1、BRITISH STANDARD BS 4660:2000 Incorporating Corrigenda Nos. 1 and 2 Thermoplastics ancillary fittings of nominal sizes 110 and 160 for below ground gravity drainage and sewerage ICS 83.140.30; 91.140.80; 93.030 BS 4660:2000 This British Standard, having been prepared under the direction of the Secto
2、r Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 January 2000 BSI 9 December 2002 The following BSI references relate to the work on this standard: Committee reference PRI/61/1 Draft for comment 99/121346 DC ISBN 0 580
3、33092 3 Committees responsible for this British Standard The preparation of this British Standard was entrusted by Technical Committee PRI/61, Plastics piping systems and components, to Subcommittee PRI/61/1, Thermoplastics piping systems and components for non-pressure applications, upon which the
4、following bodies were represented: British Adhesives and Sealants Association British Plastics Federation DETR British Board of Agreement DETR Building Research Establishment DETR Central Transport Group DOE for Northern Ireland Health and Safety Executive Institute of Building Control Institute of
5、Plumbing Land Drainage Contractors Association National Association of Plumbing, Heating and Mechanical Services Contractors Plastics Land Drainage Manufacturers Association Water UK Amendments issued since publication Amd. No Date Comments 10875 Corrigendum No. 1 March 2000 Indicated by a sideline
6、13946 Corrigendum No. 2 9 December 2002 Change to 6.3.1BS 4660:2000 BSI 9 December 2002 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative references 1 3T e r m s a n d d e f i n i t i o n s 2 4M a t e r i a l s 2 5A p p e a r a n c e 3 6D i m e n s i o n
7、s 3 7 Physical properties 4 8 Performance characteristics 5 9M a r k i n g 5 Annex A (normative) Method of test for the impact resistance of polyolefin fittings 7 Annex B (normative) Method of test for water seal 8 Annex C (informative) Guidance on quality control testing 9 Bibliography 10 Figure 1
8、Typical channel fittings 6 Table C.1 Applicability of requirements and test methods 9BS 4660:2000 ii BSI 9 December 2002 Foreword This British Standard has been prepared by Subcommittee PRI/61/1. It supersedes BS 4660:1989 which is withdrawn. The nominal sizes of the fittings covered by this standar
9、d are 110 and 160, in accordance with BS 2782-11:Method 1121B:1998 (ISO 161-1:1996). The major changes between this edition and the previous edition are as follows. a) Pipes, bends, branches and couplers have been removed and are covered in BS EN 1401-1:1998. This edition specifies ancillary access
10、fittings not covered by BS EN 1401-1:1998. b) Dimensions and requirements for joint sockets, including seal-retaining components, have been clarified and the minimum wall thickness of sockets has been brought into line with BS EN 1401-1:1998. c) The title and scope have been modified, from “Unplasti
11、cized poly(vinyl chloride) (PVCU) fittings ” to “Thermoplastics ancillary access fittings ”, to recognize the fact that this standard does (and always has) specified some requirements for certain fittings of thermoplastics materials other than PVC-U. Annex A, which is normative, specifies a method o
12、f test for the impact resistance of polyolefin fittings. Annex B, which is normative, specifies a method of test for the water seal of a trapped gully. Annex C, which is informative, gives guidance on quality control testing. A bibliography is included. Attention is drawn to ENV 1401-3, BS 5955-6, B
13、S EN 1610 and BS EN 752, which give guidance on storage, handling and installation. Attention is drawn to controls and guidance embodied in building regulations and associated documents, such as The Building Regulations 1991 (Amended 1992), Part H: Drainage and waste disposal approved documents, whi
14、ch is applicable in England and Wales. Product certification/inspection/testing. Users of this British Standard are advised to consider the desirability of third-party certification/inspection/testing of product conformity to this British Standard. Appropriate conformity attestation arrangements are
15、 described in BS EN 45011. Users seeking assistance in identifying appropriate conformity assessment bodies or schemes may ask BSI to forward their enquiries to the relevant association. Attention is drawn to the provisions of the Health and Safety at Work etc. Act 1974 and the need to ensure that a
16、ppropriate precautions are taken to ensure the safety of personnel when carrying out methods of test required by this standard. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standa
17、rd does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 10, an inside back cover and a back cover. The BSI copyright notice displayed throughout this document indicates when the document w
18、as last issued.BS 4660:2000 BSI 9 December 2002 1 1 Scope This British Standard specifies requirements for thermoplastics ancillary access fittings suitable for the construction of gravity drains and sewers, other than conventional branches, bends and couplers which are covered in BS EN 1401-1:1998.
