prEN 124-7

SLOVENSKI STANDARD
01-april-2025
Pokrovi za odtoke in jaške na voznih površinah in površinah za pešce - 7. del:
Pokrovi za odtoke in jaške iz poliamida
Gully tops and manhole tops for vehicular and pedestrian areas - Part 7: Gully tops and
manhole tops made of polyamide
Aufsätze und Abdeckungen für Verkehrsflächen - Teil 7: Aufsätze und Abdeckungen aus
Polyamid
Dispositifs de couronnement et de fermeture pour les zones de circulation utilisées par
les piétons et les véhicules - Partie 7: Dispositifs de couronnement et de fermeture en
polyamide
Ta slovenski standard je istoveten z: prEN 124-7
ICS:
93.080.30 Cestna oprema in pomožne Road equipment and
naprave installations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
January 2025
ICS 93.080.30
English Version
Gully tops and manhole tops for vehicular and pedestrian
areas - Part 7: Gully tops and manhole tops made of
polyamide
Dispositifs de couronnement et de fermeture pour les Aufsätze und Abdeckungen für Verkehrsflächen - Teil
zones de circulation utilisées par les piétons et les 7: Aufsätze und Abdeckungen aus Polyamid
véhicules - Partie 7: Dispositifs de couronnement et de
fermeture en polyamide
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 165.
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, 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, Türkiye 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
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 124-7:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Materials . 6
4.1 General. 6
4.2 Types of polyamide materials . 6
4.2.1 General. 6
4.2.2 Cast Polyamide (CP) . 6
4.2.3 Injection mouldable polyamide (IP) . 6
4.3 Requirements for polyamide materials. 7
4.3.1 General. 7
4.3.2 Conditioning procedure of polyamide products for testing . 7
4.3.3 Hardness . 10
4.3.4 Resistance to vehicle fuels . 10
4.3.5 Surface resistivity . 10
4.3.6 Weathering resistance . 10
4.3.7 UV stability . 11
4.3.8 Environmental / toxicological requirements . 12
5 Requirements . 12
5.1 Design and performance requirements . 12
5.2 Material specific characteristics for gully tops and manhole tops made of polyamide . 13
5.2.1 General. 13
5.2.2 Deflection under load . 14
5.2.3 Resistance to fatigue . 14
5.2.4 Creep resistance . 14
5.2.5 Impact resistance . 14
5.2.6 Effect of heating . 14
5.2.7 Reaction to fire. 14
5.2.8 Durability . 15
5.2.9 Dangerous substances. 16
6 Testing . 16
6.1 General. 16
6.2 Deflection under load . 16
6.3 Resistance to fatigue . 17
6.4 Creep resistance . 17
6.5 Impact resistance . 17
6.6 Effect of heating . 18
7 Marking . 19
Annex A (informative) Test of deflection under load . 20
Bibliography . 22

European foreword
This document prEN 124-7:2024 has been prepared by Technical Committee Technical Committee
CEN/TC 165 “Waste water engineering”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
The standard series EN 124 “Gully tops and manhole tops for vehicular and pedestrian areas” consists of
the following parts:
— Part 1: Definitions, classification, general principles of design, performance requirements and test
methods
— Part 2: Gully tops and manhole tops made of cast iron
— Part 3: Gully tops and manhole tops made of steel or aluminium alloy
— Part 4: Gully tops and manhole tops made of steel reinforced concrete
— Part 5: Gully tops and manhole tops made of composite materials
— Part 6: Gully tops and manhole tops made of Polypropylene (PP), Polypropylene with mineral
modifiers (PP-MD), Polyethylene (PE) or Polyvinyl-chloride (PVC-U)
— Part 7: Gully tops and manhole tops made of polyamide
— Part 700: Factory production control, third party monitoring and certification for gully tops and
manhole tops made of polyamide
1 Scope
This document applies to gully tops and manhole tops with a clear opening up to and including 1 000 mm
for installation within areas subjected to pedestrian and/or vehicular traffic.
It applies for manhole tops and gully tops of classes A 15 to D 400 made from polyamide (PA 6 and PA 6.6)
by casting or injection-moulding.
This document is only applicable in combination with EN 124-1 and prEN 124-700.
