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1、BRITISH STANDARD BS 5911-110: 1992 Incorporating Amendment No. 1 Precast concrete pipes and ancillary concrete products Part 110: Specification for ogee pipes and fittings (including perforated) Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00:00 2006, Uncontrolled Copy, (c) BS
2、I BS 5911-110:1992 This British Standard, having been prepared under the direction of the Cement, Gypsum, Aggregates and Quarry Products Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 November 1992 BSI 02-1999 The following BSI refere
3、nces relate to the work on this standard: Committee reference CAB/12 Draft for comment 90/11575 DC ISBN 0 580 19992 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Cement, Gypsum, Aggregates and Quarry Products Standards Policy Committ
4、ee (CAB/-) to Technical Committee CAB/12, upon which the following bodies were represented: Association of Consulting Engineers Association of Metropolitan Authorities British Cement Association British Precast Concrete Federation Ltd. Concrete Pipe Association Concrete Society County Surveyors Soci
5、ety Department of Transport Federation of Civil Engineering Contractors Institution of Civil Engineers Institution of Highways and Transportation Institution of Water and Environmental Management Ministry of Agriculture, Fisheries and Food Pipe Jacking Association Sand and Gravel Association Limited
6、 Water Services Association of England and Wales The following body was also represented in the drafting of the standard, through subcommittees and panels: Department of Transport Amendments issued since publication Amd. No.DateComments 8155March 1994Indicated by a sideline in the margin Licensed Co
7、py: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5911-110:1992 BSI 02-1999i Contents Page Committees responsibleInside front cover Forewordiii Section 1. General 1Scope1 2Definitions1 Section 2. Materials 3Cement3 4Aggregates3 5Other concrete materia
8、ls3 6Concrete mix, casting and finish4 7Reinforcement5 Section 3. Dimensions and tolerances 8Nominal size and effective length6 9Diameters6 10Variation in the thickness of wall6 11Squareness of ends6 12Deviation from straightness7 13Surface cracking7 14Perforations in pipes7 15Joints7 16Bends7 17Jun
9、ctions7 Section 4. Tests 18General11 19Test requirements11 Section 5. Inspection procedures and marking 20Type of inspection and batch size13 21Inspection procedures for pipes15 22Inspection procedures for bends and junctions16 23Marking17 Appendix A Information to be supplied in an enquiry and orde
10、r18 Appendix B Method of assessing surface finish18 Appendix C Method of assessing the deviation from straightness19 Appendix D Method of test for water absorption19 Appendix E Hydrostatic test method20 Appendix F Crushing strength tests for pipes20 Appendix G Bending moment resistance (BMR) test me
11、thods23 Appendix H Methods of measuring depth of cover to reinforcement25 Appendix J Facilities for purchasers25 Figure 1 Typical rebated joints1 Figure 2 Effective length of pipes2 Figure 3 Effective lengths of typical bends8 Figure 4 Typical junctions9 Figure 5 Gauge for assessing surface evenness
12、18 Figure 6 Gauge for assessing surface voids19 Figure 7 Gauge for assessing deviation from straightness20 Figure 8 Testing arrangement for the crushing test22 Figure 9 Dimensions of feeler gauge for measuring crack widths23 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00:00 2
13、006, Uncontrolled Copy, (c) BSI BS 5911-110:1992 ii BSI 02-1999 Page Figure 10 Testing arrangement for BMR test (four point loading)24 Figure 11 Wooden bearing block for the three point loading test method24 Figure 12 Testing arrangement for BMR test (three point loading)25 Table 1 Limits of chlorid
14、e content of concrete4 Table 2 Nominal sizes and tolerances6 Table 3 Minimum effective lengths and typical nominal angles of bends7 Table 4 Right-angled junctions7 Table 5 Oblique-angled junctions7 Table 6 Summary of test requirements and inspection procedures10 Table 7 Crushing test loads for pipes
15、12 Table 8 Bending moment resistance (BMR)12 Table 9 Maximum number of individual defectives in last 10 batches permitted for switching reduced inspection (hydrostatic, works proof load (reinforced) and maximum load (unreinforced) crushing test)13 Table 10 Inspection plans for hydrostatic and works
16、proof load crushing tests (reinforced pipes only)14 Table 11 Inspection plans for maximum load crushing tests (unreinforced only)14 Publication(s) referred to26 Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5911-110:1992 BSI 02-1999iii
17、Foreword This Part of BS 5911 has been prepared under the direction of the Cement, Gypsum, Aggregates and Quarry Products Standards Policy Committee. It supersedes BS 5911-3:1982 which is withdrawn. Following the revision of the Part numbering system for BS 5911, led by the revision of Part 1 under
