1、PRODUCT ASSESSMENT SPECIFICATION PAS 26:1998 Manhole tops intended for use on service station forecourts and pavement areas Requirements, performance and marking ICS 93.080.30PAS26:1998 This Product Assessment Specification, having been prepared under the direction oftheSector Committee for Building
2、and Civil Engineering, was published under the authorityof the Standards Committee and comes into effecton 15 October 1998 BSI 05-1999 The following BSI references relate to the work on this standard: Committee reference B/505/4 ISBN 0 580 28231 7 Amendments issued since publication Amd. No. Date Co
3、mmentsPAS26:1998 BSI 05-1999 i Contents Page Foreword ii 1 Scope 1 2 Normative references 1 3 Materials 1 4 Performance 2 5 Marking 3PAS26:1998 ii BSI 05-1999 Foreword In preparing EN124the Technical Committee CEN/TC165, Wastewater engineering, made provision for manhole tops and gully tops to be ma
4、de of materials other than those specified in BSEN124:1994. BS EN124:1994, 6.1.3 requires that “For any other materials used in the field of application of this standard, all requirements of this specification shall be met and an approved independent body shall establish any other relevant requireme
5、nts and testing methods.” Accordingly, a working group was established to prepare a supplementary specification to BS EN124to cover composite and plastics materials used in the construction of manhole tops conforming to BS EN124, which are not for use in the highway. This Product Assessment Specific
6、ation has been prepared to cover composite and plastics material used in manhole tops intended for installation in service station forecourts and pavement areas and should be read in conjunction with BSEN124:1994. Where thermoplastics materials are used in the construction of a manhole top frame int
7、ended for installation in service station forecourts and pavement areas, this Product Assessment Specification should also be read in conjunction with PAS25:1998, Plastics frames for use in gully tops and manhole tops for vehicular and pedestrian areas Materials, performance requirements, test metho
8、ds and marking. This Product Assessment Specification has been published to provide an interim specification in the absence of defined performance criteria for other materials within BSEN124. It is not to be regarded as a British Standard. It will be withdrawn upon publication of its content in, or
9、as, a British Standard. Acknowledgement is made to the following organizations which where consulted in the development of this specification: British Plastics Federation; BSI Product Testing and Standards Development. This Product Assessment Specification has been prepared and published by BSI whic
10、h retains its ownership and copyright. BSI reserves the right to withdraw or amend this Product Assessment Specification on receipt of authoritative advice that it is appropriate to do so. This Product Assessment Specification will be reviewed at intervals not exceeding two years and any amendments
11、arising from the review will be published in an amended Product Assessment Specification and publicized in Update Standards. 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
12、 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 i and ii, pages1 to3 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated
13、. This will be indicated in the amendment table on the inside front cover.PAS26:1998 BSI 05-1999 1 1 ScopeThis Product Assessment Specification is applicable to manhole tops which conform to BS EN124and are intended for installation in service station forecourts and pavement areas. It specifies mate
14、rial, performance and marking requirements for composite and plastics materials used in the manufacture of manhole tops in accordance with BSEN124, 6.1.3, together with the appropriate test methods. 2 Normative references The following normative documents contain provisions which, through reference
15、in this text, constitute provisions of this Product Assessment Specification. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. For undated references, the latest edition of the publication referred to applies. BS 476-7:1997, Fire tests on build
