements
Test condition Hydrostatic test pressure in bar
DN ≤ DN 200 DN > DN 200
internal external internal external
a b c a b c
1) aligned 0 to 5 0 to 0,5 0 to 3 0 to 0,5
a a
2) deflected 0 to 5 – 0 to 3 –
a b a b
3) subject to shear force 0 to 1 – 0 to 1 –

0 to 0,5 bar water pressure for joints which will only carry limited pressures because of their intended

use and installation; 0 to 0,1 bar water pressure for joints connecting to sanitary ware, e.g. WC, washbasin

and non-pressurized gravity flow.
Applicable to socketed joints only when they are to be buried.

Does not apply to nominal sizes less than DN 100 and does not apply to joints connecting to sanitary ware,

e.g. WC, washbasin.
4.3.4.2.2 Water tightness for buried systems

For joints which are used exclusively for buried kits, the internal hydrostatic test pressure specified in

Table 3 lines a) and b) may be limited to 1 bar. This may limit to 1 bar also the test pressure specified in

Table 4 for buried grip collars.
4.3.4.2.3 Water tightness for rainwater systems installed outside buildings

Joints shall be watertight at least to non-pressurized gravity flow. See note a) in Table 3.

4.3.4.3 Resistance to end thrust with grip collars

When tested in accordance with 5.10.3, on test apparatus preventing any excessive axial displacement

and subjected to the test conditions:
— joint with pipes aligned;
— internal hydrostatic pressures given in Table 4;

the grip collars shall limit the axial movement of pipes. During each stage in pressure, there shall be no

axial movement of the pipes.
Table 4 — Resistance to end thrust of grip collars - performance requirements
Test condition Internal test pressure in bar
DN ≤ DN 200 DN > DN 200
aligned 0 to 5 0 to 3
4.3.5 Air tightness

In order to ensure a seal against odours, all joints shall be tight against positive internal air pressure of

0 mbar to 10 mbar when tested in accordance with 5.9.6.
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SIST EN 877:2022
EN 877:2021 (E)
4.4 Vacuum tightness (only for under vacuum evacuation of water from works)
4.4.1 General

The assessment of each component as described in this 4.4 insures the assessment of the kit.

4.4.2 Pipes resistance to vacuum
Expected results for pipes resistance to vacuum are given in Table 5, see 4.4.4.
4.4.3 Fittings – resistance to vacuum
4.4.3.1 Fittings without access or door

Expected results for resistance to vacuum of Fittings without access or door are given in Table 5. The

demonstration done for pipe is valid for these fittings.
4.4.3.2 Fittings with access or door

When tested in accordance with 5.8, fittings with access or door shall withstand a negative pressure. An

initial negative pressure of −0,8 bar is generated and after a waiting time of 1 h, the final pressure shall

not reach the limiting values given in Table 5.
4.4.4 Joints – resistance to vacuum

In addition to the technical requirements of 4.3.4.2, 4.3.5 and 4.12 and when tested in accordance with

5.13, the joints shall withstand a negative pressure. An initial negative pressure of −0,8 bar is generated

and after a waiting time of 1 h, the final pressure shall not reach the limiting values given in Table 5.

Table 5 — Resistance to vacuum - performance requirements
Test condition Test pressure in bar
DN ≤ DN 200 DN > DN 200
aligned −0,7 −0,4
4.5 Maximum load for admissible deformation (only for below ground)

Maximum load of kits and components can be assessed by the maximum load of the pipe.

The load bearing capacity expressed by the load per unit length uniformly distributed on the top of the

pipe are evaluated by means of the formula below:
πσ..e
min
3(DE − e )
max min
where

f is the ultimate load per unit length on the top of the pipe, in newtons per millimetre;

is the minimum wall thickness of the pipe, in millimetres;
min
DE is the maximum external diameter, in millimetres;
max
σ is the ring crush strength in accordance with Table 7, in megapascals.
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SIST EN 877:2022
EN 877:2021 (E)

4.6 Reaction to fire (only for above ground evacuation of water from works and under

vacuum evacuation of water from works)
4.6.1 Reaction to fire of components

As written in the scope of EN 13501-1:2018, products are considered in relation to their end use

application. Components are always assembled with other components into a system, therefore the

assessment of single component is not considered as appropriate. Consequently, the assessment only

applies to kit.
4.6.2 Reaction to fire of kits

The reaction to fire indicates the degree of contribution of the material to the behaviour of the

construction product in the event of fire. When tested in accordance to the test methods given in 5.7.3.3,

relevant for the claimed class, the test results are expressed as a class according to EN 13501-1.

