1、BRITISH STANDARD BS416-1:1990 Discharge and ventilating pipes and fittings, sand-cast or spun in cast iron Part 1: Specification for spigot and socket systemsBS416-1:1990 This British Standard, having been prepared under the directionof the Building ServicesStandards Policy Committee, was published
2、underthe authority of the BoardofBSI and comes intoeffecton 31 October1990 BSI 09-1999 First published, July 1931 Second edition, April 1935 Third edition, December 1944 Fourth edition, May 1957 Fifth edition, March 1967 Sixth edition, in metric units, October1973 Seventh edition, in Parts, October1
3、990 The following BSI references relate to the work on this standard: Committee reference SEB/39 Draft for comment 88/11961 DC ISBN 0 580 18763 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Building Services Standards Policy Committe
4、e (SEB/-) to Technical Committee SEB/39, upon which the following bodies were represented: Aluminium Federation BCIRA British Foundry Association Builders Merchants Federation Copper Development Association Department of the Environment (Property Services Agency) Ductile Iron Producers Association I
5、nstitute of British Foundrymen Institute of Plumbing Light Metal Founders Association National Association of Plumbing, Heating and Mechanical Services Contractors National Metal Trades Federation Amendments issued since publication Amd. No. Date of issue CommentsBS416-1:1990 BSI 09-1999 i Contents
6、Page Committees responsible Inside front cover Foreword iii 1 Scope 1 2 Definitions 1 3 Materials 2 4 Dimensions and tolerances 2 5 Leakage test 3 6 Coatings 3 7 Marking 3 Appendix A Information to be exchanged at the time of enquiry and/or order 4 Appendix B Typical designs for pipes and fittings 4
7、 Figure 1 Right hand fitting 1 Figure 2 Left hand fitting 2 Figure 3 Effective length 2 Figure 4 Ears 3 Figure 5 Straight pipe, sockets (Types A and B) and spigots 4 Figure 6 Short radius bends with or without access door 5 Figure 7 Long radius bends 5 Figure 8 Offsets 6 Figure 9 Equal branches with
8、 or without access door 6 Figure 10 Unequal branches with or without access door 7 Figure 11 Long bends and long branches 8 Figure 12 Double equal branches with or without oval access door 8 Figure 13 Double unequal branches with or without access door 9 Figure 14 Parallel branches, single, equal an
9、d unequal 9 Figure 15 Inverted branches (spigot type) 10 Figure 16 Inverted branches (socket type) 10 Figure 17 Traps with or without access door 11 Figure 18 Tapers 11 Figure 19 Roof outlet (square grating) 12 Figure 20 Roof outlet (circular grating) 12 Figure 21 87 bent roof outlet 13 Figure 22 Ro
10、of outlet (balcony grating) 13 Figure 23 Straight inspection pieces with access door 14 Figure 24 Union sockets 14 Figure 25 Shoes 14 Figure 26 Cast iron holderbats 15 Figure 27 Short connecting pipe: sanitary connection DN90 and DN100 15 Figure 28 Sanitary bends: sanitary connection DN90 and DN100
11、15 Figure 29 DN90 and DN100 w.c. connectors with anti-syphon socket (DN50 branch) 16 Figure 30 Roof vent connector for asphalt 16 Figure 31 Bossed pipes 17BS416-1:1990 ii BSI 09-1999 Page Table 1 Straight pipe, sockets (Types A and B) and spigots 4 Table 2 Short radius bends with or without access d
12、oors 5 Table 3 Minimum access door dimensions 5 Table 4 Large radius bends 5 Table 5 Range of nominal bore size for offsets 6 Table 6 Range of nominal projection for offsets 6 Table 7 Equal branches with or without access door 7 Table 8 Range of nominal bore size combinations for unequal branches wi
13、th or without access door 7 Table 9 Long branches 8 Table 10 Range of nominal bore size combinations for double equal branches with or without oval access door 8 Table 11 Range of nominal angle for double equal branches with or without oval access door 8 Table 12 Double unequal branches with or with
14、out access door 9 Table 13 Range of nominal bore size for parallel branches, single, equal and unequal 9 Table 14 Range of nominal bore size for inverted branches (spigot type) 10 Table 15 Range of nominal angle for inverted branches (spigot type) 10 Table 16 Range of nominal bore size for inverted
15、branches (socket type) 10 Table 17 Range of nominal angle for inverted branches (socket type) 10 Table 18 Range of nominal bore size for traps with or without access door 11 Table 19 Range of nominal bore size for tapers 11 Table 20 Range of nominal bore size for square grating roof outlets 12 Table
16、 21 Range of nominal bore size for circular grating roof outlets 12 Table 22 Range of nominal bore size for87 bent roof outlets 13 Table 23 Range of nominal bore size for balcony grating roof outlets 13 Table 24 Range of nominal bore size for straight inspection pieces with access door 14 Table 25 R