16、ing materials and structures Part7:Method of test to determine the classification of the surface spread of flame of products. BS 812-114:1989, Testing aggregates Part114:Method for determination of the polished-stone value. BS 903-A18:1973 (1992), Physical testing of rubber Part A18: Determination o
17、f equilibrium water vapour absorption. BS 1006-A02:1990, Methods of test for colour fastness of textiles and leather Part A02: Grey scale for assessing change in colour (including half-steps). BS 1006-A03:1978, Methods of test for colour fastness of textiles and leather Part A03: Grey scale for asse
18、ssing staining (including half-steps). BS 2050:1978 (1996), Specification for electrical resistance of conducting and antistatic products made from flexible polymeric material. BS 2782-5:Method 540E:1995, Methods of testing plastics Part5:Optical and colour properties, weathering Method540E:Methods
19、of exposure to laboratory light sources. Xenon-arc sources. BS 2782-10:Method 1001:1977 (1994), Methods of testing plastics Part10:Glass reinforced plastics Method1001:Measurement of hardness by means of a Barcol impressor. BS 2782-10:Method 1003:1977(1996), Methods of testing plastics Part 10: Glas
20、s reinforced plastics Method1003:Determination of tensile properties. BS 2782-10:Method 1005:1977(1996), Methods of testing plastics Part 10: Glass reinforced plastics Method1005:Determination of flexural properties. Three point method. BS 7413:1991, Specification for white PVC-U extruded hollow pro
21、files with heat welded corner joints for plastics windows: materials type A. BS EN 124:1994, Gully tops and manhole tops for vehicular and pedestrian areas. Design requirements, type testing, marking, quality control. BS EN 295-3:1991, Vitrified clay pipes and fittings and pipe joints for drains and
22、 sewers Part3:Test methods. BS EN 590:1997, Specification for automotive diesel fuel. PAS 25:1998, Plastics frames for use in gully tops and manhole tops for vehicular and pedestrian areas Materials, performance requirements, test methods and marking. 3 Materials 3.1 Composite and plastics material
23、The material from which the manhole top is produced shall comprise either composite or plastics material, incorporating or blended with other ingredients or materials as necessary to enable manufacture of a manhole top conforming to BSEN124and the other requirements of this PAS as applicable. 3.1.1
24、Hardness Cut samples from a manhole top and test in accordance with BS2782-10:Method1001. The mean Barcol Hardness shall be equal to or greater than35. 3.1.1 Tensile properties Cut samples from a manhole top and test in accordance with BS2782-10:Method1003. For each test cut two samples at90 to each
25、 other. The value of B fshall be equal to or greater than222MPa and the value of E fshall be equal to or greater than15GPa. 3.1.2 Flame resistance The following test method may be dangerous to health unless precautions are taken to control fire and fume. Testing shall be undertaken by a suitably com
26、petent person. Cut samples from a manhole top and test in accordance with BS476-7. If the size of specimen as cut from the manhole top can not be achieved in accordance with BS476-7:1997, 4.3 it is permissible to manufacture a test specimen in accordance with BS476-7:1997, 4.3.1.PAS26:1998 2 BSI 05-
27、1999 The samples shall achieve a flame resistance rating of Class2or better. 3.1.3 Chemical resistance Cut samples from a manhole top and test in accordance with BS903-A18. Weigh the samples before commencing the conditioning. Condition one set of samples for sevendays at (23 2) C in reference solut
28、ion (60% volume toluene,40% volume enheptane) and subsequently test the samples in accordance with BS903-A18, 4.1.2. Condition another set of samples for seven days at (23 2) C in diesel and subsequently test the samples in accordance with BS903-A18, 4.1.2. For both sets of samples: the change in ma
29、ss shall be not more than0.5%; the change in flexural strength shall be not more than 20%; the change in flexural modulus shall be not more than 30%. 3.1.4 Surface resistivity Cut samples from a manhole top and test in accordance with BS2050: AppendixA4.1. The surface resistivity shall be less than1
30、k7/cm 2 . 3.2 Composite material 3.2.1 Weathering resistance Cut samples from the bottom surface of a manhole top, and cycle in accordance with BS7413, AppendixH. Test in accordance with BS2782-5:Method540E. The samples shall meet the requirements of 3.2.2 and 3.2.3. 3.2.2 Aged flexure Cut samples f