18、the number BS 5911-100, this Part becomes BS 5911-110. This revision follows the relevant changes to Part 1 incorporated in Part 100. The principal changes, as compared with BS 5911-3:1982 are as follows. a) The previous standard referred to the use of products for “land drainage and sewerage”. Usag
19、e now relates to ground water and surface water only, “sewerage” category pipes having been omitted because of lack of use. Similarly, sizes above DN 1 200 have been omitted. b) The types of joint dealt with are now described as rebated, ogee joints being regarded as a special example of rebate (see
20、 Figure 1). c) The specifications for cement and concrete have taken note of the use of pulverized-fuel ash (p.f.a.) or ground granulated blastfurnace slag (g.g.b.s.) in combination with Portland cement. The limits of chloride content of the concrete have been included. d) Perforated pipes have been
21、 included and the dimensions and frequency of perforations have been specified. e) Requirements relating to finish and dealing with the use of additives have been expanded. f) Cube crushing tests have been introduced for the concrete used in monolithic bends and junctions. g) A bending moment resist
22、ance test has been introduced for certain pipes up to and including DN 300. This Part of BS 5911 is a specification incorporating tests, on pipes in manufacturers works or in testing stations, that relate to performance of buried pipelines. The criteria are intended to ensure that the pipeline will
23、carry ground or surface water at atmospheric pressure without suffering structural damage. Pipes to be installed in an environment aggressive to concrete should be the subject of special consideration, for example as regards depth of concrete cover to reinforcement. For an enquiry or order to be ful
24、ly understood it is essential that the supplier be given the information set out in Appendix A. Product certification. Users of this British Standard are advised to consider the desirability of third party certification of product conformity with this British Standard based on testing and continuing
25、 surveillance, which may be coupled with assessment of a suppliers quality systems against the appropriate Part of BS 5750. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5911-110:1992 iv BSI 02-1999 Enquiries as to the availability of t
26、hird party certification schemes will be forwarded by BSI to the Association of Certification Bodies. If a third party certification scheme does not already exist, users should consider approaching an appropriate body from the list of Association members. A British Standard does not purport to inclu
27、de 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, pages
28、i to iv, pages 1 to 26, 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. Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00
29、:00 2006, Uncontrolled Copy, (c) BSI BS 5911-110:1992 BSI 02-19991 Section 1. General 1 Scope This Part of BS 5911 specifies requirements for precast concrete cylindrical units, perforated or unperforated, each with ogee or other rebated joints, either unreinforced or reinforced with steel cages or
30、hoops. Perforated unreinforced pipes are also included. The units specified are intended for drainage and for the construction of culverts, other than systems carrying foul water. The specification covers constituent materials, dimensional requirements, performance requirements, appropriate test met
31、hods and inspection procedures. This standard does not include the structural or hydraulic design of the pipeline, its durability under unusual environmental conditions or standards of workmanship and supervision during construction and operation. For guidance on these topics, work on further Britis
32、h Standards is in hand. NOTEThe titles of the publications referred to in this Part of BS 5911 are listed on page 26. 2 Definitions For the purposes of this Part of BS 5911 the following definitions apply. 2.1 unit a pipe, bend or junction 2.2 unreinforced concrete pipe a hollow cylinder manufacture
33、d from concrete, cast as one piece and of uniform cross section throughout its length, except at the joint profile NOTEThe inclusion of reinforcement solely for handling purposes does not exclude a pipe from this definition. 2.3 reinforced concrete pipe a pipe, as defined in 2.2, but reinforced with
34、 one or more prefabricated steel cages or hoops suitably positioned to resist tensile stresses imposed by the specified test loads 2.4 perforated pipe an unreinforced concrete pipe with circular perforations 2.5 splayed end pipe a pipe having one or both of its ends designed to be in a plane not at
