Bsi bs en 01253 2 2015

BS EN 1253-2:2015 BSI Standards Publication Gullies for buildings Part 2: Roof drains and floor gullies without trap BS EN 1253-2:2015 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 1253-2:2015 This document, together with BS EN 1253-1:2015, supersedes BS EN 1253-1:2003 and BS EN 1253-2:2003, which are withdrawn The UK participation in its preparation was entrusted to Technical Committee B/505, Wastewater engineering A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © The British Standards Institution 2015 Published by BSI Standards Limited 2015 ISBN 978 580 78398 ICS 91.140.80 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2015 Amendments issued since publication Date Text affected BS EN 1253-2:2015 EN 1253-2 EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM January 2015 ICS 91.140.80 Supersedes EN 1253-1:2003, EN 1253-2:2003 English Version Gullies for buildings - Part 2: Roof drains and floor gullies without trap Avaloirs et siphons pour bâtiments - Partie : 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 E BS EN 1253-2:2015 EN 1253-2:2015 (E) Contents Page Foreword Scope Normative references Terms and definitions 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 Requirements Design and construction .9 Places of installation 10 Materials 11 Watertightness 11 Mechanical strength 11 Flow rates 11 Additional requirements in relation to the installation 13 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 Test methods 15 Dimensions of apertures in gratings 15 Water tightness for roof drain and floor gully bodies and extensions 15 Loading test 15 Mechanical strength 19 Flow rates 20 Tightness of roof drains and floor gullies for use with sheet floor coverings, membranes or liquid applied membranes 30 Behaviour when exposed to hot bitumen or asphalt 31 Determination of resistance in climatic influences 31 Temperature cycling test 32 Allocation and sequence of tests 32 Marking 32 Evaluation of conformity 33 Annex A (normative) Sequence of the tests 34 Annex B (informative) A-deviation 35 Bibliography 36 BS EN 1253-2:2015 EN 1253-2:2015 (E) 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 BS EN 1253-2:2015 EN 1253-2:2015 (E) 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 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 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 to entry: See Figure Note 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 to entry: See Figure 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 BS EN 1253-2:2015 EN 1253-2:2015 (E) Key grating/frame, leaf/gravel trap liquid applied roof waterproofing kit or flexible sheet for waterproofing extension seal connecting flange body outlet Figure — Roof drain (example) BS EN 1253-2:2015 EN 1253-2:2015 (E) Key grating body connecting flange liquid applied roof waterproofing kit or flexible sheet for waterproofing outlet (round or rectangular) Figure — 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 Key h head of water Figure — Head of water 3.7 grating removable component with apertures which permit the discharge of water BS EN 1253-2:2015 EN 1253-2:2015 (E) 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 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 BS EN 1253-2:2015 EN 1253-2:2015 (E) 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 to entry: See Figure Key grating outlet body Figure — Floor gully without trap (typical example) BS EN 1253-2:2015 EN 1253-2:2015 (E) Dimensions in millimetres a) b) Key a) parapet drain, horizontal b) parapet drain, vertical membrane assembly line in test apparatus down pipe flow meter regulating valve water tank (round or square) measuring tube for head of water anti-vortex inlet h head of water (see Table 3) Figure 11 — Test arrangement for measuring flow rates of parapet drains The tank may be round or square Its diameter or side lengths shall be at least 1,00 m 24 BS EN 1253-2:2015 EN 1253-2:2015 (E) Water supply shall be through the anti-vortex inlet The measuring point for the accumulation height shall be (500 ± 5) mm from the middle of the parapet drain at two opposite points 5.5.3.2 Procedure The test may be carried out with or without a plate If a plate is used, it shall be provided by the party requesting the test When installed into a plate, the upper edge of the grating frame shall not be lower than the upper edge of the plate The zero point for measuring the accumulation height shall be constituted by