SIST EN 1253-2:2015

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Odtoki v stavbah - 2. del: Žlebovi in talni odtoki brez smradne zaporeAbläufe für Gebäude - Teil 2: Dachabläufe und Bodenabläufe ohne GeruchverschlussAvaloirs et siphons pour bâtiments - Partie 2 : Avaloirs de toiture et avaloirs/siphons de sol sans garde d’eauGullies for buildings - Part 2: Roof drains and floor gullies without trap91.140.80Drenažni sistemiDrainage systemsICS:Ta slovenski standard je istoveten z:EN 1253-2:2015SIST EN 1253-2:2015en,fr,de01-marec-2015SIST EN 1253-2:2015SLOVENSKI
STANDARDSIST EN 1253-2:2004SIST EN 1253-1:20031DGRPHãþD



SIST EN 1253-2:2015



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1253-2
January 2015 ICS 91.140.80 Supersedes EN 1253-1:2003, EN 1253-2:2003English Version
Gullies for buildings - Part 2: Roof drains and floor gullies without trap
Avaloirs et siphons pour bâtiments - Partie 2 : Avaloirs de toiture et avaloirs/siphons de sol sans garde d'eau
Abläufe für Gebäude - Teil 2: Dachabläufe und Bodenabläufe ohne Geruchverschluss This European Standard was approved by CEN on 22 November 2014.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1253-2:2015 ESIST EN 1253-2:2015



EN 1253-2:2015 (E) 2
Contents Page Foreword .3 1 Scope .4 2 Normative references .4 3 Terms and definitions .4 4 Requirements .9 4.1 Design and construction .9 4.2 Places of installation . 10 4.3 Materials . 11 4.4 Watertightness . 11 4.5 Mechanical strength . 11 4.6 Flow rates . 11 4.7 Additional requirements in relation to the installation . 13 5 Test methods . 15 5.1 Dimensions of apertures in gratings . 15 5.2 Water tightness for roof drain and floor gully bodies and extensions . 15 5.3 Loading test . 15 5.4 Mechanical strength . 19 5.5 Flow rates . 20 5.6 Tightness of roof drains and floor gullies for use with sheet floor coverings, membranes or liquid applied membranes . 30 5.7 Behaviour when exposed to hot bitumen or asphalt . 31 5.8 Determination of resistance in climatic influences . 31 5.9 Temperature cycling test . 32 6 Allocation and sequence of tests . 32 7 Marking . 32 8 Evaluation of conformity . 33 Annex A (normative)
Sequence of the tests . 34 Annex B (informative)
A-deviation . 35 Bibliography . 36
SIST EN 1253-2:2015



EN 1253-2:2015 (E) 3 Foreword This document (EN 1253-2:2015) 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 July 2015 and conflicting national standards shall be withdrawn at the latest by July 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document, together with EN 1253-1:2015, supersedes EN 1253-1:2003 and EN 1253-2:2003. This is the second part in EN 1253, a series of standards relating to floor gullies, roof drains and access covers for drainage systems inside buildings. 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 of 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. Since the latest versions of EN 1253-1 and EN 1253-2 the most significant technical changes are the following: a) reduction of scope on roof outlets and floor gullies without trap including parapet and emergency drains for use in gravity and siphonic drainage systems; b) more definitive description of products; c) modification of terms and definitions; d) precision in definition of places of installation; e) consideration of liquid applied membranes as connecting components; f) precision of test conditions for flow rate testing for different types of products; g) revision of loading test concerning test loads, loading speed as well as shape, size and point of impact of test blocks in dependence on different configuration of gratings; h) introduction of classification of products concerning their temperature cycling behavior according to number of hot/cold water cycles. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 4
1 Scope This European Standard classifies roof drains and floor gullies without trap for use inside buildings, gives guidance for places of installation and specifies requirements for the construction, design, performance and marking as well as test methods of factory made roof drains and floor gullies without trap (further: floor gullies) for buildings, irrespective of the material for use in drainage systems. Although normally used to convey rainwater and wastewater, these roof drains and floor gullies without trap may convey other wastewater provided there is no risk of damage to components or of injury to health. This European Standard does not apply to trapped floor gullies with a depth of water seal of at least 50 mm as specified in EN 1253-1. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 124, Gully tops and manhole tops for vehicular and pedestrian areas — Design requirements, type testing, marking, quality control 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. 3.1 roof drain non-trapped discharge fitting for the drainage of surface water from roof, balcony and terrace surfaces via a rainwater connecting pipe Note 1 to entry: See Figure 1. Note 2 to entry: A roof drain can include an anti-vortex device. 3.2 parapet drain roof drain for the drainage of flat roofs and roof terraces with a fascia which penetrates the fascia Note 1 to entry: See Figure 2. 3.3 emergency drain roof drain for emergency drainage in the form of a roof, parapet or gutter outlet with or without a rainwater connection pipe SIST EN 1253-2:2015



