SIST EN 1253-8:2023
(Main)Gullies for buildings - Part 8: Trapped floor gullies with combined mechanical closure and water seal
Gullies for buildings - Part 8: Trapped floor gullies with combined mechanical closure and water seal
This document classifies floor gullies 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 combined mechanical closure and water seal (referred to as floor gullies).
Note: Floor gullies with combined mechanical closure and water seal are not covered by Part 1, Part 6, Part 7.
These products are intended to be installed where:
- the building does not exceed a ground-floor and three floors above.
Abläufe für Gebäude - Teil 8: Bodenabläufe mit Geruchverschluss mit mechanischem Geruchverschluss und Wassergeruchverschluss
Dieses Dokument klassifiziert Bodenabläufe für den Einsatz innerhalb von Gebäuden, gibt eine Anleitung hinsichtlich der Einbaustellen und legt Anforderungen an die Konstruktion, Ausführung, Funktion und Kenn-zeichnung von werkmäßig hergestellten Abläufen für Gebäude, unabhängig vom Werkstoff, zur Verwendung in Entwässerungsanlagen mit einer Kombination aus mechanischem Geruchverschluss und Sperrwasser (im Folgenden als Bodenabläufe bezeichnet) fest.
ANMERKUNG Kombinierte Bodenabläufe mit mechanischem Geruchverschluss und Sperrwasser werden in Teil 1, Teil 6 und Teil 7 nicht behandelt.
Diese Produkte sind für den Einbau in den folgenden Fällen bestimmt:
das Gebäude weist neben dem Erdgeschoss nicht mehr als drei Stockwerke auf.
Avaloirs et siphons pour bâtiments - Partie 8 : Siphons de sol combinant un système d'obturation mécanique et une garde d'eau
Le présent document classifie les siphons de sol utilisés à l’intérieur des bâtiments, 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 combinant un obturateur mécanique et une garde d’eau (appelés « siphons de sol » dans le reste du document).
NOTE Les siphons de sol combinant un obturateur mécanique et une garde d’eau ne sont pas traités dans les Parties 1, 6 et 7.
Ces produits sont destinés à être installés lorsque :
⎯ la hauteur du bâtiment ne dépasse pas un rez-de-chaussée surmonté de trois étages.
Odtoki v stavbah - 8. del: Talni odtoki s kombinirano mehansko smradno zaporo in zaporo vode
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 kombinirana mehanska smradna zapora in zapora vode (imenovani talni odtoki).
Opomba: Talni odtoki s kombinirano mehansko smradno zaporo in zaporo vode niso zajeti v 1. delu, 6. delu, 7. delu.
Ti izdelki so namenjeni za namestitev na mestih:
– kjer stavba ne obsega več kot pritličja in treh nadstropij.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 1253-8:2023
01-januar-2023
Odtoki v stavbah - 8. del: Talni odtoki s kombinirano mehansko smradno zaporo in
zaporo vode
Gullies for buildings - Part 8: Trapped floor gullies with combined mechanical closure and
water seal
Abläufe für Gebäude - Teil 8: Bodenabläufe mit Geruchverschluss mit mechanischem
Geruchverschluss und Wassergeruchverschluss
Avaloirs et siphons pour bâtiments - Partie 8 : Siphons de sol combinant un système
d'obturation mécanique et une garde d'eau
Ta slovenski standard je istoveten z: EN 1253-8:2022
ICS:
91.140.80 Drenažni sistemi Drainage systems
SIST EN 1253-8:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 1253-8:2023
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SIST EN 1253-8:2023
EN 1253-8
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2022
EUROPÄISCHE NORM
ICS 91.140.80
English Version
Gullies for buildings - Part 8: Trapped floor gullies with
combined mechanical closure and water seal
Avaloirs et siphons pour bâtiments - Partie 8 : Siphons Abläufe für Gebäude - Teil 8: Bodenabläufe mit
de sol combinant un obturateur mécanique et une Geruchverschluss mit mechanischem Geruchverschluss
garde d'eau und Wassergeruchverschluss
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 1253-8:2022 E
worldwide for CEN national Members.