Whether products covered by this document are made from one or more of the materials that have been

considered, under established conditions, as belonging to the category “No contribution to fire” because

of their low level of combustibility, the reaction to fire class A applies to these products without the need

of carrying out reaction to fire tests.
The mounting and fixing conditions for the SBI test are given in Annex F.
Considering the products in their end-use conditions as an assembled system:

— internal coatings are not relevant as they are not exposed to fire (a very small volume of smoke can

be created but this will exit the building via stacks vents);

— gaskets of joints are not relevant either as in the end-use conditions they are not exposed to fire

(except for some designs a very small compressed edge) and as such represent a very low quantity

of organic material.

In order to verify these assumptions, they shall be tested according to Annex F using the mounting

adaptations given.

According to EN 13501-1, as the gross calorific potential (PCS) of the products considered as an

assembled system including pipes, fittings and couplings, due to their densities and weight quantities,

will always satisfy the requirement on PCS for the product as a whole (≤2,0 MJ/kg), the reaction to fire

classification shall be obtained as follows:

— external coatings, if containing more than 1 % by weight or volume (whichever is the more onerous)

of homogeneously distributed organic material, shall satisfy the requirements of 4.11.3 on

ignitability or gross calorific potential, depending on the intended class of reaction to fire;

and

— a range of products (including coated pipes, coated fittings, couplings and possibly grip collars) shall

be tested according to Annex F using the mounting adaptations given, and shall satisfy the

requirements of classification criteria and additional classifications listed in EN 13501-1 for the

intended class of reaction to fire. If a range of products includes grip collars, as these products are

not always installed on the discharge system depending on the intended performance:

— the test shall be done without them to evaluate the behaviour of the couplings without any

protection to the flame;

— and only if the grip collars include an organic material, the test shall be done again with the grip

collars installed on top of the couplings (see Annex F).
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SIST EN 877:2022
EN 877:2021 (E)

In order for a manufacturer of only joints to obtain a classification, the joints shall be tested once

according to Annex F using the mounting adaptations given, with pipes and fittings of a cast iron range of

products which already has a reaction to fire classification issued by a certified test laboratory. It shall be

demonstrated that the existing classification of the range of products is not made worse by the

substitution of the joints.
NOTE See D.2.
4.7 Surface condition

Pipes, fittings and accessories shall be free from defects (superficial and other defects) which could be

detrimental to their correct operation or long service life as defined in this document.

4.8 Dimensions
4.8.1 Nominal size (DN)
The nominal sizes shall be as given in column 1 of Table 6.
4.8.2 External diameter (DE)

The standard external diameters (DE) of pipes and fittings, as well as the tolerances applicable to these,

shall comply with the values given in Table 6, when measured in accordance with 5.2.1. When, by

agreement between manufacturer and purchaser, specific coatings are supplied for special applications,

other tolerances ar
...

SLOVENSKI STANDARD
oSIST prEN 877:2019
01-februar-2019

Cevni sistemi iz litega železa za hišne vodne odtoke - Karakteristike in preskusne

metode

Cast iron pipes systems for the evacuation of water from works - Characteristics and test

methods
Rohrsystem aus Gusseisen, zur Entwässerung von Gebäuden - Merkmale und
Prüfverfahren
Systèmes de tuyaux en fonte, destinés à l’évacuation des eaux des bâtiments -
Caractéristiques et méthodes d’essais
Ta slovenski standard je istoveten z: prEN 877
ICS:
23.040.10 Železne in jeklene cevi Iron and steel pipes
23.040.40 Kovinski fitingi Metal fittings
91.140.80 Drenažni sistemi Drainage systems
oSIST prEN 877:2019 en,fr,de

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

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oSIST prEN 877:2019
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oSIST prEN 877:2019
DRAFT
EUROPEAN STANDARD
prEN 877
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2019
ICS 23.040.01 Will supersede EN 877:1999
English Version
Cast iron pipes systems for the evacuation of water from
works - Characteristics and test methods

Systèmes de tuyaux en fonte, destinés à l'évacuation Rohrsystem aus Gusseisen, zur Entwässerung von

des eaux des bâtiments - Caractéristiques et méthodes Gebäuden - Merkmale und Prüfverfahren

d'essais

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 203.