the upper edge of the weir/overfall, e.g the upper edge of the loose flange The reference height is thus the total accumulation height as measured from the upper edge of the plate or loose flange The nominal size of the discharge pipe shall correspond to the nominal size of the outlet of the parapet drain The flow rate is obtained from the maximum possible inflow at a head of water h in accordance with Figure 11, constant over a period of 10 in accordance with the requirements specified in Table The performance curve shall be determined in accordance with 5.5.2.2 5.5.4 5.5.4.1 Roof drains and parapet drains for siphonic drainage Test arrangement The test arrangement shall be in accordance with Figure 12, a) or Figure 12, b), except parapet drains see Figure 11 25 BS EN 1253-2:2015 EN 1253-2:2015 (E) Dimensions in millimetres a) b) Key a) roof drain, horizontal connecting pipe and down pipe (unvented) with DN the same as that of the roof spigot b) roof drain, vertical level of the flange or the edge of the roof drain flow meter regulating valve in down pipe (optional) regulating valve anti-vortex inlet measuring tube for head of water h head of water (see Table 3) water tank (round or square) Figure 12 — Test arrangement for measuring flow rates of siphonic roof drains 26 BS EN 1253-2:2015 EN 1253-2:2015 (E) The tank may be round or square Its diameter or side lengths shall be at least 1,75 m The roof drain or parapet drain shall be installed in a central and vertical position Water supply shall be through the anti-vortex inlet The measuring point for the accumulation height shall be (500 ± 5) mm from the middle of the roof drain or parapet drain at two opposite points 5.5.4.2 Procedure The test may be carried out with or without a plate to simulate a roof surface If a plate is used, it shall be provided by the party requesting the test When installed into a plate, the upper edge of the grating frame shall not be lower than the upper edge of the plate The zero point for measuring the accumulation height shall be constituted by the upper edge of the weir/overfall, e.g the upper edge of the loose flange The reference height is thus the total accumulation height as measured from the upper edge of the plate or loose flange The flow rate in a completely filled state shall be kept constant over a period of 50+1 Complete filling shall be considered to be reached at the point where, with increasing pressure head, no further increase in performance is to be expected and no further noticeable entry of air can be observed at the outlet or inside the pipe system A glass pipe is required for observation purposes The test may be performed with or without a valve at the end of the down pipe in order to determine the various flow rates and the respective accumulation heights If no valve is used, the dimension of the down pipe shall correspond to the dimension of the outlet, and the length of the down pipe shall be in accordance with Figure 12, a) or Figure 12, b) If a valve is used, the dimension and length of the down pipe should be chosen such that the roof drain or parapet drain reaches the maximum performance to be expected for the completely filled state The test shall be considered to have been passed, if the flow rate in accordance with Table can be maintained over a period of 50+1 with a maximum head of water not exceeding 55 mm The performance curve shall be determined as follows: — up to l in steps of l/s; — up to 22 l in steps of l/s The tolerance for the head of water may be ± mm 27 BS EN 1253-2:2015 EN 1253-2:2015 (E) 5.5.4.3 Coefficient of hydraulic loss The coefficient of hydraulic loss of the roof drain shall be determined by using the test arrangement in accordance with Figure 13 for the roof outlet without and also with extension and calculated by Formula (1) or Formula (2): ξG = ξG = h1ρ g − p2 − v2 ρ − l1R (1) v2 ρ h ρ g − p2 + p3 − v ρ v ρ , if l1 = l2 (2) where ξG is the coefficient of hydraulic loss; 28 h1 is the height difference between point (1) and point (2), in m; ρ is the density of water, here 1,0 kg/dm ; g is the gravitational acceleration, here 9,81 m/s ; p2 is the pressure measured at point (2), in kPa; v is the velocity of the flow, in m/s; l1 is the height difference between the upper edge of the roof outlet and point (2), in m; R is the friction loss of the pipe, depending on the inner roughness; h is the head of water, in m; p3 is the pressure measured at point (3), in kPa; l2 is the height