This document does not apply
— for fillings installed on site, e.g. concrete, paving blocks etc.,
— for gratings as part of prefabricated drainage channels according to EN 1433,
— to floor and roof gullies in buildings which are specified in EN 1253 (all parts) and to surface boxes.
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 124-1:2015, Gully tops and manhole tops for vehicular and pedestrian areas — Part 1: Definitions,
classification, general principles of design, performance requirements and test methods
EN 124-2:2015, Gully tops and manhole tops for vehicular and pedestrian areas — Part 2: Gully tops and
manhole tops made of cast iron
EN 124-3:2015, Gully tops and manhole tops for vehicular and pedestrian areas — Part 3: Gully tops and
manhole tops made of steel or aluminium alloys
EN 124-4:2015, Gully tops and manhole tops for vehicular and pedestrian areas — Part 4: Gully tops and
manhole tops made of steel reinforced concrete
EN 124-5:2015, Gully tops and manhole tops for vehicular and pedestrian areas — Part 5: Gully tops and
manhole tops made of composite materials
EN 124-6:2015, Gully tops and manhole tops for vehicular and pedestrian areas — Part 6: Gully tops and
manhole tops made of polypropylene (PP), polyethylene (PE) or unplasticized poly(vinyl chloride) (PVC-U)
EN 513:2018, Plastics — Poly(vinyl chloride) (PVC) based profiles — Determination of the resistance to
artificial weathering
EN 1433, Drainage channels for vehicular and pedestrian areas — Classification, design and testing
requirements, marking and evaluation of conformity
EN ISO 868:2003, Plastics and ebonite — Determination of indentation hardness by means of a durometer
(Shore hardness) (ISO 868:2003)
EN ISO 3127, Thermoplastics pipes — Determination of resistance to external blows — Round-the-clock
method(ISO 3127)
EN ISO 8256:2023, Plastics — Determination of tensile-impact strength(ISO 8256:2023)
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 175, Plastics — Methods of test for the determination of the effects of immersion in liquid chemicals
(ISO 175)
EN ISO 4892-1, Plastics — Methods of exposure to laboratory light sources — Part 1: General guidance and
requirements(ISO 4892-1)
EN ISO 4892-2:2013, Plastics — Methods of exposure to laboratory light sources — Part 2: Xenon-arc
lamps (ISO 4892-2:2013)
EN ISO 4892-3, Plastics — Methods of exposure to laboratory light sources — Part 3: Fluorescent UV lamps
(ISO 4892-3)
ISO 2878, Rubber, vulcanized or thermoplastic — Antistatic and conductive products — Determination of
electrical resistance
EN ISO 291:2008, Plastics — Standard atmospheres for conditioning and testing(ISO 291:2008)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 124-1 and the following apply.
ISO and IEC maintain terminology 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
polyamide
PA
polymers made of macromolecules having in the chain recurring amide linkages which are joined to
aliphatic or cycloaliphatic or partial aromatic units
Note 1 to entry: Polyamides are generally defined in EN ISO 16396. Further specifications see 3.2 and 3.3.
3.2
cast polyamide
CP
type of polyamide produced by an anionic polymerization process in which a melted solution of monomer
and up to 20 % modifiers (e.g. stabilisers, colour pigments, demoulding agents, catalysts, additives) is
transformed in heated moulds into polymeric material under the melting temperature of the polymer in
a mould
Note 1 to entry: Caprolactam is an organic substance which is used as monomer in anionic polymerization to
obtain PA 6.
3.3
injection mouldable polyamide
IP
granules of compounded thermoplastic polyamide (PA) containing up to 60 % (by mass) of glass fibres
and up to 5 % of modifiers (e.g. stabilisers, colour pigments, demoulding agents) which can be processed
by injection moulding
3.4
conditioning
preparation of a part or sample which is required for certain tests according to this document
Note 1 to entry: Further specifications see 4.3.1 and 4.3.3.
4 Materials
4.1 General
Materials in accordance with this document shall be moulded as a single structure. They shall be
produced by using suitably controlled automatic processes that produce a single structure and that do
not contain multiple pieces bonded together.
The inclusion of metal components that contribute to the structural performance of the manhole top or
gully top shall not be permitted.