EN 1253-2:2015 (E) 5
Key 1 grating/frame, leaf/gravel trap 2 liquid applied roof waterproofing kit or flexible sheet for waterproofing 3 extension 4 seal 5 connecting flange 6
body 7 outlet Figure 1 — Roof drain (example) SIST EN 1253-2:2015



EN 1253-2:2015 (E) 6
Key 1 grating 2 body 3 connecting flange 4 liquid applied roof waterproofing kit or flexible sheet for waterproofing 5 outlet (round or rectangular) Figure 2 — Parapet drain (example) 3.4 gravity drainage system system where flow is caused by gravity and where the pipe normally operates partially full 3.5 siphonic drainage system system for drainage of rainwater in which the outlets and pipework enable the system to flow completely full under design conditions and make use of the total height available between the outlets and the point of change to partially filled flow 3.6 head of water depth h of a water line over the spill edge of the roof drain or floor gully as shown in Figure 3
Key h
head of water Figure 3 — Head of water 3.7 grating removable component with apertures which permit the discharge of water SIST EN 1253-2:2015



EN 1253-2:2015 (E) 7 3.8 frame support for a grating or cover which is connected to a body either directly or by means of a flexible sheet for waterproofing clamping ring or an extension 3.9 cover removable part of an access cover which covers the opening 3.10 body part of a roof drain or floor gully below or in the floor, ground or roof on which the grating/frame/extension is mounted, and to which the pipework is connected 3.11 extension component used to adjust the height of a grating or cover above a body 3.12 joint connection between the adjacent ends of two components including the means of sealing 3.13 flexible sheet for waterproofing clamping ring component used to clamp a flexible sheet for waterproofing to a body or extension 3.14 connecting flange separate or an integral part of a body or of an extension which receives a flexible sheet for waterproofing or the liquid applied roof waterproofing kit 3.15 external diameter OD mean external diameter of the pipe barrel at any cross section 3.16 internal diameter ID mean internal diameter of the pipe barrel at any cross section 3.17 liquid applied roof waterproofing kit LARWK particular combination of a defined set of components to be installed in liquid form for roof 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 covering 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. 3.18 flexible sheet for waterproofing factory made sheet for prevention of passage of water from the plane to another which can be rolled up or folded for easy transport to the site SIST EN 1253-2:2015



EN 1253-2:2015 (E) 8
3.19 untrafficked roof roof consisting of the structural deck and all the layers on it, including waterproofing, insulation and a surface protective layer not designed for foot traffic above that required for maintenance 3.20 pedestrian access roof roof consisting of the structural deck and all the layers on it, including waterproofing, insulation and a surface protective layer designed for foot traffic and gathering of people greater than that required for maintenance 3.21 green roof roof consisting of the structural deck and all the layers on it, including waterproofing, insulation and a thin layer of growing medium planted with vegetation 3.22 roof garden roof consisting of the structural deck and all the layers on it, including waterproofing, insulation and a substantial layer of growing medium planted with intensive vegetation and possibly paving 3.23 parking deck roof consisting of the structural deck and all the layers on it, including waterproofing, insulation and a surface protective layer designed to withstand and distribute loads produced by the traffic associated with the parking of vehicles 3.24 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 3.25 floor gully without trap discharge fitting the top of which is a grating or cover capable of installation at ground or floor level intended to receive wastewater through apertures in the grating Note 1 to entry: See Figure 4.
Key 1 grating 2 outlet 3 body Figure 4 — Floor gully without trap (typical example) SIST EN 1253-2:2015