difference between points (2) and (3), in m BS EN 1253-2:2015 EN 1253-2:2015 (E) Key head of water lower point of distance l1 lower point of distance l2 roof surface Figure 13 — Test arrangement for determining the coefficient of hydraulic loss 29 BS EN 1253-2:2015 EN 1253-2:2015 (E) 5.6 Tightness of roof drains and floor gullies for use with sheet floor coverings, membranes or liquid applied membranes The test box and the vacuum box for creating the negative pressure are shown in Figure 14 Key appliance for bracing/pressing the items 2, 5, 6, 8, 10 cover of transparent material (e.g methyl-methacrylate) connecting branch for stop valve(s) for applying the pressure/vacuum connecting branch for pressure measuring device seal side wall of test box support to avoid the lifting of test piece during vacuum test membrane/liquid applied waterproofing kit connecting flange of extension/gully 10 moisture detector 11 mounting plate 12 closed outlet of test piece 13 body 14 water level Figure 14 — Vacuum box (example) Mount the roof drain or floor gully at the bottom of the test box in accordance with the manufacturer's instructions and seal the outlet Cover the entire internal bottom surface of the test box in accordance with Figure 14 with sheet floor covering or a membrane If the roof drain or floor gully is designed for a number of different thicknesses of sheet floor covering or membranes, tests for greatest and smallest thicknesses shall be carried out When installing the sheet floor covering, the instructions provided by the sheet floor or membrane manufacturer shall be followed In the case of systems with two sealing levels and connecting flanges with identical construction, only one of the two flanges needs to be tested 30 BS EN 1253-2:2015 EN 1253-2:2015 (E) The frame, consisting of the four side walls of the test box, is placed onto the bottom plate such that a tight connection to the bottom plate is established The resulting box is filled with cold water up to a water level of 100 mm above the sealing level To avoid vertical movement of the roof drain or floor gully, it may be necessary to insert a support leading to the cover of the test box (see Figure 14) After the test box has been closed in a tight manner with the transparent cover, a pressure of −10 kPa for floor gullies as well as balcony drains with LARWK and −20 kPa for roof drains shall be established inside the box For the duration of 100+1 the test arrangement shall be observed for the formation of bubbles keeping the pressure at −10 kPa for floor gullies as well as balcony drains with LARWK and −20 kPa for roof drains If no visible bubbles are detected after 100+1 min, the vacuum shall be released After 24 h under atmospheric pressure, the roof drain or floor gully shall be inspected underneath and inside the vacuum box If there is no leakage, the roof drain or floor gully is considered as watertight 5.7 Behaviour when exposed to hot bitumen or asphalt Mount the roof drain or floor gully at the bottom of the test box in accordance with the manufacturer's installation instructions and seal the outlet Arrange the flange horizontally, with the roof drain or floor gully inlet closed (grating replaced by cover), and pour oil heated to (220 ± 5) °C over the flange to cover it, and allow to rest for This test shall be carried out at ambient temperature of 15 °C to 20 °C Check to ensure that there is no deformation or change in surface texture impairing the fitness for use The test does not apply to roof drains or floor gullies of any metallic materials 5.8 Determination of resistance in climatic influences a) Pre-treat the specimens by storing them for 48 h in water of a temperature of (15 ± 2) °C; b) Subject the pre-treated specimens directly to five continuous freeze–thaw cycles according to the following schedule: c) 1) conditioning in a freezing chamber for at least h at (−20 ± 2) °C; 2) thawing in water at a temperature of (15 ± 2) °C; 3) allow to rest in water for at least h; 4) check the specimens for defects due to frost Immediately subject the specimens to five hot-cold cycles according to the following schedule: 1) conditioning to a temperature of not less than (80 ± 2) °C for h; 2) cooling to ambient temperature; 3) check the specimens for any defects due to combined stress 31 BS EN 1253-2:2015 EN 1253-2:2015 (E) 5.9 Temperature cycling test Mount the floor gully in accordance with Figure 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 most