1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12056-2:2000 The Eu
2、ropean Standard EN 12056-2:2000 has the status of a British Standard ICS 91.140.70; 91.140.80 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Gravity drainage systems inside buildings Part 2: Sanitary pipework, layout and calculationThis British Standard, having been prepared
3、under the direction of the Sector Committee for Building and Civil Engineering, was published under the authority of the Standards Committee and comes into effect on 15 September 2000 BSI 09-2000 ISBN 0 580 36487 9 BS EN 12056-2:2000 Amendments issued since publication Amd. No. Date Comments Nationa
4、l foreword This British Standard is the official English language version of EN 12056-2:2000. It supersedes BS 5572:1994 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee B/505, Wastewater engineering, to Subcommittee B/505/21, Roof drainage and sanitar
5、y pipework, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate th
6、em in the UK. The national annexes are an informative element of this British Standard and contain information provided for easier implementation of EN 12056-2:2000 in the United Kingdom, within the framework envisaged by the scope of the European Standard. Users are reminded that only the normative
7、 elements of the adopted European Standard set out the provisions to which it is necessary to conform in order to form part of a trade description when citing this British Standard by number or when compliance with it is claimed. A list of organizations represented on this subcommittee can be obtain
8、ed on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” fac
9、ility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal oblig
10、ations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 85 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12056-2 June
11、2000 ICS 91.140.80 English version Gravity drainage systems inside buildings - Part 2: Sanitary pipework, layout and calculation Rseaux dvacuation gravitaire lintrieur des btiments - Partie 2: Systmes pour les eaux uses, conception et calculs Schwerkraftentwsserungsanlagen innerhalb von Gebuden - Te
12、il 2: Schmutzwasseranlagen, Planung und Berechnung This European Standard was approved by CEN on 27 October 1999. 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 a
13、lteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by tr
14、anslation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Irelan
15、d, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 B-1050 Brussels 2000 CEN All rights of exploitation in any
16、 form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12056-2:2000 EPage 2 EN 12056-2:2000 BSI 09-2000 Foreword 5 1 Scope 6 2 Normative references 6 3 Definitions 6 3.1 General 6 3.1.1 Waste water 6 3.1.2 Domestic waste water 7 3.1.3 Trade effluent 7 3.1.4 Grey water 7 3.1.
17、5 Black water 7 3.1.6 Rainwater 7 3.1.7 Flood level 7 3.1.8 Drainage system 7 3.1.9 Combined system 7 3.1.10 Separate system 7 3.2 Pipes and fittings 7 3.2.1 Sanitary pipework 7 3.2.2 Nominal diameter (DN) 7 3.2.3 Internal diameter (d i )7 3.2.4 External diameter (d a )7 3.2.5 Minimum internal diame
18、ter (d i min )7 3.2.6 Branch discharge pipe 7 3.2.7 Square entry 7 3.2.8 Swept entry 7 3.2.9 Connection bend 7 3.2.10 Discharge stack 7 3.2.11 Stack offset 8 3.2.12 Drain 8 3.2.13 Filling degree 8 3.3 Ventilating pipework 8 3.3.1 Ventilating pipe 8 3.3.2 Branch ventilating pipe 8 3.3.3 Stack vent 8
19、3.3.4 Ventilating stack 8 3.3.5 Air admittance valve 8 3.4 Appliances 8 3.4.1 Domestic sanitary appliances 8 3.4.2 Non-domestic sanitary appliances 8 3.4.3 Floor gully 8 3.4.4 Trap 8 3.4.5 Depth of water seal (H)8 3.5 Calculation 9 3.5.1 Discharge unit (DU) 9 3.5.2 Frequency factor (K) 9 3.5.3 Waste
20、 water flow rate (Q ww )9 3.5.4 Continuous flow rate (Q c )9 3.5.5 Pumped water flow rate (Q p )9 3.5.6 Total flow rate (Q tot )9Page 3 EN 12056-2:2000 BSI 09-2000 3.5.7 Hydraulic capacity (Q max )9 3.5.8 Air flow rate (Q a )9 4 System configurations 9 4.1 General 9 4.2 System types 10 4.3 Configura