19、 It is applicable to access fittings with nominal sizes of 110 and 160 together with necessary joints and accessories. Methods of test, associated guidance and information on quality control testing are given in Annex A, Annex B and Annex C. 2 Normative references The following normative documents c
20、ontain provisions which, through reference in this text, constitute provisions of this British Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this British Standard are encouraged to investigat
21、e the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the publication referred to applies. BS 2782-11:Method 1101A, Methods of testing plastics Thermoplastics pipes, fittings and valves Measurement of dimensio
22、ns of pipes. BS 2782-11:Method 1108C:1996, Plastics piping and ducting system Thermoplastics pipes Test method for resistance to external blows by the round-the-clock method. (BS EN 744:1996) BS 2782-11:Method 1109A, Methods of testing plastics Thermoplastics pipes, fittings and valves Resistance to
23、 environmental stress cracking of polyethylene pipes and fittings for non-pressure applications. BS 2782-11:Method 1112B, Plastics piping systems Thermoplastics piping systems for non-pressure applications Test method for watertightness. (BS EN 1053:1996) BS 2782-11:Methods 1112L, M, N and Q:1996, P
24、lastics piping systems Thermoplastics piping systems for buried non-pressure applications Test methods for leaktightness of elastomeric sealing ring joints. (BS EN 1277:1996) BS 3412:1992, Methods of specifying general purpose polyethylene materials for moulding and extrusion. BS 4346-3, Specificati
25、on for solvent cement. BS 5139:1991, Method of specifying general purpose polypropylene and propylene copolymer materials for moulding and extrusion. BS 5572, Code of practice for sanitary pipework. BS 5955-6, Code of practice for plastics pipework (thermoplastics materials) Part 6: Installation of
26、unplasticized PVC pipework for gravity drains and sewers. BS 6100-3-3.3, Glossary of building and civil engineering terms Part 3: Services Section 3.3: Sanitation. BS 6209, Specification for solvent cement for non-pressure thermoplastics pipe systems. BS EN 681-1:1996, Elastomeric seals Material req
27、uirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber. BS EN 752-1:1996, Drain and sewer systems outside buildings Part 1: Generalities and definitions. BS EN 752-2:1997, Drain and sewer systems outside buildings Part 2: Performance requirements. BS EN 752-
28、3:1997, Drain and sewer systems outside buildings Part 3: Planning. BS EN 1401-1:1998, Plastics piping systems for non-pressure underground drainage and sewerage Unplasticized poly(vinyl chloride) (PVC-U) Part 1: Specification for pipes, fittings and the system. BS EN 1253-2:1999, Gullies for buildi
29、ngs Part 2: Test methods. BS ISO 472:1988, Plastics Vocabulary.BS 4660:2000 2 BSI 9 December 2002 3 Terms and definitions For the purposes of this British Standard, the terms and definitions given in BS 5572, BS 6100-3-3.3, BS EN 752-1:1996, BS EN 752-2:1997, BS EN 752-3:1997, BS EN 1401-1:1998 and
30、BS ISO 472 and the following apply. 3.1 access fitting fitting to provide access for rodding in more than one direction and for testing NOTE On a buried drain it is used in one of three ways: a) as an opening in the top of a drain having a sealed cover and a separate cover bedded at surface level; b
31、) with a raising piece terminating with a suitable cover at surface level; c) with a sealed cover located within an inspection chamber or manhole. 3.2 adaptor fitting to provide for connection between a fitting conforming to this specification and any other fitting or between a fitting conforming to
32、 this specification and a pipe 3.3 cleaning eye access opening in a pipe or pipe fitting arranged to facilitate cleaning or the clearing of obstructions within the pipe or fitting and fitted with a cap or plug 3.4 gully trapped fitting intended to receive discharge from domestic waste and rainwater
33、pipes 3.5 exposed fitting fitting which terminates at surface level with a cover or grating or which is designed for use entirely within an inspection chamber or manhole 3.6 fabricated fitting fitting produced by modification of a moulded or extruded component 3.7 rodding eye access opening having a
34、 removable cover to enable obstructions to be cleared by rodding 4 Materials 4.1 Fittings NOTE The design of systems using pipes and fittings made of different plastics should take account of any relevant differences in their properties, for example thermal expansion coefficients. 4.1.1 Fittings oth