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, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 877:2019 E

worldwide for CEN national Members.
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Contents Page

European foreword ............................................................................................................................................ 4

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

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

3 Terms and definitions ......................................................................................................................... 6

4 Cast Iron Pipe systems characteristics .......................................................................................... 9

4.1 Crushing strength (only for grey cast iron) ................................................................................. 9

4.2 Impact resistance .................................................................................................................................. 9

4.3 Tightness: gas and liquid .................................................................................................................... 9

4.4 Vacuum Tightness (only for under vacuum evacuation of water from works)............ 13

4.5 Maximum load for admissible deformation (only for kits below ground) .................... 13

4.6 Release of dangerous substances (regulated substances) ................................................... 13

4.7 Reaction to Fire (only for above ground evacuation of water from works and, under

vacuum evacuation of water from works) ................................................................................. 14

4.8 Surface condition ................................................................................................................................ 15

4.9 Dimensions............................................................................................................................................ 15

4.10 Mass ......................................................................................................................................................... 18

4.11 Material characteristics of pipes, fittings and accessories .................................................. 18

4.12 Coatings for pipes, fittings and accessories ............................................................................... 18

4.13 Joints ........................................................................................................................................................ 20

4.14 Grip collars ............................................................................................................................................ 22

4.15 Characteristics for buried systems ............................................................................................... 23

4.16 Characteristics for rainwater systems installed outside buildings .................................. 24

4.17 Characteristics for Systems under vacuum ............................................................................... 24

4.18 Marking .................................................................................................................................................. 24

4.19 Interconnection ................................................................................................................................... 25

5 Testing, assessment and sampling methods ............................................................................. 25

5.1 Surface condition ................................................................................................................................ 25

5.2 Dimensions............................................................................................................................................ 25

5.3 Masses ..................................................................................................................................................... 26

5.4 Tensile strength of pipes and fittings .......................................................................................... 27

5.5 Brinell hardness .................................................................................................................................. 29

5.6 Ring crush test for grey cast iron pipes ...................................................................................... 29

5.7 Coatings .................................................................................................................................................. 30

5.8 Water tightness test for fittings with access or door ............................................................. 33

5.9 Joints ........................................................................................................................................................ 34

5.10 Grip collars ............................................................................................................................................ 39

5.11 Buried Kits ............................................................................................................................................. 40

5.12 Rainwater Kits installed outside buildings ............................................................................... 40

5.13 Kits under vacuum ............................................................................................................................. 40

5.14 Marking .................................................................................................................................................. 40

5.15 Impact test ............................................................................................................................................. 41

6 Assessment and verification of constancy of performance - AVCP ................................... 42

6.1 General.................................................................................................................................................... 42

6.2 Type testing ........................................................................................................................................... 42

6.3 Factory production control (FPC) ................................................................................................. 48

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Annex A (informative) Other dimensions of pipes, fittings and accessories for buried kits 55

Annex B (informative) Other dimensions of pipes, fittings and accessories for rainwater

kits to be installed outside buildings .......................................................................................... 56

Annex C (informative) Field of use for buried pipes and fittings, characteristics of soils,

load-bearing capacity ........................................................................................................................ 57

C.1 Field of use, characteristics of soils .............................................................................................. 57

Annex D (informative) General information on some product properties ................................ 58

D.1 Mechanical resistance and stability ............................................................................................. 58

D.2 Safety in case of fire ........................................................................................................................... 58

D.3 Hygiene, health and environment ................................................................................................ 58

D.4 Noise protection .................................................................................................................................. 58

Annex E (normative) Method of calculation of gross calorific potential of external coatings

for the range of products ................................................................................................................. 59

Annex F (normative) Mounting and fixing conditions for Single Burning Item test ............... 60

Annex ZA (informative) Relationship of this European Standard with Regulation (EU)

No.305/2011 ........................................................................................................................................ 63

ZA.1 Scope and relevant characteristics .............................................................................................. 63

ZA.2 System of Assessment and Verification of Constancy of Performance (AVCP) ............ 67

ZA.3 Assignment of AVCP tasks ............................................................................................................... 67

Bibliography ....................................................................................................................................................... 69

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prEN 877:2019 (E)
European foreword

This document (prEN 877:2019) has been prepared by Technical Committee CEN/TC 203 “Cast iron

pipes, fittings and their joints”, the secretariat of which is held by AFNOR (in cooperation with CEN/TC

165).
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 877:1999.

