SIST EN 1253-7:2023

Gullies for buildings - Part 7: Trapped floor gullies with mechanical closure

This document classifies floor gullies for domestic waste water for use inside buildings, gives guidance for places of installation and specifies requirements for the construction, design, performance and marking of factory made gullies for buildings, irrespective of the material, for use in drainage systems requiring a trap with a mechanical closure (referred to as floor gullies).
NOTE   Floor gullies with a depth of water seal less than 50 mm are not covered by EN 1253-1, EN 1253-7 and EN 1253-8.
These products are intended to be installed where both conditions below are fulfilled:
-   the building does not exceed a ground-floor and three floors above;
-   infrequent use could result in a water seal evaporating.

Abläufe für Gebäude - Teil 7: Bodenabläufe mit mechanischem Geruchverschluss

Dieses Dokument klassifiziert Bodenabläufe für häusliches Abwasser für den Einsatz innerhalb von Gebäuden, gibt eine Anleitung hinsichtlich der Einbaustellen und legt Anforderungen an die Konstruktion, Ausführung, Funktion und Kennzeichnung von werkmäßig hergestellten Abläufen für Gebäude, unabhängig vom Werkstoff, zur Verwendung in Entwässerungsanlagen mit mechanischem Geruchverschluss (im Folgenden als Bodenabläufe bezeichnet) fest.
ANMERKUNG   Bodenabläufe mit einer Sperrwasserhöhe von weniger als 50 mm werden in EN 1253 1, EN 1253 7 und EN 1253 8 nicht behandelt.
Diese Produkte sind für den Einbau unter den folgenden beiden Bedingungen bestimmt:
—   das Gebäude weist neben dem Erdgeschoss nicht mehr als drei Stockwerke auf;
—   durch seltene Nutzung könnte das Sperrwasser verdunsten.

Avaloirs et siphons pour bâtiments - Partie 7: Siphons de sol avec système d'obturation mécanique

Le présent document classifie les siphons de sol utilisés à l’intérieur des bâtiments pour les eaux usées domestiques, fournit des recommandations pour les lieux d’installation et spécifie les exigences concernant la construction, la conception, les performances et le marquage des siphons de sol pour bâtiments fabriqués en usine, indépendamment des matériaux, destinés à être utilisés dans les réseaux d’évacuation nécessitant un siphon de sol avec un obturateur mécanique (appelés « siphons de sol » dans le reste du document).
NOTE   Les siphons de sol ayant une profondeur de garde d’eau inférieure à 50 mm ne sont pas traités dans l’EN 1253-1, l’EN 1253-7 et l’EN 1253-8.
Ces produits sont destinés à être installés lorsque les deux conditions ci-dessous sont remplies :
-   la hauteur du bâtiment ne dépasse pas un rez-de-chaussée surmonté de trois étages ;
-   un usage peu fréquent pourrait entraîner une évaporation de la garde d’eau.

Odtoki v stavbah - 7. del: Talni odtoki z mehansko smradno zaporo

Ta dokument razvršča talne odtoke v stavbah, vsebuje napotke za mesta postavitve ter določa zahteve za gradnjo, projektiranje, učinkovitost in označevanje tovarniško izdelanih odtokov v stavbah, ne glede na material, za uporabo v drenažnih sistemih, pri katerih je potrebna mehanska smradna zapora (imenovani talni odtoki).
Opomba: Talni odtoki z mehansko smradno zaporo niso zajeti v 1. delu, 6. delu, 8. delu.
Ti izdelki so namenjeni za namestitev na mestih:
– kjer stavba ne obsega več kot pritličja in treh nadstropij;
– kjer bi neredna uporaba lahko povzročila izhlapevanje skozi vodno tesnilo.