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
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 and water seal 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 . 20
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 . 27
Annex A (normative) Examples of top view of the positioning of shape of test blocks applied
on the gratings . 28
Annex B (normative) Test solutions . 30
Bibliography . 32
2
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
European foreword
This document (EN 1253-8:2022) 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 1253-8, Trapped floor gullies with combined mechanical closure and water seal.
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.
3
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
1 Scope
This document classifies floor gullies for domestic wastewater for use inside buildings, gives guidance,
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 combined mechanical closure and water seal (referred to as floor
gullies).
NOTE Floor gullies with combined mechanical closure and water seal are not covered by EN 1253-1,
EN 1253-6, EN 1253-7.
These products are intended to be installed where both condition 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 terms and definitions given in EN 16323 and the following 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.
4
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
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 10 weep hole
2 grating/cover 11 flange for bonding membranes
3 extension 12 sediment bucket
4 mechanical closure 13 connecting flange with counter flange
5 trap with water seal a fixed flange
6 depth of water seal (H) b loose flange
7 outlet 14 flange for clamping flexible flooring with a clamping ring
8 body 15 seal
9 access for cleaning 16 flange for bonding liquid applied membrane
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
5
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
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 combined mechanical closure and water seal
removable or integral part of the body which prevents the passage of foul air from the outlet to the inlet
by means of mechanical closure and water seal system
3.13
depth of water seal
effective height of water in the trap (H) which prevents the passage of foul air
Note 1 to entry: See Figure 1.
6
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
3.14
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]
3.15
sheet floor covering
flexible watertight finished layer for floors affixed to the flange by bonding, welding and/or by means of
a clamping ring
3.16
membrane
watertight and damp-proof layer attached to the floor gully either in the floor or on the floor
3.17
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
3.18
outlet
male or female connection to the discharge pipe
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
3.19
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
3.20
clear opening
CO
diameter of the largest circle that can be inscribed within the unsupported area of the grating
3.21
test load
specified load which a component is required to withstand
3.22
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 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.
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
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)
4
a
K 3 10 (max. 8 mm in barefoot areas)
4
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 and water seal to pressure
4.4.1 Requirements
+40
A gully with mechanical closure shall withstand a positive pressure of 400 Pa for 15 minutes. When
0
tested in accordance with 4.4.2. The applied pressure shall not drop beyond 90 % of the starting pressure
within 15 minutes.
4.4.2 Test method
Mount the floor gully in a test arrangement as illustrated in Figure 3, and run water through the gully
until the trap is filled.
+0
Close the flap and set a pressure of − 400 Pa by means of the bypass valves. Open the flap and fill the
−10
trap with water.
Close the flap and slowly open after about 5 ± 0,5 s. Repeat this procedure until the trap no longer loses
water, but no more than 5 times, before proceeding.
Air coming in at negative pressure is not a condition of failure.
+0,2
Remove 8 mm of water height; this corresponds to the reduction in the depth of water seal due to
0,0
evaporation over a period of disuse. If the mechanical closure is intended to prevent the evaporation of
+0,2
water, only 4 mm of water need to be removed.
0,0
Apply to the outlet side a positive pressure such that flow of air just occurs. Record the pressure.
+40
Apply to the outlet side to a positive pressure 400 Pa constant over a period of at least 15 min.
0
The applied pressure shall not drop beyond 90 % of the starting pressure within 15 minutes.
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.
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EN 1253-8:2022 (E)
Key
1 fan
2 bypass valves
3 flap
4 gully to be tested
4a connection to pressure recorder
4b optional connection to water level recorder
5 drain cock
6 pressure measuring device (manometer)
Figure 3 — Typical test arrangement for determining the resistance of the combined mechanical
closure and water seal 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 diameter of such
opening 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
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
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.
1) 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.
2) 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).
3) Break (weekend) of 48 h to 72 h (1st week of test).
4) Renew the test solution and repeat the steps 1 and 2 (2nd week of test).
5) 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.
6) The fibre used for the test shall be recorded in the test report.
11
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
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
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SIST EN 1253-8:2023
EN 1253-8:2022 (E)
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 is expected.
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 conform to 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:
1) (0,5 ± 0,05) l/s of hot water at (93 ± 2) °C for (60 ± 2) s;
2) pause for (60 ± 2) s;
3) (0,5 ± 0,05) l/s of cold water at (15 ± 10) °C for (60 ± 2) s;
4) pause for (60 ± 2) s.