EN 1253-2:2015 (E) 9 3.26 wastewater water composed of any combination of water discharged from domestic, industrial or commercial premises, surface run-off and accidentally any sewer infiltration water [SOURCE: EN 16323:2014, 2.3.10.65] 3.27 surface water water from precipitation, which has not seeped into the ground and is discharged to the drain or sewer system directly from the ground or from exterior building surfaces [SOURCE: EN 16323:2014, 2.1.1.3] 3.28 clear opening CO diameter of the largest circle that can be inscribed within the unsupported area of the grating 3.29 test load specified load which a component is required to withstand 3.30 outlet male or female connection to the drainage pipe 4 Requirements 4.1 Design and construction 4.1.1 General Roof drains and 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 roof drain or floor gully and the floor or roof construction, which would impair the functioning of the installed roof drain or floor gully. The upper surfaces of frame and grating shall be flush, except in untrafficked roof. When in position, it shall not be possible for gratings and covers to be dislodged from the frame, but they shall be easy to remove for maintenance and cleaning. Roof drains and floor gullies shall be delivered with installation instructions. All pipe joints to and from the roof drain or floor gully shall be designed to be watertight in accordance with EN 476. 4.1.2 Appearance Internal and external surfaces shall be free from sharp edges and imperfections which could impair functioning of the gully or give risk of injury. 4.1.3 Apertures in gratings Apertures can be holes or slots of any shape. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 10
When measured in accordance with 5.1, the permissible aperture dimensions for gratings are given in Table 1. Table 1 — Apertures in gratings Class Dimensions of apertures in gratings
Minimum width mm Maximum width mm H 1,5
K 3 L 15 a
R 50 a
M 125 a
N 250 P 400
4 b
4 b
4
4
4
4
4 15 (max. 8 mm in barefoot areas) 10 (max. 8 mm in barefoot areas) 15 (max. 8 mm in barefoot areas) 25 (max. 8 mm in barefoot areas) 25 25 25 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 and shall not form part of the hydraulic tests. Gratings for installation in untrafficked roof shall project not less than 30 mm above the roof covering. If the height of any subsequent surfacing cannot be specified, the grating shall project not less than 70 mm above the connecting surfaces. NOTE If necessary, appropriate means can be provided to prevent the ingress of fine particles such as gravel into a roof drain. 4.2 Places of installation 4.2.1 General A guide for selecting the class of roof drains and floor gullies 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: Untrafficked roof such as felt-and-gravel roofs, gravel fill roofs and similar. 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. d) Class R 50:
Areas with vehicular traffic, such as in commercially used premises and factories. e) Class M 125: Areas with vehicular traffic, such as parking decks, factories and workshops. f) Class N 250: Heavy duty industrial areas subject to fork lift traffic. g) Class P 400: Extra-heavy duty applications where gullies are subjected to industrial fork lift trucks and/or where heavy vehicles are manoeuvring. Classes E 600 and F 900 gully tops conforming to EN 124 may be used for all areas subject to special stresses such as exhibition halls, market halls, factory sheds and aircraft hangars. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 11 4.2.2 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 5.3, Class H 1,5. 4.3 Materials Materials for roof drains shall be resistant to rainwater, UV radiation, local climatic conditions and, if required, to hot bitumen. Materials for floor gullies shall withstand a maximum intermittent wastewater temperature of 95 °C. Materials shall withstand the stresses likely to occur during installation and operation. Roof drains and floor gullies made of materials which are not inherently corrosion-resistant shall be protected by corrosion prevention treatment. For industrial wastewater applications, the chemical compatibility and exposure to continuous elevated temperatures of materials with the transported fluids should be determined separately between the specifier and the manufacturer. 