General Information

• Status: Published
• Public Enquiry End Date: 14-Sep-2020
• Publication Date: 06-Dec-2022
• ICS: 91.140.80 - Drainage systems
• Technical Committee: IOVO - Water supply and waste water engineering
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2022
• Due Date: 05-Feb-2023
• Completion Date: 07-Dec-2022
• Ref Project: EN 1253-7:2022 - Gullies for buildings - Part 7: Trapped floor gullies with mechanical closure

Overview - EN 1253-7:2022 (Gullies for buildings, Part 7)

EN 1253-7:2022 specifies requirements for trapped floor gullies with mechanical closure used for domestic wastewater inside buildings. The standard classifies these factory-made floor gullies, gives guidance on places of installation, and sets out requirements for construction, design, performance, marking and conformity testing - irrespective of material. It is intended for situations where a water seal might evaporate (infrequent use) and for buildings up to ground floor plus three upper floors.

Key topics and technical requirements

This part of the EN 1253 series addresses the following technical areas:

• Classification and definitions for trapped floor gullies, frames, gratings, bodies, extensions and mechanical closures.
• Design and construction: requirements that ensure fixed installation, no movement between body and floor, removable closures for cleaning, and prevention of floating or displacement.
• Grating and aperture requirements: apertures and clear openings are specified, with tighter limits in barefoot areas.
• Mechanical closure performance: mechanical closures are required to resist positive pressure and to be removable for maintenance (the standard includes pressure-resistance testing).
• Blockage prevention and cleanability: access for cleaning, clogging tests and sediment handling are covered.
• Materials and thermal behaviour: suitability of materials and thermal resistance tests, including requirements for use with floor coverings and liquid-applied membranes.
• Tightness and watertightness: odour-tightness and watertightness of bodies and extensions are specified.
• Mechanical strength and loading: tests for loading strength, clamping rings and installation-specific strength requirements.
• Flow rates and hydraulic testing, marking, and evaluation of conformity (reference to EN 1253-3 for conformity procedures).

Practical applications

• Use in residential and small multi-storey buildings where traps may dry out due to infrequent use.
• Installed where a trap with a mechanical closure is required instead of (or in addition to) a water seal.
• Typical locations: wet rooms, utility areas, internal drainage runs receiving domestic wastewater (kitchens, bathrooms, service rooms) - installed according to manufacturer’s instructions and building requirements.

Who uses this standard

• Manufacturers of floor gullies and drainage components
• Specifiers, architects and building services engineers
• Installers and plumbing contractors
• Test laboratories and conformity assessors
• Building inspectors and facility managers responsible for internal drainage and odour control

Related standards

• EN 1253 series (Parts 1–8) - other gully types and conformity evaluation
• EN 1253-3 - Evaluation of conformity
• EN 476 and EN 16323 - general component and terminology references

Keywords: EN 1253-7:2022, trapped floor gullies, mechanical closure, floor gully standard, domestic wastewater drainage, gully design, odour-tightness, drain grating requirements.

Standards Content (Sample)

SLOVENSKI STANDARD
01-januar-2023
Odtoki v stavbah - 7. del: Talni odtoki z mehansko smradno zaporo
Gullies for buildings - Part 7: Trapped floor gullies with mechanical closure
Abläufe für Gebäude - Teil 7: Bodenabläufe mit mechanischem Geruchverschluss
Avaloirs et siphons pour bâtiments - Partie 7: Siphons de sol avec système d'obturation
mécanique
Ta slovenski standard je istoveten z: EN 1253-7:2022
ICS:
91.140.80 Drenažni sistemi Drainage systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 1253-7
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 91.140.80
English Version
Gullies for buildings - Part 7: Trapped floor gullies with
mechanical closure
Avaloirs et siphons pour bâtiments - Partie 7 : Siphons Abläufe für Gebäude - Teil 7: Bodenabläufe mit
de sol avec obturateur mécanique mechanischem Geruchverschluss
This European Standard was approved by CEN on 26 September 2022.