21、tions 10 4.3.1 Primary ventilated system configurations 10 4.3.2 Secondary ventilated system configurations 11 4.3.3 Unventilated discharge branch configurations 12 4.3.4 Ventilated discharge branch configurations 13 5 Layout rules 14 5.1 Compliance with European Standards 14 5.2 Protection against
22、flooding 14 5.3 Odour 14 5.4 Trap seal 14 5.5 Reduction of nominal diameter 15 5.6 Ventilation 15 5.7 Air admittance valves 15 6 Calculation 15 6.1 General 15 6.2 Basic data 15 6.2.1 Pipe diameter 15 6.2.2 Discharge units 15 6.2.3 Discharge from non-domestic sanitary appliances 16 6.3 Calculation of
23、 flowrate 16 6.3.1 Waste water flowrate (Q ww )1 6 6.3.2 Frequency factor (K)1 6 6.3.3 Total flowrate (Q tot )1 7 6.3.4 Calculation rules 17 6.4 Layout of branches 17 6.4.1 Unventilated discharge branches 17 6.4.2 Ventilated discharge branches 19 6.4.3 Air admittance valves for branches 22 6.5 Layou
24、t of discharge stacks 22 6.5.1 Primary ventilated discharge stacks 22 6.5.2 Secondary ventilated discharge stacks 23 6.5.3 Air admittance valves for stacks 23 6.5.4 Ventilating pipework 23 6.6 Layout of drains 24Page 4 EN 12056-2:2000 BSI 09-2000 6.6.1 General 24 Annex A (informative) 25 A.1 Nationa
25、l and local regulations and practice 25 Annex B (informative) 30 B.1 Capacities of drains 30 B.2 Values of waste water flow rates 30 Annex C (informative) 32 C.1 Calculation example 32 C.2 Data and parameters 32 C.3 Sum of discharge units 32 C.4 Calculation of the stack size 33 C.5 Calculation of th
26、e drain sizes 33 Annex D (informative) 35 D.1 European Standards of commonly used products and additional European Standards in the field of waste water systems 35Page 5 EN 12056-2:2000 BSI 09-2000 Foreword This European Standard has been prepared by Technical Committee CEN/TC 165, Waste water engin
27、eering, 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 December 2000, and conflicting national standards shall be withdrawn at the latest by June 2001. Th
28、is is the second part in a series of the following five parts: Part 1: General and performance requirements; Part 2: Sanitary pipework, layout and calculation; Part 3: Roof drainage, layout and calculation; Part 4: Waste water lifting plants, layout and calculation; Part 5: Installation and testing
29、of drainage systems, instructions for operation, maintenance and use. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany,
30、 Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Page 6 EN 12056-2:2000 BSI 09-2000 1 Scope This European Standard applies to waste water drainage systems which operate under gravity. It is applicable for drainage systems
31、inside dwellings, commercial, institutional and industrial buildings. Differences in plumbing within Europe have led to a variety of systems being developed. Some of the major systems in use are described but this standard has not attempted to detail the intricacies of each system. Detailed informat
32、ion additional to that contained in this standard may be obtained by referring to the technical documents listed in annex A. This second part of the standard sets out principles which shall be followed for both layout and calculation. It makes limited provision for drainage systems conveying trade e
33、ffluent and also makes limited provision for fluids removed by pumps. All drawings in the standard are given as examples and are not intended to exclude any other system configuration. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other pub
34、lications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revis
35、ion. For undated references the latest edition of publication referred to applies. EN 12056-1: Gravity drainage systems inside buildings - Part 1: General and performance requirements. EN 12056-3: Gravity drainage systems inside buildings - Part 3: Roof drainage, layout and calculation. EN 12056-4:
36、Gravity drainage systems inside buildings - Part 4: Waste water lifting plants, layout and calculation. EN 12056-5 Gravity drainage systems inside buildings - Part 5: Installation and testing, instructions for operation, maintenance and use. EN 752 Drain and sewer systems outside buildings. prEN 123