17、ange of nominal bore size suitable for union sockets, shoes and cast iron holderbats 15 Table 26 Range of nominal bore size for vent pipe roof connectors 16 Table 27 Range of nominal bore size for bossed pipes 17 Publications referred to Inside back coverBS416-1:1990 BSI 09-1999 iii Foreword This Pa
18、rt of BS416 has been prepared under the direction of the Building Services Standards Policy Committee. It is the first Part of a two-part revision of BS416:1973, which is withdrawn. Part2 specifies socketless systems. The main changes incorporated in the revision are as follows. a) The products are
19、specified as being of either grey or ductile cast-iron. b) The range of pipe and fitting diameters has been rationalized to correspond to those commonly used, the DN125 range of pipes and fittings having been deleted. c) The dimensions given in the tables are such that the pipes covered by this Part
20、 of BS416, manufactured by either process, are interchangeable and can be used with the fittings specified. Double socket lengths have been included and these comply with the requirements for corresponding spigot/socket pipes. d) It has been made clear that the systems are for use above ground (see2
21、.1), and internal diameters have been modified to obtain unobstructed flow when such systems are connected to below-ground systems complying with BS437. e) The significance of the Type A and Type B sockets has been clarified by early reference to the figure in Table 1. f) Leak testing by both hydrau
22、lic and pneumatic methods is included. g) In accordance with the convention of defining bend angles by the angle through which the direction of flow is thereby changed, these are now described as acute angles, supplementary to the obtuse angles used in BS416:1973. Bends in stock which were made to c
23、omply with BS416:1973 will be marked with obtuse angles; those made to comply with BS416:1990 will be marked with their acute angles. h) Some dimensional requirements have been added for access doors, ears, roof outlets, union sockets, holderbats, and bosses. i) As regards coating materials, in orde
24、r not to prohibit materials which are suitable, but which are not yet covered by a British Standard, a reference to such materials, certified by their manufacturer as suitable, has been added in item d) of clause3. j) This revision deletes reference to laying lengths of fittings. A British Standard
25、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 i
26、nside front cover, pagesi toiv, pages1to18, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBS416-1:1990 BSI 09-1999 1 1 Scope This Par
27、t of BS416 specifies cast grey or ductile iron spigot and socket pipes manufactured by either the sand-cast or the spun process, with either Type A or Type B sockets (see Table 1). This Part ofBS416 also specifies sand-cast fittings. These pipes and fittings are for use above ground (see2.1) in disc
28、harge or ventilating pipe systems in buildings. This Part of BS416 specifies quality of material, critical dimensions and tolerances, coating and marking. A leakage test is included. For the convenience of specifiers and purchasers, a list of options available to them within the standard is given in
29、 Appendix A. NOTE 1Plan views of pipes and fittings are given in Figure 1 to Figure 4. Typical designs for pipes and fittings are illustrated in Figure 5 to Figure 31 in Appendix B. Dimensions are illustrated on the figures (where appropriate) and are given in the tables accompanying those figures (
30、see Table 1 to Table 27). Specifications for coatings are included by reference (in item d) of clause3) to existing British Standards and, for materials not covered by those standards, by a requirement for a manufacturers certificate of suitability. NOTE 2The pipes specified may be used as rain-wate
31、r pipes when a heavier grade of pipe than that specified in BS460 is required. NOTE 3The titles of the publications referred to in this standard are listed on the inside back cover. 2 Definitions For the purposes of this British Standard the definitions given in BS4118 apply, together with the follo
32、wing. 2.1 above ground pipework within or external to a building, including any basements, but excluding any pipework which has entered the ground 2.2 right hand fitting a bend or branch so constructed that when viewed with the spigot downwards and with the boss or access door facing the observer, t
33、he socket of the bend or the arm of the branch projects to the right NOTEA right hand fitting is illustrated in Figure 1. 2.3 left hand fitting a bend or branch so constructed that when viewed with the spigot downwards and with the boss or access door facing the observer, the socket of the bend or t
34、he arm of the branch projects to the left NOTEA left hand fitting is illustrated in Figure 2. 2.4 type A socket a socket with two beads NOTEAn example of a Type A socket is illustrated in Figure 5. 2.5 type B socket a socket of any type other than Type A NOTEAn example of a Type B socket is illustra