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, Türkiye 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1253-7:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Design and construction . 8
4.1 General . 8
4.2 Appearance . 8
4.3 Apertures in gratings . 8
4.4 Resistance of trap with mechanical closure to pressure . 9
4.4.1 Requirements . 9
4.4.2 Test method . 9
4.5 Blockage prevention . 10
4.5.1 Access for cleaning . 10
4.5.2 Clogging test . 11
4.6 Places of installation . 13
4.7 Materials . 13
4.8 Thermal behaviour of floor gullies . 13
4.8.1 General . 13
4.8.2 Requirements . 13
4.8.3 Test method . 13
4.8.4 Additional test for floor gullies for use with sheet floor coverings and liquid applied
membranes . 14
4.9 Tightness . 15
4.9.1 Odour-tightness . 15
4.9.2 Watertightness of bodies . 16
4.9.3 Watertightness of extensions . 16
4.10 Mechanical strength . 17
4.10.1 Loading strength. 17
4.10.2 Clamping ring strength . 19
4.10.3 Additional mechanical strength according to the installation . 19
4.10.4 Floor gullies for use with liquid applied membranes . 23
4.11 Flow rates . 23
4.11.1 Requirements . 23
4.11.2 Test method . 24
4.11.3 Test arrangement . 24
5 Allocation and sequence of tests . 25
6 Marking . 27
7 Evaluation of conformity . 28
Annex A (normative) Examples of top view of the positioning of shape of test blocks applied
on the gratings . 29
Annex B (normative) Test solution . 31
Bibliography . 33

European foreword
This document (EN 1253-7:2022) has been prepared by Technical Committee CEN/TC 165 “Waste water
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 April 2023, and conflicting national standards shall be
withdrawn at the latest by April 2023.
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.
Within its program of work, Technical Committee CEN/TC 165 requested CEN/TC 165/WG 11 “Gratings,
covers and other ancillary components for use inside buildings” to prepare the following standard:
EN 1253-7 Trapped floor gullies with mechanical closure.
The EN 1253 series under the main title Gullies for buildings will actually consist of the following parts:
— Part 1: Trapped floor gullies with a depth water seal of at least 50 mm
— Part 2: Roof drains and floor gullies without trap
— Part 3: Evaluation of conformity
— Part 4: Access covers
— Part 5: Gullies with light liquids closure
— Part 6: Trapped floor gullies with a depth of water seal less than 50 mm
— Part 7: Trapped floor gullies with mechanical closure
— Part 8: Trapped floor gullies with combined mechanical closure and water seal.
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, Türkiye and the United
Kingdom.
1 Scope
This document classifies floor gullies for domestic waste water for use inside buildings, gives guidance
for places of installation and specifies requirements for the construction, design, performance and
marking of factory made gullies for buildings, irrespective of the material, for use in drainage systems
requiring a trap with a mechanical closure (referred to as floor gullies).
NOTE Floor gullies with a depth of water seal less than 50 mm are not covered by EN 1253-1, EN 1253-7 and
EN 1253-8.
These products are intended to be installed where both conditions below are fulfilled:
— the building does not exceed a ground-floor and three floors above;
— infrequent use could result in a water seal evaporating.