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.

It is one of a series of standards for cast iron products for pipelines for various applications.

It deals with subjects covered by the International Standard ISO 6594. The major difference is the

inclusion of requirements for joints and for product performance.

This standard is in conformity with the general requirements already established by CEN/TC 165 in the

field of waste water engineering, as required by EN 476.
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1 Scope

This document specifies product characteristics, test/assessment methods and of how to express

test/assessment results. Cast iron pipelines kits are usually composed by cast iron pipes, fittings, joints

and accessories.

This document covers the range of nominal diameter from DN /40 to DN 600 inclusive.

The cast iron includes grey cast iron and ductile cast iron.

The roof gullies used for siphonic systems are outside the scope of this standard.

Sewerage applications are outside the scope of this standard.

It is intended to be used for the construction of gravity or vacuum discharge pressurized or unpressurised

networks installed inside and/or outside Works, above and/or below ground, in construction works.

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 598:2007+A1:2009, Ductile iron pipes, fittings, accessories and their joints for sewerage applications —

Requirements and test methods

EN 681-1, Elastomeric seals — Materials requirements for pipe joint seals used in water and drainage

applications — Part 1: Vulcanized rubber
EN 10088-1, Stainless steels — Part 1: List of stainless steels

EN 10088-2, Stainless steels — Part 2: Technical delivery conditions for sheet/plate and strip of corrosion

resisting steels for general purposes

EN 10088-3, Stainless steels — Part 3: Technical delivery conditions for semi-finished products, bars, rods,

wire, sections and bright products of corrosion resisting steels for general purposes

EN 10088-4, Stainless steels — Part 4: Technical delivery conditions for sheet/plate and strip of corrosion

resisting steels for construction purposes

EN 10088-5, Stainless steels — Part 5: Technical delivery conditions for bars, rods, wire, sections and bright

products of corrosion resisting steels for construction purposes
EN 10204, Metallic products — Types of inspection documents

EN 13501-1:2007+A1:2009, Fire classification of construction products and building elements — Part 1:

Classification using data from reaction to fire tests

EN 13823:2010+A1:2014, Reaction to fire tests for building products — Building products excluding

floorings exposed to the thermal attack by a single burning item

EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws

and studs with specified property classes — Coarse thread and fine pitch thread (ISO 898-1)

EN ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with

specified property classes — Coarse thread and fine pitch thread (ISO 898-2)
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EN ISO 1514, Paints and varnishes — Standard panels for testing (ISO 1514)

EN ISO 1716, Reaction to fire tests for products — Determination of the gross heat of combustion (calorific

value) (ISO 1716)
EN ISO 2409, Paints and varnishes — Cross-cut test (ISO 2409)

EN ISO 2808:2007, Paints and varnishes — Determination of film thickness (ISO 2808:2007)

EN ISO 2812-1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in

liquids other than water (ISO 2812-1)

EN ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners — Part 1: Bolts, screws

and studs (ISO 3506-1)

EN ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners — Part 2: Nuts (ISO

3506-2)

EN ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity

and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of

blistering (ISO 4628-2)

EN ISO 4628-3, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity

and size of defects, and of intensity of uniform changes in appearance — Part 3: Assessment of degree of

rusting (ISO 4628-3)

EN ISO 6506-1:2014, Metallic materials — Brinell hardness test — Part 1: Test method (ISO 6506-1:2014)

EN ISO 6892-1:2016, Metallic materials — Tensile testing — Part 1: Method of test at room temperature

(ISO 6892-1:2016)

EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227)

EN ISO 11664-4, Colorimetry — Part 4: CIE 1976 L*a*b* Colour space (ISO 11664-4)

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)
ISO 185:2005, Grey cast irons — Classification

ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

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
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3.1
discharge system for buildings

system of pipes, fittings, accessories and joints used to collect and drain waste water and rainwater from

a building; it comprises discharge pipes, stack ventilation and rainwater pipes, installed within the limits

of a building or attached to the building. This includes pipes between the building and the inspection

chambers

Note 1 to entry: This applies to gravity or vacuum, inside and outside buildings, above and below ground.