35、er than exposed fittings Except for snap caps, which may also be produced from any other thermoplastics material, the material from which the fitting is produced shall comprise an unplasticized poly(vinyl chloride) (PVC-U) plastic, in each case incorporating or blended with other ingredients as nece
36、ssary to enable manufacture of a fitting conforming to the other requirements of this standard as applicable and specified accordingly. 4.1.2 Exposed fittings (see 3.5) NOTE 1 Fittings made using material in accordance with b) or c) are referred to collectively as polyolefin fittings. For the purpos
37、es of this standard their use is restricted to exposed fittings. The material from which the fitting is produced shall comprise one of the following plastics (see notes 1 and 2), incorporating or blended with other ingredients as necessary to enable the manufacture of a fitting conforming to the oth
38、er requirements of this standard as applicable.BS 4660:2000 BSI 9 December 2002 3 a) Unplasticized poly(vinyl chloride) (PVC-U) plastic, to be specified as either brown in accordance with 5.1 or black and otherwise in respect of other ingredients and/or properties as appropriate (see 7.1). b) Polyet
39、hylene (PE) plastic, to be specified as class W in accordance with BS 3412:1992, including the designation applicable to the method of processing to be used for the manufacture of the fitting and in respect of other ingredients and/or properties as appropriate. c) Polypropylene (PP) plastic or propy
40、lene plastic, to be specified in accordance with BS 5139:1991 as light-stablized and weather-stablized and black together with the designation applicable to the method of processing to be used for the manufacture of the fitting and in respect of other ingredients and/or properties as appropriate. NO
41、TE 2 For the purposes of this standard, PP is used to signify both polypropylene plastics and propylene plastics. 4.2 Adhesives If an adhesive is used to make a fabricated fitting of PVC-U, the adhesive shall conform to BS 6209 or BS 4346-3, as applicable. 4.3 Reworked material If reworked material
42、is added or used, it shall comprise the manufacturers own clean reworked material from products conforming to the requirements of this standard and to BS EN 1401-1 for the corresponding material for pipes or fittings, as applicable, and it shall be of the same type as and compatible with any materia
43、l to which it is added. 4.4 Elastomeric joint rings If elastomeric joint rings are incorporated or used in joints, they shall conform to the requirements of BS EN 681-1:1996 for type WC. 5 Appearance 5.1 Colour Except for some exposed fittings (see 4.1.2), the colour of fittings shall be brown. For
44、covers, frames and gratings, black shall be an alternative colour (see 4.1.2). 5.2 Structural features Except in so far as appropriate surfaces may be deliberately roughened for jointing to other materials, the surfaces of the fittings shall be clean, smooth and free from grooving and other features
45、 that would prevent conformity to Clauses 6, 7, 8 and 9 of this standard, as applicable. 6 Dimensions 6.1 General Measurement of dimensions of fittings shall be carried out in accordance with BS 2782-11: Method 1101A. 6.2 Nominal size The nominal size of the fitting shall be one of the sizes given i
46、n BS EN 1401-1:1998, Table 3. 6.3 Sockets and fittings 6.3.1 Wall thickness The dimensions and wall thickness of all sockets and fittings shall conform to the limits given for class SN4 in BS EN 1401-1:1998, Tables 3, 5, 6 and 8.BS 4660:2000 4 BSI 9 December 2002 6.3.2 Lengths The lengths of parts o
47、f sockets and spigots shall conform to the application limits given in BS EN 1401-1:1998, Table 5 and Table 8, except as follows. a) For joints fabricated or assembled by the manufacturer under workshop conditions, dimensions L 1,min.and L 2,min.may be reduced by up to 50 % of the values given in BS
48、 EN 1401-1:1998, Table 8. b) For reducers and plugs, the minimum length for L 1may be reduced by up to 50 %, provided that there is a stop to prevent entry beyond the seal zone. c) For rodding eyes and gully hoppers, the minimum length for L 2may be reduced by up to 50 % of the values given in BS EN
49、 1401-1:1998, Table 8. d) Where a spigot is chamfered, the external chamfer angle shall be not less than 10 . 6.3.3 Rodding eyes If rodding eyes are supplied with a spigot or socket for connection to pipework, the internal opening shall have a minimum dimension of not less than 100 mm and shall be sealed so that it shall not leak when tested in accordance with BS 2782-11:Method 1112B. 6.3.4 Cleaning eyes Where