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 476, General requirements for components used in drains and sewers
EN 1253-3, Gullies for buildings — Part 3: Evaluation of conformity
EN 16323, Glossary of wastewater engineering terms
3 Terms and definitions
For the purposes of this document, the definitions of EN 16323 and the following terms and definitions
apply.
3.1
trapped floor gully
discharge fitting the top of which is a grating or cover capable of installation at ground or floor level,
intended to receive wastewater either through apertures in the grating and/or channels joined to the
body of the gully and to drain that wastewater through the outlet
Note 1 to entry: Four generic types of floor gullies are shown in Figure 1.
Note 2 to entry: In this document, the term "trapped floor gully” includes linear products, such as channel drains.
a) Floor gully with flange for bonding b) Floor gully with flange for clamping
waterproofing membranes (example) membranes (fixed and loose flange)
(example)
c) Floor gully with flange for clamping d) Channel drain with flange for bonding
flexible flooring (e.g. PVC flooring) (example) liquid applied membranes (example)
Key
1 finished floor 9 sediment bucket
2 grating/cover 10 connecting flange with counter flange
3 extension a fixed flange
4 mechanical closure b loose flange
5 outlet 11 flange for clamping flexible flooring with a clamping ring
6 body 12 seal
7 weep hole 13 flange for bonding liquid applied membrane ring
8 flange for bonding membranes
Figure 1 — Examples of four generic types of floor gullies according to this standard
3.2
grating
removable component with apertures which permits the discharge of water
3.3
frame
support for a grating or cover which is connected to a body either directly or by means of a membrane
clamping ring or an extension
3.4
cover
removable part of an access cover which covers the opening
3.5
body
part of a floor gully below or in the floor on which the grating/frame/extension is mounted, and to which
the pipework is connected
3.6
extension
component used to adjust the height of a grating or cover above a body
3.7
joint
connection between the adjacent ends of two components including the means of sealing
3.8
membrane clamping ring
component used to clamp a membrane or a sheet floor covering to a body or extension
3.9
connecting flange
separate or an integral part of a body or of an extension which receives a membrane or sheet floor
covering
3.10
external diameter
OD
mean external diameter of the pipe at any cross section
3.11
internal diameter
ID
mean internal diameter of the pipe at any cross section
3.12
trap with mechanical closure
removable part of the body which prevents the passage of foul air from the outlet to the inlet by means
of mechanical closure system
3.13
domestic wastewater
water polluted by the human life, including water discharged from kitchens, laundry rooms, lavatories,
bathrooms, toilets and similar facilities
[SOURCE: EN 16323:2014, 2.1.2.3]
3.14
sheet floor covering
flexible watertight finished layer for floors affixed to the flange by bonding, welding and/or by means of
a clamping ring
3.15
membrane
watertight and damp proof layer attached to the floor gully either in the floor or on the floor
3.16
head of water
depth h of water over the frame of the floor gully
Note 1 to entry: See Figure 2.
Note 2 to entry: For floor gullies without frame, the depth of water is the lowest level over the finished floor.