31、rom a manhole top and test in accordance with BS2782-10:Method1005. The change of (flexural) strength and (flexural) modulus shall be not more than 30% and 40% respectively. 3.2.3 Colour fastness Cut samples from a manhole top and test in accordance with BS1006:A02 or BS1006:A03. Retain five represe
32、ntative test pieces and store in a dark, dry place at (20 5) C for later comparison with the exposed test pieces. The colour change shall be equal to or not less than3 to4 on the grey scale. 4 Performance 4.1 Stress relief Test a manhole top in accordance with BS EN295-3:1991, 16.3 at a temperature
33、of(150 5) C for1h. There shall be no visible defects, blistering, cracks or delaminations. 4.2 Impact resistance Condition a manhole top at a temperature of (20 2) C for1h. Drop a(4.5 0.1)kg indenture with a(50 1)mm diameter hemispherical end from a height of1m 10mm onto the manhole top. There shall
34、 be no visible cracking. 4.3 Skid resistance Test a manhole top in accordance with BS812-114. The skid resistance (dry condition) shall be not less than55. 4.4 Fuel exposure resistance Testing shall be undertaken by a suitably competent person. WARNING. The following test method may be dangerous to
35、health unless precautions are taken to control fire and fume. 4.4.1 Petrol exposure Pour (500 10) ml of reference solution(60% volume toluene,40% volume enheptane) over a manhole top. Repeat at24hourly intervals for30days. After the30day period, test the manhole top in accordance with BSEN124:1994,
36、8.3.1. The manhole top shall meet the requirements for permanent set specified in BSEN124:1994, 8.3.1. 4.4.2 Diesel exposure Pour (500 10) ml of grade50-53CN diesel fuel (commercial grade, as specified in EN590) over a manhole top. Repeat at24hourly intervals for30days. After the30day period, test t
37、he manhole top in accordance with BSEN124:1994, 8.3.1. The manhole top shall meet the requirements for permanent set specified in BSEN124:1994, 8.3.1. 4.5 Thermal stability 4.5.1 Condition a manhole top at(60 2) C for30days. After the30day period cool to ambient conditions and test the manhole top i
38、n accordance with4.2. The manhole top shall show no visible cracking.PAS26:1998 BSI 05-1999 3 4.5.2 Condition a manhole top at(60 2)C for30days. After the30day period cool to ambient conditions and test the manhole top in accordance with BSEN124:1994, 8.3.1. The manhole top shall meet the requiremen
39、ts for permanent set specified in BSEN124:1994, 8.3.1. 4.6 Water ingress resistance When the manhole top is described by the manufacturer as having a watertight sealing arrangement, the manhole top shall be tested as follows: Create a water reservoir over the sealing arrangement of the manhole top t
40、o a depth of(50 5)mm for7h. The sealing arrangement shall show no visible sign of leakage through the seal. With the reservoir remaining above the sealing arrangement, apply a load of(5 0.2)tonnes at a rate of between1kN/s and5kN/s through a test block as specified in BSEN124:1994,8.2.2. Once the lo
41、ad is achieved, it shall be released immediately. The sealing arrangement shall show no visible sign of leakage through the seal. 4.7 Creep resistance Load a manhole top to the permanent set load specified in BSEN124:1994,8.3.1 for60 min. Allow to recover for 5 min after complete removal of the load
42、. Test the manhole top in accordance with BSEN124:1994,8.3.1. The manhole top shall meet the requirements for permanent set specified in BSEN124:1994,8.3.1. 4.8 Dynamic load Load a manhole top at a rate of between1kN/s and5kN/s to achieve a load of(10 0.2)tonnes. Release the load and repeat for10,00
43、0cycles. Upon completion of the10,000cycles the manhole top shall meet the requirements of permanent set specified in BS EN124:1994, 8.3.1. 5 Marking Manhole tops shall, in addition to markings in accordance with BSEN124:1994, clause9, also bear the following marking: PAS 26:1998 (as the marking of
44、this Product Assessment Specification); The “PAS 26:1998” marking shall be clear and durable and appear adjacent to the “BSEN124:1994” marking. 0 + 1 0.5 0PAS 26:1998 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparin
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