Components such as metal key and lifting housing can be incorporated within the structure but shall not
be part of the structural design. The material used for any metallic fixing shall be resistant to corrosion.
Any element made of the materials specified in 4.2 can be used in combination with elements of materials
specified in EN 124-2:2015, EN 124-3:2015, EN 124-4:2015, EN 124-5:2015 or EN 124-6:2015. In such
cases the manhole tops or gully tops shall comply with the relevant design and performance and testing
requirements as listed in Table 3
In addition, elements shall comply with the requirements for the material related EN 124-2, EN 124-3,
EN 124-4, EN 124-5 or EN 124-6 as applicable. Each element shall be marked accordingly. The load class
to be declared for the combined product shall be restricted to the lower class determined for any
constituent element according to the relevant part of EN 124 series.
4.2 Types of polyamide materials
4.2.1 General
Depending on the production process, the polyamide materials shall be distinguished as cast polyamide
(CP) or injection mouldable polyamide (IP).
4.2.2 Cast Polyamide (CP)
Manhole tops and gully tops made of cast polyamide shall be produced by anionic polymerization of flake
or melted caprolactam. CP manufacturers of different materials shall declare that their products contain
at least 80 % of PA 6 made by anionic polymerization of caprolactam.
Cast polyamide shall not contain reinforcing fibres.
4.2.3 Injection mouldable polyamide (IP)
Manhole tops and gully tops made of injection mouldable polyamide shall be made by injection moulding
thermoplastic PA 6 or PA 6.6 granules. Polyamide for injection moulding can contain reinforcing fibres
encapsulated within the matrix.
4.3 Requirements for polyamide materials
4.3.1 General
Some properties like Young’s modulus, material strength, tensile strain and toughness are affected by the
humidity within the product. Therefore, some tests will require a defined conditioning, others may be
carried out on part which were just manufactured (these are always dry).
4.3.2 Conditioning procedure of polyamide products for testing
Elements to be tested shall be conditioned to water absorption, aiming to reach the equilibrium moisture
content in standard atmosphere (23 ± 2) °C/ (50 ± 1) % relative humidity and a sufficiently
homogeneous distribution of water-molecules within the polymer.
Part testing (type testing) shall be carried out latest 4 weeks after completing conditioning using either
Method A or Method B below. The part shall be stored in an environment not more than 30 °C and without
direct exposure to sun light or other heating sources. These storage conditions also apply to potential
transport to a testing institute and storage there.
Definitions:
V is the volume of the cover or grating [mm ]
S is the total surface of the cover or grating [mm ]
h is the equivalent thickness of the cover or grating [mm]
t is the maximum initial time step in hours (Method A)
t is the conditioning time in days (Method B)
t time step in hours in days (Method B)
C is 0,5 [hours/mm ]
M is the target moisture content [%]
M is 3,0 % for PA6 and 2,8 % for PA6.6
GF is the Glass Fibres Content [%]
Method A – Accelerated procedure
APPARATUS:
Water tank heated at controlled temperature of (60 ± 2) °C
Balance, accurate to 0,1 % of the element’s weight
PROCEDURE:
Weigh the element to be conditioned as manufactured, no later than 15 days from date of manufacturing.
If metal inserts are used, subtract their mass and determine the mass (m) of the Polyamide.
Determine the equivalent thickness h [mm] of the element to be tested using the formula:
h = 2V/S (1)
Define maximum time step t , which is a function of the average wall thickness:
t =C ∙ h
Water absorption shall be measured as percentage of mass increase relative to dry polyamide. The
following table indicates the conditioning values in terms of mass increase of the polyamide mass m to
achieve after conditioning:
Table 1 — Target equilibrium moisture content after conditioning
Glass Fibres Content
0 % 10 % 20 % 30 % 40 % 50 %
PA6 (3,0 ± 0,1) (2,7 ± 0,1) (2,4 ± 0,1) (2,1 ± 0,1) (1,8 ± 0,1) (1,5 ± 0,1)
% % % % % %
PA6.6 (2,8 ± 0,1) (2,5 ± 0,1) (2,2 ± 0,1) (2,0 ± 0,1) (1,7 ± 0,1)% (1,4 ± 0,1)
% % % % %
Cast PA (3,0 ± 0,1) n. a. n. a. n. a. n. a. n. a.