35、right angles to its longitudinal axis 2.6 rebated joint a joint made within the wall thickness of a unit, including ogee joints NOTESee Figure 1. 2.7 nominal size (DN) a numerical designation of the bore of a unit, which is a convenient round number approximately equal to the internal diameter in mi
36、llimetres 2.8 manufacturing diameter a diameter of a unit that a manufacturer seeks to achieve 2.9 actual diameter a diameter found by measurement Figure 1 Typical rebated joints Licensed Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5911-110:19
37、92 2 BSI 02-1999 2.10 effective length the length of a pipe measured as shown in Figure 2 2.11 characteristic strength of concrete that value of cube strength below which 5 % of all possible strength measurements of the specified concrete are expected to fall 2.12 batch the number of units of a part
38、icular specification produced under uniform conditions during a given production period by one particular process 2.13 reinforcement steel, other than stainless steel, cast within a unit so as to reinforce the concrete, or to locate steel for that purpose Figure 2 Effective length of pipes Licensed
39、Copy: sheffieldun sheffieldun, na, Fri Dec 01 14:36:58 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5911-110:1992 BSI 02-19993 Section 2. Materials 3 Cement The cement shall: a) be factory-produced by the cement manufacturer and comply with one of the following standards as appropriate: or b) consi
40、st of a normal or special combination of cement complying with BS 12 and g.g.b.s. or p.f.a. in accordance with the following, to be included as part of the concrete mix by simultaneously combining them with the other concrete materials at the concrete mixer: NOTEThe minimum cement content and maximu
41、m water/cement ratio specified in 6.1 will ensure that any of the cements listed in item a) or normal combinations of cement complying with BS 12 and g.g.b.s. or p.f.a. as specified in item b) will facilitate resistance to sulfate attack equivalent to classes 1 and 2 in Table 6.1 of BS 8110-1:1985.
42、Class 3 resistance will be provided by the use of special combinations of cement complying with BS 12 and g.g.b.s. or p.f.a. as specified in item b) or by cement complying with BS 4027; the latter will also facilitate class 4 resistance if the minimum cement content is 370 kg/m3. The advice of the p
43、ipe manufacturer should be sought where class 5 conditions exist. 4 Aggregates 4.1 General Aggregates shall consist of materials complying with BS 882:1983 except that the manufacturer may modify the grading requirements of clause 5 of that standard (see clause 0 of BS 882:1983). 4.2 Testing 4.2.1 M
44、echanical properties When tested in accordance with BS 812-111, BS 812-112 and BS 812-105.1 respectively the limiting values on the mechanical properties of coarse aggregates shall be either a minimum of 10 % fines value of 100 kN or a maximum aggregate impact value of 30 %. Flakiness index shall be
45、 not more than 35. 4.2.2 Nominal maximum size The nominal maximum size of aggregate shall not exceed the least of the following: a) 20 mm; b) the depth of concrete cover to reinforcement (see 7.2); c) one-quarter of the minimum thickness of the wall of the unit. 5 Other concrete materials 5.1 Water
46、Water shall be clean and free from harmful matter in such quantities as would affect the properties of the concrete in the plastic or hardened state (see Appendix A of BS 3148:1980). NOTEAs a general rule, potable water, whether treated for distribution through the public supply or untreated, is sui
47、table for making concrete. 5.2 Admixtures Admixtures shall comply with BS 5075. NOTEAdmixtures, when used (see Appendix A), should not impair the durability of the concrete, nor combine with the ingredients to form harmful compounds nor increase the risk of corrosion of reinforcement. The chloride i
48、on content of admixtures shall not exceed 2 % by mass of the admixture or 0.03 % by mass of the cement, when used in: a) any concrete containing reinforcement or other embedded metal; and b) any concrete made with cement complying with BS 4027. The manufacturer shall make available details of: 1) th
49、e relevant production records; 2) the admixture(s) used; 3) the dosage rate of each admixture; 4) the effect of under-dosing and over-dosing. Type of cementStandard to be complied with ordinary and rapid-hardening Portland BS 12 Portland-blastfurnaceBS 146 sulfate-resisting PortlandBS 4027 Portland p.f.a.BS 6588 Cementitious component other than cement Standard to be complied with % by mass of total cementitious content normalspecial (additional resistance to sulfate, see note) g.g.b.s.BS 66990 % to 65 % 70 % to 90 % p.f.a.
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