Key
h head of water
Figure 2 — Head of water for floor gullies
3.17
outlet
male or female connection to the discharge pipe
3.18
nominal size
DN
numerical indication of size which is a convenient integer approximately equal to the internal
diameter (DN/ID) or the external diameter (DN/OD) in millimetres
3.19
clear opening
CO
diameter of the largest circle that can be inscribed within the unsupported area of the grating
3.20
test load
specified load which a component is required to withstand
3.21
liquid applied waterproofing kit
particular combination of a defined set of components to be installed in liquid form for waterproofing
Note 1 to entry: The liquid applied waterproofing kit is usually a paste-like composite material or a combination
of separate materials that can be poured, spread or sprayed on the subsurface by brush, roller or similar suitable
applicator.
4 Design and construction
4.1 General
Floor gullies shall be capable of being connected to the pipework system covered by relevant European
Standards, and, when installed in accordance with the manufacturer’s instructions, shall form an integral
part of the building. There shall be no movement possible between the body and the floor, which would
impair the functioning of the installed gully.
The upper surfaces of frame and grating shall be flush. When in position, it shall not be possible for
gratings and covers to be inadvertently dislodged from the frame, but they shall be easy to be released
e.g. for maintenance and cleaning.
Traps shall be prevented, by design features such as fixings or weights, from floating or displacement.
The functional part of a mechanical closure must be removable and allow access to clean the outlet pipe.
Floor gullies and their components shall be resistant to all mechanical and thermal requirements of
application.
Floor gullies shall be designed without side inlet.
NOTE Products with side inlet are described in EN 1253-1.
Floor gullies shall be delivered with installation instructions.
All pipe joints to and from the floor gully shall be designed to be watertight in accordance with EN 476.
4.2 Appearance
Internal and external surfaces shall be free from sharp edges and imperfections which could impair
functioning of the floor gully or give risk of injury.
4.3 Apertures in gratings
Apertures can be of any shape and may also be formed between grating and frame.
The dimensions of apertures in grating shall be as specified in Table 1.
Table 1 — Apertures in gratings
Dimensions of apertures in gratings
Class Minimum width Maximum width
mm mm
a
H 1,5 15 (max. 8 mm in barefoot areas)
a
K 3 10 (max. 8 mm in barefoot areas)
b
L 15 4
15 (max. 8 mm in barefoot areas)
a
Apertures of less than 4 mm width are permitted but are not included in the hydraulic tests.
b
In commercially used premises, gratings may also be used with a maximum width of apertures up to 31 mm.
4.4 Resistance of trap with mechanical closure to pressure
4.4.1 Requirements
+40
A gully with mechanical closure shall withstand a positive pressure of 400 Pa for 15 min. When tested
in accordance with 4.4.2. The applied pressure shall not drop beyond 90 % of the starting pressure within
15 min.
4.4.2 Test method
Mount the floor gully in a test arrangement as illustrated in Figure 3, and run water through the gully.
Close the flap by means of the bypass valves and slowly increase negative pressure until the mechanical
closure opens.
Air coming in at negative pressure is not a condition of failure.
Open the flap and run water through the gully.
+40
Apply to the outlet side a positive pressure 400 Pa constant over a period of at least 15 min.
The pressure shall not drop beyond 90 % of the starting pressure within 15 min.
Interrupt the test if the pressure cannot be reached or has not stabilized within 2 min (test failed).
Verify that the mechanical closure system remains in place.
NOTE With the flap closed, set the desired negative pressure with the bypass valves, and read the manometer.
The sensors in the floor gully are connected to the recording device. When the flap is closed rapidly, the desired
vacuum pressure is established immediately. By reversing the fan and securing the flap in the closed position, the
arrangement can be used also for the measurement of the resistance to positive pressure.
Key
1 fan
2 bypass valves
3 flap
4 gully to be tested
4a connection to pressure recorder
5 drain cock
6 pressure measuring device (manometer)
Figure 3 — Typical test arrangement for determining the resistance of mechanical closure to
pressure
4.5 Blockage prevention
4.5.1 Access for cleaning
4.5.1.1 General
Floor gullies shall have provision for mechanical cleaning of the outlet pipe systems leading from the
gully.
Any opening provided for mechanical cleaning shall be tested in accordance with 4.5.1.3.
4.5.1.2 Requirements
When an opening with an airtight and watertight cover or plug is provided, the clear opening and area of
the access for cleaning shall be as specified in Table 2.
Table 2 — Access for cleaning
Outlet of gully Access for cleaning
Diameter of outlet Clear opening C Area A
mm mm mm