unfavourable of their combinations Admit water through the grating or, if this is not possible, through the side inlet(s) as follows: a) (0,5 ± 0,05) l/s of hot water at (93 ± 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 500 times (100 h) 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 Allocation and sequence of tests The allocation and sequence for the tests of roof drains and floor gullies are given in Annex A Marking Roof drains and floor gullies and their components shall bear the following clear and durable markings, for example, cast on, by engraving, painting, stamping or labelling (including electronic recognition labelling) in accordance with Table 8: a) EN 1253-2; b) name and/or mark of the manufacturer; c) period of manufacture (coded or not); d) identification of independent certification body, where applicable; e) identification of DN (OD or ID); f) load class 32 BS EN 1253-2:2015 EN 1253-2:2015 (E) Table — Location of marking of roof drains and floor gullies Itemsc Body Grating X — — X — — X a — — b X X Name and/or mark of manufacturer X Period of manufacture Load class DN Packaging/ installation instruction a EN 1253–2 X a a If possible b For the classes H and K the marking is optional X a Components — X X — X c Further marking may be added (e.g for the application) The marking shall be visible where possible, after the unit has been installed If the application of the marking would be detrimental to the production and/or functioning of the product, the marking shall be included on the packaging Evaluation of conformity The evaluation of conformity shall be provided as given in EN 1253-3 33 BS EN 1253-2:2015 EN 1253-2:2015 (E) Annex A (normative) Sequence of the tests Where applicable, the tests shall be carried out in the sequence specified, and each test shall be carried out on the same test specimen Floor gullies: 5.2 — 5.9 — 5.2 — 5.4.2 Roof drains: 5.2 — 5.8 — 5.2 — 5.4.2 Floor gullies for the use with sheet floor coverings, membranes or liquid applied membranes: 5.4.1 — 5.6 — 5.9 — 5.4.1 — 5.6 Extensions: 5.8 — 5.2 If the test sequence is interrupted, testing shall restart from the beginning 34 BS EN 1253-2:2015 EN 1253-2:2015 (E) Annex B (informative) A-deviation A-deviation: National deviation due to regulations, the alteration of which is for the time being outside the competence of the CEN member This European Standard does not fall under any Directive of the EU In the relevant CEN countries this Adeviation is valid instead of the provisions of the European Standard until it has been removed With regard to this European Standard, the national A-deviation has been requested by Denmark with reference to the following national regulation: Danish Building Regulation BR 2010 (published by the National Building and Housing Agency) Clauses 4.5.1 Loading strength According to Danish Building Regulation DS 432, 2.3.10, gratings, used in areas where it is a requirement that rats shall not be allowed to pass through floor gullies, shall be fastened with screws or in some other way Gratings and materials from which they are made shall not be destroyed or penetrated by rats and shall pass the following test The floor gully shall be placed as prescribed in 5.3.4 The grating shall be loaded in the centre or at the inner edge with a force of 20 N acting perpendicular to the surface and in the opposite direction in which the grating is mounted The grating shall not loose firm contact to the body in any situation 35 BS EN 1253-2:2015 EN 1253-2:2015 (E) Bibliography EN 1253-1, Gullies for buildings — Part 1: Trapped floor gullies with a depth of water seal of at least 50 mm EN 16323:2014, Glossary of wastewater engineering terms 36 This page deliberately left blank NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW British Standards Institution (BSI) BSI is the national body responsible for preparing British Standards and other standards-related publications, information and services BSI is incorporated by Royal Charter British Standards and other standardization products are published by BSI Standards Limited About us Revisions We bring together business, industry, government, consumers, innovators and others to shape their combined experience and expertise into standards -based solutions Our British Standards and other publications are updated by amendment or revision The knowledge embodied in our standards has been carefully assembled 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