4.4 Watertightness 4.4.1 Watertightness for bodies No leaks shall occur when tested in accordance with 5.2. 4.4.2 Watertightness of joints for extensions Where the situation dictates watertightness between extension and body (typical exception, e.g. green roofs, inverted roofs), the joint between the extension and the body shall be watertight when tested in accordance with 5.2. 4.5 Mechanical strength 4.5.1 Loading strength Roof drains and floor gullies and/or gratings are classified by loading strength, when tested in accordance with 5.3, into the following classes: H 1,5, K 3, L 15, R 50, M 125, N 250, P 400. Roof drains and floor gullies not accessible to either vehicular or foot traffic or not required to withstand external loads are not classified. 4.5.2 Clamping ring When tested in accordance with 5.4, the clamping ring shall not change its position and shall not show any damage after testing that impairs function. 4.6 Flow rates 4.6.1 Floor gullies When tested in accordance with 5.5.1, floor gullies shall be capable of discharging at flow rates given in Table 2. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 12
Table 2 — Minimum flow rates for floor gullies Nominal size of outlet a Floor gullies (qgrate) DN/OD DN/ID Minimum flow rate l/s Head of water h mm 32
0,4 20
30 0,4 40
0,6
40 0,6 50
0,8
50 0,8 63
0,8 75
0,8
70 0,8
75 0,8 90
0,8 100
1,4
100 1,4 110
1,4 125
2,8
125 2,8
150 4,0 160
4,0 a All dimensions not mentioned in this table shall be tested with the next higher dimension. 4.6.2 Roof drains or parapet drains The manufacturer shall state the flow rates of the roof drains or parapet drains as a function of the head of water in a table or a diagram. The tests shall be performed in accordance with 5.5.2 and 5.5.3 and in accordance with the manufacturer's installation instructions. The tests are considered to be passed, if the values given in Table 3 are met. Parapet drains can be non-piped (spouts) or piped in the form of a drainage system. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 13 Table 3 — Minimum flow rates for roof drains Nominal size of roof spigot Gravity drainage Siphonic drainage DN/OD DN/ID Minimum flow rate Head of water h Minimum flow rate Head of water h
l/s mm l/s mm 40
— — 2,5 55
40 3,0 50
0,9 35 4,0
50 6,0 63
1,0 7,0 75
1,7 12,0
70 80
2,6 14,0
75 90
3,0 18,0 110
4,5 22,0
100 125
7,0 45 — —
125 160
8,1
150 4.6.3 Roof drains and parapet drains for siphonic drainage Roof drains and parapet drains shall be suitable for roof drainage systems intended to be operated in a fully filled state. The flow rates and the single resistor coefficient shall be determined in accordance with 5.5.4.2 and be stated by the manufacturer. When tested in accordance with 5.5.4, roof drains and parapet drains shall be capable of achieving the minimum flow rates given in Table 3. 4.6.4 Coefficient of hydraulic loss For designing a siphonic drainage system, the coefficient of hydraulic loss of the complete ready-for-use roof drain with and without extensions shall be determined in accordance with 5.5.4.3. 4.7 Additional requirements in relation to the installation 4.7.1 Roof drains and floor gullies for use with a membrane Roof drains and floor gullies for use with a membrane shall be fitted with a connecting flange in accordance with Table 4. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 14
Table 4 — Connecting flanges Type of seal in flange area Minimum effective flange width mm Connecting flange with counter-flange Flange for bonding Flange for welding Fixed a Loose Bitumen covering
— bonded — — 100 — — clamped 70 60 — — —
Membranes manufactured from plastics or elastomers
— attached with adhesive — — 30 — — clamped 50 40 — — — welded on membrane — — — 50 — LARWK — — 30 — a This value is also applicable to gullies fitted with a skirt membrane at the manufacturer's works. Roof drains for use with a membrane shall be fitted with a sealing flange in accordance with Table 4 and/or with a membrane clamping ring and shall be tight when tested in accordance with 5.6. For floor gullies where a clamping ring without weep holes is used, the connection of a flange shall be tight when tested in accordance with 5.6. When tested in accordance with 5.4.2, there shall be no peeling at ≤ 100 N. 4.7.2 Behaviour when exposed to hot bitumen or asphalt Roof drains and floor gullies in direct contact with hot bitumen or poured asphalt shall be resistant up to a temperature of (220 ± 5) °C when tested in accordance with 5.7. This requirement is considered to be met for roof drains with factory fixed bitumen membranes and for gullies made exclusively of metal. 