%
The target equilibrium moisture content after conditioning for glass fibre content outside the Table 1
values is calculated by:
M = M ∙ (1 – GF) (2)
Step 1 - Absorption
This step is aiming to raise the moisture content by immersion in water at (60 ± 2) °C. The duration of
absorption will depend on the equivalent thickness of the element, and type of Polyamide. The absorption
step is aiming to achieve the target mass increase according to Table 1 Diagrams in Figure 1 provide
guidance for the expected duration of the absorption step.
Immerse the element in a water tank kept at constant temperature of (60 ± 2) °C. Weigh the element at
regular time steps ≤ t and plot values to predict the absorption duration to reach the target. Before every
weight measurement water should be removed from the surface using a dry cloth. Once the target mass
increase M (%) is reached proceed to step 2.
Values in Table 1or in Formula (1) are intended as minimum thresholds, mass increase can exceed the
values in the table.
Key
PA 6 or CP at (60 ± 2)°C
Figure 1 — Estimated duration of conditioning in water at 60°C
Step 2 – Normalization
This step is aiming to achieve uniform distribution of humidity across the element’s thickness.
Remove water from the surface. Put the element inside a sealed polyethylene bag. Keep the element at
(60 ± 2) °C for the same total period of time as per step 1.
Upon completion of step 2 conditioning is complete.
Method B – Climate Chamber
NOTE The following method is related to EN ISO 1110 and adjusted for the material requirements for products
according to this document.
APPARATUS:
Cabinet, with closed air circulation by a fan, capable of maintaining temperature of 70 °C within a
tolerance of ± 1 °C and a relative humidity of (62 ± 1) %
PROCEDURE
Place the element to be tested in the preheated cabinet by suitable means to maximize the surface
exposure to the surrounding atmosphere.
After conditioning for a period of time t (days) ≥ h /3 remove the element from the cabinet, allow it to
cool for 1 hour in standard atmosphere 23 °C/50 % relative humidity and weigh. Thereafter, continue
the accelerated conditioning procedure in the cabinet at 70 °C and repeat the weighing, as above, at
intervals of time t (days) ≥ h /8. The time intervals t and t shall not be less than 1 day.
3 2 3
When three consecutive weighings lie within a tolerance of 0,1 %, the conditioning is assumed to be
completed (see note). Place the element in standard atmosphere 23 °C/50 % RH for at least 1 h before
testing
NOTE Under these conditions the element will have acquired a moisture content equal at least 95 % of the
equilibrium value. A prolonged of conditioning beyond this point will have no noticeable effect on the properties of
the element.
4.3.3 Hardness
For CP, the mean Shore D hardness shall be measured at every lot of material used, inorder to ensure
correct composition at the factory. It shall be equal to or greater than 50 ShD when tested in accordance
with EN ISO 868:2003 on the top surface of the product.
4.3.4 Resistance to vehicle fuels
A finished product (cover or grating) shall be conditioned according to EN ISO 175 in either
— a solution of 60 % volume toluene, 40 % volume n-heptane or
— diesel
at (23 ± 2) °C for (168 ± 2) h.
At the end of the conditioning the manhole top or gully top shall meet the requirements of permanent set
specified in EN 124-1:2015, Table 5 and of the test load according EN 124-1:2015, Table 4. There shall be
no visible evidence of cracking after the test.
4.3.5 Surface resistivity
In the event that safety considerations require that a manhole top or gully top is capable of dispersing a
static electrical charge, the value of surface resistivity shall be less than 1 × 10 Ohms.
The test shall be carried out according to ISO 2878 where the outer surface of a manhole top shall be
tested at a point which provides a flat surface of sufficient surface area to accommodate the electrodes to
two areas in accordance with ISO 2878.
NOTE A typical application is the forecourt of a refuelling station.
4.3.6 Weathering resistance
Manhole tops and gully tops shall be resistant against artificial weathering when tested in accordance
with Table 2 Upon completion of the artificial weathering resistance test, the coupons shall meet the
requirements defined in Table 2.
UV resistant materials meeting the requirements of 4.3.7 shall be deemed to comply with Table 2 without
testing.
The test can be carried out by the material supplier.
Table 2 — Artificial weathering resist
...