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EN 1253-8:2022 (E)
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, bonding and a clamping ring combination, or by a clamping ring alone.
Mount the floor gully in the test box in accordance with the manufacturer's instructions.
Cover the entire internal surface of the box with sheet floor covering of the thickness which the floor gully
manufacturer states is the thickness for which the floor gully is designed. If the floor gully is designed for
a number of different thicknesses of sheet floor covering, it may be necessary to carry out several tests.
When applying the covering the instructions of the sheet floor covering manufacturer are to be followed.
A moisture indicator is fitted to the bottom of the box at the opening where the floor gully is placed.
Admit water to the floor gully via the floor covering and grating, via supply pipe ‘2’, as shown in Figure 5.
Supply water as follows:
a) (0,5 ± 0,05) l/s of hot water at (60 ± 2) °C for (60 ± 2) s;
b) pause for (60 ± 2) s;
c) (0,5 ± 0,05) l/s of cold water at (15 ± 10) °C for (60 ± 2) s;
d) pause for (60 ± 2) s.
Repeat this cycle 1500 times (100 h)
During the test the outlet of the floor gully shall be closed when water is being supplied, and open during
pauses. Water will back up by approximately 80 mm in the box.
The outlet of the floor gully shall be connected to a pipe of 1 m length of the same DN as the outlet, laid at
a gradient of (1,5 ± 0,1 %)
...
SLOVENSKI STANDARD
oSIST prEN 1253-8:2020
01-september-2020
Odtoki v stavbah - 8. del: Talni odtoki s kombinirano mehansko smradno zaporo in
zaporo vode
Gullies for buildings - Part 8: Trapped floor gullies with combined mechanical closure and
water seal
Abläufe für Gebäude - Teil 8: Bodenabläufe mit Geruchverschluss mit mechanischem
Geruchverschluss und Wassergeruchverschluss
Avaloirs et siphons pour bâtiments - Partie 8 : Siphons de sol combinant un système
d'obturation mécanique et une garde d'eau
Ta slovenski standard je istoveten z: prEN 1253-8
ICS:
91.140.80 Drenažni sistemi Drainage systems
oSIST prEN 1253-8:2020 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 1253-8:2020
DRAFT
EUROPEAN STANDARD
prEN 1253-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2020
ICS 91.140.80
English Version
Gullies for buildings - Part 8: Trapped floor gullies with
combined mechanical closure and water seal
Avaloirs et siphons pour bâtiments - Partie 8 : Siphons Abläufe für Gebäude - Teil 8: Bodenabläufe mit
de sol combinant un système d'obturation mécanique Geruchverschluss mit mechanischem Geruchverschluss
et une garde d'eau und Wassergeruchverschluss
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, 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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 1253-8:2020 E
worldwide for CEN national Members.
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Contents Page
4.1 General . 8
4.2 Appearance . 8
4.3 Apertures in gratings . 8
4.4 Resistance 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 Anti-blockage (clogging test) . 11
4.6 Places of installation . 13
4.6.1 General . 13
4.6.2 Exceptions . 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 . 16
4.10.1 Loading strength. 16
4.10.2 Clamping ring strength . 19
4.10.3 Additional mechanical strength according to the installation . 19
4.11 Flow rates . 22
4.11.1 Principle . 22
4.11.2 Requirements . 23
4.11.3 Test method . 23
4.11.4 Test arrangement . 23
Annex A (normative) Sequence of the tests . 26
Annex B (normative) Examples of top view of the positioning of shape of test blocks applied
on the gratings . 27
Annex C (normative) Test solution . 29
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European foreword
This document (prEN 1253-8:2020) has been prepared by 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.
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 1253-8, Trapped floor gullies with combined mechanical closure and water seal.
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.
Since the versions of EN 1253-1 and EN 1253-2, the most significant technical changes are the
following:
a) grouping of “Requirements” and “Test method” articles for a test;
b) adding Annex B with Examples of top view of the positioning of shape of test blocks applied on the
gratings;
c) adding tolerance;
d) adding a clogging test.