4.7.3 Resistance to climatic influences Roof drains and their components shall be resistant to climatic influences. They shall be frost resistant to −20 °C and heat resistant up to 80 °C when tested in accordance with 5.8. 4.7.4 Resistance to thermal cycling When tested in accordance with 5.9, floor gullies and their components shall show no deformation or change in the components' surface structure which could affect their fitness for use. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 15 5 Test methods 5.1 Dimensions of apertures in gratings By means of suitable measuring instruments or balls of suitable sizes in accordance with Table 1, check that the dimensions of the apertures comply with the minimum and maximum dimensions specified in 4.1.3. 5.2 Water tightness for roof drain and floor gully bodies and extensions The assembly with the outlet closed and all side inlets sealed, shall be subjected to a hydrostatic pressure beginning from 0 kPa and up to 10 kPa. The test shall be deemed to have been passed if, for the duration of 15 min, no water leaks through the body walls, welds or joints. 5.3 Loading test 5.3.1 Test loads and permanent set The values for test loads and loading speed given in Table 5 shall be applied. Table 5 — Test loads and loading speed Class Test load P
kN Loading speed kN/s H 1,5 1,5 0,1 K 3 3 0,2 L 15 15 1,0 R 50 50 M 125 125 5,0 N 250 250 P 400 400 The resulting permanent set f shall not exceed the values given in Table 6. Table 6 — Maximum permanent set Clear opening CO mm Permanent set f
mm CO ≤ 250 ≤ 1,0 250 < CO
≤ 500 ≤ 0,004 ∙ CO CO > 500 ≤ 2,0 5.3.2 Testing machine The testing machine, preferably an hydraulic press, shall be capable of applying a load of at least 25 % greater than the test loads and maintaining the test load within a tolerance of ± 3 %. The dimensions of the bed of the testing machine shall be greater than the bearing area of the unit to be tested. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 16
5.3.3 Test blocks The shape and dimensions shall be selected in accordance with Table 7. Table 7 — Shape, size and positioning of test blocks (Figures 5 to 8) Clear opening CO mm Shape and size of test block mm Minimum unsupported distance û
mm Round diameter D Rectangular width W
× length L 25 < CO ≤ 50 a 20 ± 0,5 (20 ± 0,5) x (90 ± 0,5) 2,5 50 < CO ≤ 90 40 ± 0,5 (40 ± 0,5) x (110 ± 1,0) 5 90 < CO ≤ 140 75 ± 0,5 (75 ± 0,5) x (120 ± 1,0) 7,5 140 < CO ≤ 200 110 ± 1,0 (110 ± 1,0) x (180 ± 1,0) 15 200 < CO ≤ 300 150 ± 1,0 (150 ± 1,0) x (250 ± 1,0) 25 300 < CO 250 ± 1,0 (250 ± 1,0) x (400 ± 1,0) 25 a For CO < 25, the load testing is not required. The size of the test block is related to the clear opening and the minimum unsupported distance. It may never exceed the periphery of the grating. In case of conflict the smaller referring test block shall be applied. The shape of the test block is related to the shape of the grating: — for round and polygonal shaped gratings, e.g. round, triangular or square gratings, a round test block shall be applied in accordance with the clear opening of Table 7; — for rectangular shaped gratings, a rectangular shaped test block shall be applied in accordance with the clear opening of Table 7; — for rectangular shaped test blocks, the vertical corner radius shall be 3 mm; — for irregular supported gratings, a test block shall be applied which allows a minimum unsupported distance in accordance with Table 7.
Key 1 test block 4 support 2 grating 5 intermediate layer 3 frame CO clear opening Figure 5 —Test block applied on grating The test block shall be applied in a central position. In no case the unsupported distance between the test block and the supported points of the grating shall exceed the values given in Table 6. SIST EN 1253-2:2015



EN 1253-2:2015 (E) 17
a) round grating b) square grating
c) triangular grating d) octangular grating Key 1 test block û
minimum unsupported distance 2 grating D
diameter of test block 3 frame CO clear opening 4 support
Figure 6 — Top view on round test block applied on gratings
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