35、ted in Figure 5. 2.6 DN (nominal size) a numerical designation of the size of a unit which is a convenient round number approximately equal to a manufacturing dimension 2.7 manufacturers declared length/angle the length/angle which a manufacturer aims to produce 2.8 effective length the length of a
36、pipe or fitting less the depth of any socket NOTEThe effective length of a pipe is illustrated in Figure 3. Figure 1 Right hand fittingBS416-1:1990 2 BSI 09-1999 3 Materials The materials used for the manufacture of products complying with this British Standard shall be as follows. a) For pipes and
37、fittings: 1) grey iron of tensile strength not less than grade150 of BS1452; or 2) ductile iron of tensile strength not less than that specified in BS4772. b) For screws, bolts and washers for access fittings: hot pressed brass, cadmium plated steel, stainless steel or sherardized steel. c) For acce
38、ss door gaskets: a material not less than3mm thick complying with BS2494, TypeD, e.g.rubber IRHD46 to55. d) For coatings: material complying with BS3416, BS4147, or BS4164, or other material certified by the manufacturer as suitable for the purpose. 4 Dimensions and tolerances 4.1 Pipes 4.1.1 Nomina
39、l bore size. Ranges of nominal bores are quoted in the tables in Appendix B and shall be subject to the following minimum values: a) for DN50 pipe:48mm; b) for DN65 pipe:63mm; c) for DN75 pipe:74mm; d) for DN90 pipe:88mm; e) for DN100 pipe:99mm; f) for DN150 pipe:150mm. 4.1.2 Pipe lengths. Lengths a
40、re not specified in this British Standard, but the manufacturer shall provide information on available lengths, and the lengths supplied shall be within 20mm of the measurement quoted. 4.1.3 Pipe walls. Pipe walls shall comply with the dimensions given in Table 1, subject to a tolerance ofmm. 4.2 Fi
41、ttings 4.2.1 Nominal bore size. Ranges of nominal bores are quoted in the tables in Appendix B and shall be subject to the minimum values given in4.1.1. 4.2.2 Fitting lengths. Lengths are not specified in this British Standard, but the manufacturer shall provide information on available lengths and
42、the lengths supplied shall be within 5mm of the measurement quoted. Figure 2 Left hand fitting Figure 3 Effective length +0 1.5BS416-1:1990 BSI 09-1999 3 4.2.3 Fitting walls. Thickness of walls of fittings shall be no less than that of pipes with which they are used, subject to a tolerance of min. 4
43、.2.4 Angles of fittings. Angles of fittings shall be as indicated in the tables in Appendix B, subject to a tolerance of 1.5 . 4.3 Ears Where ears are supplied, they shall be a) with sand-cast pipes: cast during the pipe manufacture; b) with spun pipes, either: 1) as loose bands; 2) rigidly attached
44、 to the socket of the pipe; 3) cast integrally with the pipe during spinning. Where ears are supplied, they shall comply with the dimensions given in Table 1. For pipes up to and including75mm nominal bore, the distance p from the back of the ear to the back of the pipe (see Figure 4) shall be322mm.
45、 For pipes greater than75mm nominal bore, the distance p from the back of the ear to the back of the pipe (see Figure 4) shall be382mm. 4.4 Access doors The minimum values of the shortest and longest dimensions of the access door shall be as indicated in the tables in Appendix B. NOTEIt is permissib
46、le for fittings to be provided with circular, oval or rectangular access doors. These may be of various designs and sizes (subject to the minimum values specified). 4.5 Depth of trap seal The minimum depth of seal in all fittings incorporating a water seal shall be50mm unless otherwise shown in the
47、relevant figure. 5 Leakage test When tested by the method described in Appendix B of BS4772:1988, pipes and fittings shall be capable of withstanding for at least15s an internal hydrostatic pressure of at least0.5bar 1)without leakage. NOTEPressure testing may also be carried out pneumatically. In a
48、ir testing, safety valves should be fitted to prevent any pressure developing in excess of0.6 bar and the test should be carried out under water. 6 Coatings Pipes and fittings shall be coated with materials complying with item d) of clause3. 7 Marking Every pipe or fitting shall be legibly and indel
49、ibly marked with the following: a) the number of this British Standard 2) , i.e.either BS416-1, BS416-1 or BS416/1; b) the nominal bore, e.g.100; c) a mark identifying the manufacturer and the factory if there is more than one; d) “DUCTILE” or “SG” for products made from ductile cast iron. NOTEProducts made from grey cast iron would not be so marked. e) in the cast of fittings, with the angle (acute) where appropriate. (See item g) of the for