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1 Scope
This document classifies floor gullies 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
combined mechanical closure and water seal (referred to as floor gullies)
NOTE Floor gullies with combined mechanical closure and water seal are not covered by Part 1, Part 6,
Part 7.
These products are intended to be installed where:
— the building does not exceed a ground-floor and three floors above
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 (all parts), Gully tops and manhole tops for vehicular and pedestrian areas
EN 476, General requirements for components used in drains and sewers
EN 1253-3, Gullies for buildings — Part 3: Evaluation of conformity
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
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: See Figure 1.
Note 2 to entry: In this document, the term trapped “floor gully” includes linear products, such as channel
drains.
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a) Floor gully with side inlets and flange for b) Floor gully with flange for clamping
bonding membranes (example) membranes (fixed and loose flange) (example)
c) Floor gully with side inlets and flange for d) Channel drain with flange for bonding
clamping flexible flooring (e.g. PVC flooring) liquid applied membranes (example)
(example)
Key
1 finished floor 9 weep hole
2 grating/cover 10 flange for bonding membranes
3 extension 11 sediment bucket
4 trap 12 connecting flange with counter flange
5 depth of water seal (H ≥ 50 mm) a fixed flange
6 outlet b loose flange
7 body 13 flange for clamping flexible flooring with a clamping
ring
14 seal
8 access for cleaning 15 flange for bonding liquid applied membrane
Figure 1 — Types of floor gullies
3.2
grating
removable component with apertures which permits the discharge of water
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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 barrel at any cross section
3.11
internal diameter
ID
mean internal diameter of the pipe barrel at any cross section
3.12
trap with mechanical closure
removable part of the body which prevents, by means of mechanical closure system, the passage of foul
air from the outlet to the inlet
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]
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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 a water line 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 line 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
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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
by application and/or incorporation and/or joining of the components in accordance with particular
design methods
Note 1 to entry: The liquid applied watertight 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.
In areas where pressure testing of the pipe system is necessary floor gullies for use in the ground floor
shall enable such test to be performed.
The upper surfaces of frame and grating shall be flush. When in position, it shall not be possible for
gratings and covers to be dislodged from the frame, but they shall be easy to be released for e.g.
maintenance and cleaning.
Traps with combined mechanical closure and water seal shall be prevented, by design features such as
fixings or weights, from uncontrolled floating or becoming displaced.
Without water, the mechanical closure shall ensure the functionality of the floor gully where water trap
is subjected to evaporation.
Floor gullies and their components shall be resistant to normal actions of mechanical and thermal
character.
Floor gullies may be designed without side inlet.
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 holes or slots of any shape and may also be formed between grating and frame.
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By means of suitable measuring instruments or balls of suitable sizes, 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
H 1,5 b 15 (max. 8 mm in barefoot areas)
4
K 3 b 0 (max. 8 mm in barefoot areas)
4
a 4 15 (max. 8 mm in barefoot areas)
L 15
a
In commercially used premises, gratings may also be used with a maximum width of apertures up to 31 mm.
b
Apertures of less than 4 mm width are permitted but shall not form part of the hydraulic tests.
4.4 Resistance to pressure
4.4.1 Requirements
The applied pressure shall be +400 Pa.
4.4.2 Test method
Mount the floor gully in a test arrangement as illustrated in Figure 3, and run water through the gully
until the trap is filled.
Close the flap and set a pressure of −400 Pa by means of the bypass valves. Open the flap and fill the
trap with water.
Close the flap and slowly open after about 5 s. Repeat this procedure until the trap no longer loses
water, but no more than 5 times.
Air coming in at negative pressure is not a condition of failure.
Remove 8 mm of water height; this corresponds to the reduction in the depth of water seal due to
evaporation over a period of disuse.
Apply to the outlet side a positive pressure such that flow of air just occurs. Record the pressure.
Apply to the outlet side to a positive pressure 400 Pa (−0/+10 %) constant over a period of at least
15 min.
The pressure may not drop beyond 90 % of the starting pressure.
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.
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.
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Key
1 fan
2 bypass valves
3 flap
4 water seal
4a connection to pressure recorder
4b connection to water level recorder
5 drain cock
6 pressure measuring device (manometer)
Figure 3 — Typical test arrangement for determining the resistance of water seals to pressure
4.5 Blockage prevention
4.5.1 Access for cleaning
4.5.1.1 General
Floor gullies should have provision for mechanical cleaning of the outlet pipe systems leading to and
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 diameter of such
opening shall be as specified in Table 2.