DN ≤ 80 C > 20 A > 800
80 < DN ≤ 110 C > 32 A > 800
110 < DN ≤ 200 C > 50 A > 1 900
4.5.1.3 Test method
Demount and remount those parts of the floor gully which are designed for cleaning access to the floor
gully itself and/or to the pipework to which it is connected and verify the fulfilment of the requirements
according to 4.5.1.2.
4.5.2 Clogging test
4.5.2.1 Requirements
The floor gullies and their components shall show no visible deformation or damage which could affect
their fitness for use/which impair their function (odour-tightness and resistance to pressure).
After the test, the functional characteristics shall be maintained. The floor gully shall comply with 4.4.1
and 4.9.1.1.
NOTE The test consists of subjecting the floor gully to number of cycles in order to establish its behaviour over
time.
4.5.2.2 Test method
Mount the floor gully in a test arrangement as illustrated in Figure 4 a).
The arrangement shall be placed in such a way that the fibres of the test solution will flow towards the
gully.
Connect a suitable pipe to the outlet of the floor gully.
Prepare the test solution as indicated in Annex B.
Carry out the following cycle 600 times (1 day of test):
— flow rate between 0,12 l/s and 0,20 l/s of test solution at (35 ± 5) °C for (30 ± 2) s;
— pause for (30 ± 2) s.
Break (night) of 12 h to 24 h. If applicable, the grating shall be cleaned after 600 cycles and fibres shall be
returned to the tank. Repeat 5 times steps 1 and 2 (5 days of test).
st
Break (weekend) of 48 h to 72 h (1 week of test).
nd
Renew the test solution and repeat the step 1 and 2 (2 week of test).
At the end of this test (within 3 days), check the resistance to pressure in accordance with the test in 4.4
and the odour-tightness in accordance with the test in 4.9.1.
The fibre used for the test shall be recorded in the test report.
Dimensions in millimetres
a) Test setup
b) Test specimen shown with vertical outlet
Key
1 tank filled with the test solution shaped to avoid sedimentation
2 pump which does not affect the test solution e.g. membrane or screw pump
3 pump provided with controllable flow rate which does not affect the test solution e.g. membrane or screw
pump
4 inclined channel (gradient 1,5 % ± 0,1 %)
5 test specimen shown with the option for either a horizontal or vertical outlet
a
finished floor
Figure 4 — Test arrangement
4.6 Places of installation
A guide for selecting the class of a floor gully appropriate to the place of installation is given below. The
selection of the appropriate class is the responsibility of the specifier.
a) Class H 1,5: areas where load is only expected due to maintenance.
b) Class K 3: areas without vehicular traffic, such as dwellings, commercial and some public buildings.
c) Class L 15: areas with light vehicular traffic, such as in commercially used premises and public areas.
All gratings shall as a minimum meet the test requirements given in 4.10.1.2 for class H 1,5. More highly
rated gratings can be used if required.
4.7 Materials
Materials shall withstand a maximum intermittent wastewater temperature of 95 °C.
Materials shall withstand the stresses likely to occur during installation and operation.
Floor gullies made of materials which are not inherently corrosion-resistant shall be protected by
corrosion prevention treatment.
4.8 Thermal behaviour of floor gullies
4.8.1 General
This test simulates use under conditions of extreme water temperatures and establishes the integrity of
the complete product.
Floor gullies shall be classified as follows:
— Class A: application in any place of installation;
— Class B: application restricted to bathrooms in private dwellings, with connection to outlet pipes
DN 40 to DN 75.
4.8.2 Requirements
The floor gullies and their components shall show no visible deformation or change in the components’
surface structure which could affect their fitness for use.
The floor gullies shall satisfy the requirements for tightness (4.9.1 and 4.9.2).
4.8.3 Test method
Mount the floor gully in accordance with Figure 5. Connect a suitable pipe to the outlet of the floor gully
(the outlet shall be open all the time). When different versions of the same components exist, the test
shall be done for the least favourable of their combinations. Admit water through the grating as follows:
— (0,5 ± 0,05) l/s of hot water at (93 ± 2) °C for (60 ± 2) s;
— pause for (60 ± 2) s;
— (0,5 ± 0,05) l/s of cold water at (15 ± 10) °C for (60 ± 2) s;
— pause for (60 ± 2) s.
Repeat this cycle 1 500 times (100 h) for class A products and 360 times (24 h) for class B products.
Check to ensure that there is no deformation or change in surface texture of any component which would
impair the fitness for use.
This test does not apply to floor gullies made exclusively of metallic materials.
4.8.4 Additional test for floor gullies for use with sheet floor coverings and liquid applied
membranes
This additional test shall be applied to floor gullies intended for installation in floor constructions where
the floor covering is a watertight material. The floor covering may be connected to the floor gully by
bonding, b
...