37、80 Ventilating pipework - Air admittance valve systems (AVS). 3 Definitions For the purpose of this European Standard, the following definitions apply. 3.1 General 3.1.1 waste water water which is contaminated by use and all water discharging into the drainage system, e.g. domestic and trade effluen
38、t, condensate water and also rainwater when discharged in a waste water drainage systemPage 7 EN 12056-2:2000 BSI 09-2000 3.1.2 domestic waste water water which is contaminated by use and normally discharged from WC, shower, bath, bidet, wash basin, sink, floor gully 3.1.3 trade effluent water after
39、 industrial use and processes contaminated/polluted water including cooling water 3.1.4 grey water waste water not containing faecal matter or urine 3.1.5 black water waste water containing faecal matter or urine 3.1.6 rainwater water resulting from natural precipitation that has not been deliberate
40、ly contaminated 3.1.7 flood level the maximum level to which waste water can rise within a drainage system 3.1.8 drainage system a system composed of drainage equipment, and other components collecting waste water and discharging by means of gravity; effluent lifting plant may be part of a gravity d
41、rainage system 3.1.9 combined system a drainage system for both rain and waste water in a single pipe 3.1.10 separate system a drainage system for draining rain and waste water separately by dedicated pipework 3.2 Pipes and fittings 3.2.1 sanitary pipework arrangement of discharge pipework, with or
42、without ventilating pipes, connected to a drainage system NOTE For the purposes of this standard, “pipework” include pipes and fittings. 3.2.2 nominal diameter (DN) numerical designation of size which is a convenient round number approximately equal to the diameter in mm 3.2.3 internal diameter (d i
43、 ) mean internal diameter of the pipe barrel at any cross-section 3.2.4 external diameter (d a ) mean external diameter of the pipe barrel at any cross-section 3.2.5 minimum internal diameter (d i min ) smallest internal diameter allowed with maximum tolerance 3.2.6 branch discharge pipe pipe connec
44、ting sanitary appliances to a discharge stack or drain 3.2.7 square entry equal branch junction that is more than 45, or has a centre line radius less than the internal pipe diameter 3.2.8 swept entry equal branch junction that is at 45 or less, or has a centre line radius not less than the internal
45、 pipe diameter 3.2.9 connection bend first fitting in direction of flow after trap outlet 3.2.10 discharge stack main (generally vertical) pipe, conveying discharges from sanitary appliancesPage 8 EN 12056-2:2000 BSI 09-2000 3.2.11 stack offset non-vertical part of a discharge stack 3.2.12 drain nea
46、r horizontal pipe suspended within a building or buried in the ground to which stacks or ground floor appliances are connected 3.2.13 filling degree proportion of water depth (h) to the inside diameter (d i ) 3.3 Ventilating pipework 3.3.1 ventilating pipe pipe provided to limit the pressure fluctua
47、tions within the discharge pipe system 3.3.2 branch ventilating pipe ventilating pipe connected to a branch discharge pipe 3.3.3 stack vent extension of a vertical discharge pipe above the highest branch discharge pipe connection that terminates in an end, open to the atmosphere 3.3.4 ventilating st
48、ack Main vertical ventilating pipe, connected to a discharge stack, to limit pressure fluctuations within the discharge stack 3.3.5 air admittance valve valve that allows air to enter the system but not to escape in order to limit pressure fluctuations within the sanitary pipework 3.4 Appliances 3.4
49、.1 domestic sanitary appliances fixed appliances supplied with water and used cleaning or washing. For example: baths, showers, wash basins, bidets, WCs, urinals, sinks, dishwashers, washing machines 3.4.2 non-domestic sanitary appliances special sanitary appliances used in commercial kitchens, laundries, laboratories, hospitals, hotels, swimming-pools, etc. 3.4.3 floor gully discharge fitting intended to receive water from floors either through apertures in a grating or from pipes connected to the body of the gully. A gully may include a trap 3.4.
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