Table 2 — Access for cleaning
DN Dimensions of access for cleaning (mm)
DN ≤ 110 Ø > 32
125 ≤ DN ≤ 200 Ø > 50
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.
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4.5.2 Anti-blockage (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
and 4.9.1.
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 4a).
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 D.
1) 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.
2) Break (night) of 12 h to 24 h.
If applicable, the grating shall be cleaned after 600 cycles and cellulose fibres shall be returned to
the tank.
Repeat 5 times steps 1 and 2 (5 d of test).
3) Break (week-end) of 48 h to 72 h (1 week of test).
4) Renew the test solution and repeat the steps 1 and 2 (2 weeks of test).
5) At the end of this test (within 3 d), 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.
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Dimensions in millimetres
a) Test setup
b) test specimen shown with horizontal/vertical outlet
Key
1 12 l tank filled with the test solution with a shape 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 ± 1,5 %)
5 test specimen shown with horizontal/vertical outlet
a finished floor
Figure 4 — Test arrangement (Placeholder)
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4.6 Places of installation
4.6.1 General
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 no load is expected.
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.
4.6.2 Exceptions
Non-load bearing gratings for places of installation which are not accessible to vehicles and pedestrians
(protected by suitable masonry surroundings) and which are not covered by the places of installation
listed above nor by EN 124 shall at least conform to the test requirements given in 4.10.1 for class H 1,5.
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 only for 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:
1) (0,5 ± 0,05) l/s of hot water at (93 ± 2) °C for (60 ± 2) s;
2) pause for (60 ± 2) s;
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3) (0,5 ± 0,05) l/s of cold water at (15 ± 10) °C for (60 ± 2) s;
4) 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, bonding and a clamping ring combination, or by a clamping ring alone.
Mount the floor gully in the test box in accordance with the manufacturer's instructions.
Cover the entire internal surface of the box with sheet floor covering of the thickness which the floor
gully manufacturer states is the thickness for which the floor gully is designed. If the floor gully is
designed for a number of different thicknesses of sheet floor covering, it may be necessary to carry out
several tests. When applying the covering the instructions of the sheet floor covering manufacturer are
to be followed.
A moisture indicator is fitted to the bottom of the box at the opening where the floor gully is placed.
Admit water to the floor gully via the floor covering and grating as shown in Figure 5.
Supply water as follows:
1) (0,5 ± 0,05) l/s of hot water at (93 ± 2) °C for (60 ± 2) s;
2) pause for (60 ± 2) s;
3) (0,5 ± 0,05) l/s of cold water at (15 ± 10) °C for (60 ± 2) s;
4) pause for (60 ± 2) s.
During the test the outlet of the floor gully shall be closed when water is being supplied, and open
during pauses. Water will back up by approximately 80 mm in the box.
The outlet of the floor gully shall be connected to a pipe of 1 m length of the same DN as the outlet, laid
at a gradient of (1,5 ± 0,1) % to the horizontal.
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Dimensions in millimetres
Key
1 hot and cold water supply for testing the floor gully
2 hot and cold water supply for testing sheet floor covering connection
3 outlet
Figure 5 — Test box for temperature cycling and for testing floor gullies for use with sheet floor
coverings
4.9 Tightness
4.9.1 Odour-tightness
4.9.1.1 Requirements
The pressure shall not drop below 180 Pa over a period of at least 15 min.
4.9.1.2 Test method
Before conducting the test, dismantle and then reassemble the floor gully. Check that all parts are
correctly fitted.
Use the same or a similar test arrangement as shown in Figure 6.
Ensure that the temperatures of the floor gully, the water in the water seal and the room shall not vary
by more than ± 2 °C during the test.
Connect the floor gully to an airtight pipe arrangement with a volume of approximately 2,0 l.
Fill the trap with water. Apply a positive pressure of 200 Pa through the outlet. When the pressure is
stable, close the valve.
Interrupt the test if the pressure has not stabilized within 2 min (test failed).
Verify leakage as the decrease in sta
...
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