BS EN 12056-2-2000 建筑物内部的自流排水系统.卫生管道设计和计算(Gravity drainage systems inside buildings - Sanitary pipework, layout and calculation).pdf

| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12056-22000 The European Standard EN 12056-22000 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 calculation Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI This British Standard, having been prepared 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 12056-22000 Amendments issued since publication Amd. No.DateComments National foreword This British Standard is the official English language version of EN 12056-22000. It supersedes BS 55721994 which is withdrawn.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 sanitary 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 ined; monitor related international and European developments and promulgate them in the UK. The national anns are an inative element of this British Standard and contain ination provided for easier implementation of EN 12056-22000 in the United Kingdom, within the framework envisaged by the scope of the European Standard. Users are reminded that only the normative elements of the adopted European Standard set out the provisions to which it is necessary to con in order to 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 obtained 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 facility 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 obligations. 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. Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12056-2 June 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 - Teil 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 alteration. 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 translation 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, Ireland, 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 CENAll rights of exploitation in any and by any means reserved worldwide for CEN national Members. Ref. No. EN 12056-22000 E Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI Page 2 EN 12056-22000 BSI 09-2000 Foreword5 1Scope6 2Normative references6 3Definitions6 3.1General6 3.1.1Waste water6 3.1.2Domestic waste water7 3.1.3Trade effluent7 3.1.4Grey water7 3.1.5Black water7 3.1.6Rainwater7 3.1.7Flood level7 3.1.8Drainage system7 3.1.9Combined system7 3.1.10 Separate system7 3.2Pipes and fittings7 3.2.1Sanitary pipework7 3.2.2Nominal diameter DN7 3.2.3Internal diameter di7 3.2.4External diameter da7 3.2.5Minimum internal diameter di min7 3.2.6Branch discharge pipe7 3.2.7Square entry7 3.2.8Swept entry7 3.2.9Connection bend7 3.2.10 Discharge stack7 3.2.11 Stack offset8 3.2.12 Drain8 3.2.13 Filling degree8 3.3Ventilating pipework8 3.3.1Ventilating pipe8 3.3.2Branch ventilating pipe8 3.3.3Stack vent8 3.3.4Ventilating stack8 3.3.5Air admittance valve8 3.4Appliances8 3.4.1Domestic sanitary appliances8 3.4.2Non-domestic sanitary appliances8 3.4.3Floor gully8 3.4.4Trap8 3.4.5Depth of water seal H8 3.5Calculation9 3.5.1Discharge unit DU9 3.5.2Frequency factor K9 3.5.3Waste water flow rate Qww9 3.5.4Continuous flow rate Qc9 3.5.5Pumped water flow rate Qp9 3.5.6Total flow rate Qtot9 Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI Page 3 EN 12056-22000 BSI 09-2000 3.5.7Hydraulic capacity Qmax9 3.5.8Air flow rate Qa9 4System configurations9 4.1General9 4.2System types10 4.3Configurations10 4.3.1Primary ventilated system configurations10 4.3.2Secondary ventilated system configurations11 4.3.3Unventilated discharge branch configurations12 4.3.4Ventilated discharge branch configurations13 5Layout rules14 5.1Compliance with European Standards14 5.2Protection against flooding14 5.3Odour14 5.4Trap seal14 5.5Reduction of nominal diameter15 5.6Ventilation15 5.7Air admittance valves15 6Calculation15 6.1General15 6.2Basic data15 6.2.1Pipe diameter15 6.2.2Discharge units15 6.2.3Discharge from non-domestic sanitary appliances16 6.3Calculation of flowrate16 6.3.1Waste water flowrate Qww16 6.3.2Frequency factor K16 6.3.3Total flowrate Qtot17 6.3.4Calculation rules17 6.4Layout of branches17 6.4.1Unventilated discharge branches17 6.4.2Ventilated discharge branches19 6.4.3Air admittance valves for branches22 6.5Layout of discharge stacks22 6.5.1Primary ventilated discharge stacks22 6.5.2Secondary ventilated discharge stacks23 6.5.3Air admittance valves for stacks23 6.5.4Ventilating pipework23 6.6Layout of drains24 Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI Page 4 EN 12056-22000 BSI 09-2000 6.6.1General24 Annex A inative25 A.1 National and local regulations and practice25 Annex B inative30 B.1 Capacities of drains30 B.2 Values of waste water flow rates30 Annex C inative32 C.1 Calculation example32 C.2 Data and parameters32 C.3 Sum of discharge units32 C.4 Calculation of the stack size33 C.5 Calculation of the drain sizes33 Annex D inative35 D.1 European Standards of commonly used products and additional European Standards in the field of waste water systems35 Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI Page 5 EN 12056-22000 BSI 09-2000 Foreword This European Standard 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 December 2000, and conflicting national standards shall be withdrawn at the latest by June 2001. This is the second part in a series of the following five parts Part 1General and perance requirements; Part 2Sanitary pipework, layout and calculation; Part 3Roof drainage, layout and calculation; Part 4Waste water lifting plants, layout and calculation; Part 5Installation and testing 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, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI Page 6 EN 12056-22000 BSI 09-2000 1 Scope This European Standard applies to waste water drainage systems which operate under gravity. It is applicable for drainage systems 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 ination 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 effluent 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 publications. 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 revision. For undated references the latest edition of publication referred to applies. EN 12056-1Gravity drainage systems inside buildings - Part 1 General and perance requirements. EN 12056-3Gravity drainage systems inside buildings - Part 3 Roof drainage, layout and calculation. EN 12056-4Gravity drainage systems inside buildings - Part 4 Waste water lifting plants, layout and calculation. EN 12056-5Gravity drainage systems inside buildings - Part 5 Installation and testing, instructions for operation, maintenance and use. EN 752Drain and sewer systems outside buildings. prEN 12380Ventilating 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 effluent, condensate water and also rainwater when discharged in a waste water drainage system Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI Page 7 EN 12056-22000 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 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 deliberately 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 drainage 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 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 di mean internal diameter of the pipe barrel at any cross-section 3.2.4 external diameter da mean external diameter of the pipe barrel at any cross-section 3.2.5 minimum internal diameter di min smallest internal diameter allowed with maximum tolerance 3.2.6 branch discharge pipe pipe connecting 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 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 appliances Licensed copyRMJM, 29/08/2005, Uncontrolled Copy, BSI Page 8 EN 12056-22000 BSI 09-2000 3.2.11 stack offset non-vertical part of a discharge stack 3.2.12 drain near 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 di 3.3 Ventilating pipework 3.3.1 ventilating pipe pipe provided to limit the pressure fluctuations 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 stack 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 3.4.1 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 sa