3.2
drain

system of pipes, fittings, accessories and joints installed outside the limits of a building in order to connect

the discharge system of this building to a sewer or a septic tank
3.3
sewer

system of pipes designed to collect waste water and rainwater from buildings and surface water and to

convey them to the point of disposal or treatment
3.4
cast iron
alloy of iron and carbon in which graphite can be present in different forms
3.5
kit

kit is a construction product placed on the market by a single manufacturer as a set of at least two

separate components that need to be put together to be incorporated in the construction work

Note 1 to entry: The wording Cast iron pipes systems is here in this standard equivalent to Cast Iron pipes kits.

3.6
pipe

pipe is a kit component casting of uniform bore, straight in axis, normally having plain ends but which

can also be socketed
3.7
fitting

fitting is a kit component in cast iron which allows a deviation, a change of direction or diameter,

including access elements and traps
3.8
coupling

coupling is a kit component. It is a Jointing element for pipes and/or fittings subjected to internal or

external pressure
3.9
gasket
gasket is a kit component providing sealing function to joints
3.10
clamping

clamping is a kit component, a Securing element for pipes and/or fittings subjected to internal pressure,

providing axial restraint to the end thrust arising from a change of direction, blank end etc., e.g. grip

collars
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3.11
grip collars

grip collar is a kit component providing a mechanical reinforcement to joints as it is mounted over the

joints
3.12
joint

connection between the ends of pipes and/or fittings, including the coupling or clamping component,

with sealing effected by elastomeric gasket(s). Joint is a kit as soon as it is an assembly of several kit

components as coupling, clamping or gaskets
3.13
accessory

accessory is a kit component, any element used in a network, e.g. for maintenance or inspection reasons

3.14
nominal size (DN)

alphanumerical designation of size for components of a pipework system, to be used for reference

purposes, which comprises the letters DN followed by a dimensionless which is indirectly related to the

physical size, in millimetres, of the bore or outside diameter of the end connections

[SOURCE: EN ISO 6708:1995]
Note 1 to entry: In this standard, it is the bore.
3.15
length
effective length of a pipe or fitting

Note 1 to entry: For double spigot pipes and fittings, the effective length is equal to the overall length. For spigot

and socket pipes and fittings, the effective length is equal to the overall length minus the spigot insertion depth as

given by the manufacturer.
3.16
range of products

design system produced by one manufacturer for which the test results for one or more characteristics

from any one product within the range are valid for all other products within this range

3.17
cast iron pipe systems under vacuum
siphonic system for draining rainwater and vacuum system for waste waters
3.18
design systems

collection of components from which a “kit” may be created for subsequent installation in the works

Note 1 to entry: A design system may, for example, be presented in a supplier’s catalogue, from which the

purchaser may make a choice. A design system may give rise to one or many different “kits”, the system itself cannot

be bought.
3.19
assembled system
kit after it has been installed in the works
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Note 1 to entry: An "assembled system" may be made up only of the "kit" or it may comprise the "kit" assembled

with one or more other products which may or may not themselves be construction products.

4 Cast Iron Pipe systems characteristics
4.1 Crushing strength (only for grey cast iron)

Pipes, fittings and accessories shall have the minimal crushing strength given in Table 7.

4.2 Impact resistance

This test aims to evaluate the impact resistance of cast iron pipes to guarantee its integrity during

transport and handling.

After the test samples shall show neither visible cracks nor visible breaks, to be declared impact resistant.

Samples with a minimum wall thickness > 4.0mm are declared impact resistant without need to be tested.

A range of product including different DN is declared impact resistant from the moment each DN sample

is declared impact resistant.
Test device, and load are described in 5.15.
4.3 Tightness: gas and liquid
4.3.1 Lengths of fittings and sealing zone

Lengths of fittings shall be given in the manufacturers’ catalogues. When measured in accordance with

5.2.7 the lengths of fittings shall be within a tolerance of + 5 mm.

The ends of the fittings shall have sealing zones straight in axis and free from marking and free from

defects which could impair the fitness for use.

The length T (see Figure 1) of this sealing zone shall comply with the values given in Table 1.

Figure 1 — Length of the sealing zone
4.3.2 Geometry of fittings and accessories

The geometry of fittings and accessories is not part of this standard. Fittings and accessories of geometry

presently used in various countries are in conformity with this standard as long as they comply with all

other technical requirements of this standard.
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Table 1 — Sealing zone of fittings
DN Length T of sealing zone a
Lower deviation on T
40 30
50 30
70 35
75 35 - 5
100 40
125 45
150 50
200 60
250 70
300 80
400 80 - 4
500 80
600 80

Upper deviations are not given and sealing zones with a length greater than T are permitted.

4.3.3 Water Tightness
4.3.3.1 Water tightness of pipes and fittings
4.3.3.1.1 Water tightness of pipes

Pipes manufactured with cast iron in conformity with this standard (material, dimensions, etc.) shall

withstand the pressure given in Table 2. This can be demonstrated by the following calculation.

20××eR
DS×
where
e is the minimum pipe wall thickness, in millimetres;
D is the mean pipe diameter (DE – e), in millimetres;
DE is the nominal pipe external diameter (see Table 6), in millimetres;
R is the minimum tensile strength of cast iron, in Megapascals.

(420 MPa for spheroidal graphite cast iron and 200 MPa for grey cast iron; see 4.11.2);

S is a safety factor of 3.

For a DN 100 pipe in grey cast iron, the internal pressure strength is more than 35 bars.

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4.3.3.1.2 Water tightness of fittings
4.3.3.1.2.1 Fittings without access or door

Fittings without access or door manufactured with cast iron in conformity with this standard (material,

dimensions, etc.) shall withstand the pressure given in Table 2 and the demonstration used for pipes can

work for these fittings.
4.3.3.1.2.2 Fittings with access or door

When tested in accordance with 5.8, fittings with access or door shall exhibit no visible leakage from the

access or door when subjected to the internal hydrostatic test pressure given in Table 2.

Table 2 — Water tightness of fittings with access or door - performance requirements

Internal test pressure in bar
DN ≤ DN 200 DN > DN 200
a a
0 to 5 0 to 3

0 to 0,5 bar water pressure for fittings which will only carry limited pressures because of their

intended use and installation.
4.3.3.2 Water tightness of Joints
4.3.3.2.1 General

When tested in accordance with 5.9.4 and 5.9.5, on test apparatus preventing any excessive axial

displacement and subjected to the test conditions and hydrostatic pressures given in Table 4, the joints

shall exhibit no visible leakage.

Table 3 specifies the hydrostatic test pressures for the following test conditions:

a) joint with pipes aligned;
b) joint with pipes deflected to an angle of at least:
3° for nominal sizes up to and including DN 200;
1°45’ for nominal sizes greater than DN 200;

c) joint subject to a shear force of at least 10 DN in newtons, with pipes aligned.

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Table 3 — Water tightness of joints - performance requirements
Test condition Hydrostatic test pressure in bar
DN ≤ DN 200 DN > DN 200
internal external internal external
a b c a b c
a) aligned
0 to 5 0 to 0,5 0 to 3 0 to 0,5
a a
b) deflected -- --
0 to 5 0 to 3
a b a b
c) subject to shear force -- --
0 to 1 0 to 1

0 to 0,5 bar water pressure for joints which will only carry limited pressures because of their intended

use and installation; 0 to 0,1 bar water pressure for joints connecting to sanitary ware, e.g. WC, washbasin

and non-pressurized gravity flow.
Applicable to socketed joints only when they are to be buried.

Does not apply to nominal sizes less than DN 100 and does not apply to joints connecting to sanitary ware,

e.g. WC, washbasin.
4.3.3.2.2 Water tightness for buried systems

For joints which are used exclusively for buried kits, the internal hydrostatic test pressure specified in

Table 3 lines a) and b) may be limited to 1 bar. This may limit to 1 bar also the test pressure specified in

Table 4 for buried grip collars.
4.3.3.2.3 Water Tightness for rainwater systems installed outside buildings

Joints shall be watertight at least to non-pressurised gravity flow. See note a) in Table 3.

4.3.3.3 Resistance to end thrust with grip collars

When tested in accordance with 5.10.3, on test apparatus preventing any excessive axial displacement

and subjected to the test conditions:
— joint with pipes aligned;
— internal hydrostatic pressures given in Table 4;

the grip collars shall limit the axial movement of pipes. During each stage in pressure, there shall be no

axial movement of the pipes.
Table 4 — Resistance to end thrust of grip collars - performance requirements
Test condition Internal test pressure in bar
DN ≤ DN 200 DN > DN 200
aligned 0 to 5 0 to 3
4.3.4 Air Tightness

In order to ensure a seal against odours, all joints shall be tight against positive internal air pressure of

0 mbar to 10 mbar when tested in accordance with 5.9.6.
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...

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