1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Test methods for buckling resistanceThe European Standard EN 14830:2006 has the status of a British
2、 StandardICS 93.025; 93.030Thermoplastics inspection chamber and manhole bases BRITISH STANDARDBS EN 14830:2006BS EN 14830:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2006 BSI 2006ISBN 0 580 49532 9Amendments issued since
3、publicationAmd. No. Date CommentsThis publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was publ
4、ished by BSI. It is the UK implementation of EN 14830:2006.The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastics piping systems, to Subcommittee PRI/88/1, Plastics piping for non-pressure applications.A list of organizations represented on PRI/88/1 can be obta
5、ined on request to its secretary.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14830October 2006ICS 93.025; 93.030English VersionThermoplastics inspection chamber and manhole bases - Testmethods for buckling resistancelments de fond de botes dinspection et de branchementet de regards en thermopl
6、astique - Mthodes dessai dersistance au flambageBden von Kontroll- und Einsteigschchten austhermoplastischen Kunststoffen - Prfverfahren fr dieWiderstandsfhigkeit gegen EinbeulenThis European Standard was approved by CEN on 28 August 2006.CEN members are bound to comply with the CEN/CENELEC Internal
7、 Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This
8、 European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the na
9、tional standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kin
10、gdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14830:2006: EEN 14830:
11、2006 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references . 4 3 Terms and definitions. 4 4 Principle . 4 5 Apparatus. 5 6 Conditioning 6 7 Test environment 6 8 Procedure. 6 8.1 Internal negative pressure testing using a free standing test assembly 6 8.2 Internal negative pressure testing
12、using a soil box 8 8.3 External pressure testing with the assembly submerged in a water tank 9 8.4 Evaluation 10 9 Test report 11 Bibliography 13 EN 14830:2006 (E) 3 Foreword This European Standard (EN 14830:2006) has been prepared by Technical Committee CEN/TC 155 ”Plastics piping systems and ducti
13、ng systems”, the secretariat of which is held by NEN. 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 April 2007, and conflicting national standards shall be withdrawn at the latest by April 2007.
14、 The relevant performance requirements are contained within the referring standard(s) concerned. This European Standard is one of a series of standards on test methods that support System Standards for plastics piping systems and ducting systems. According to the CEN/CENELEC Internal Regulations, th
15、e national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola
16、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 14830:2006 (E) 4 1 Scope This European Standard specifies methods of test for the resistance of the base of thermoplastics inspection chambers and manholes to external soil and ground-water pressure after in
17、stallation. NOTE This is intended as a test of the durability and structural integrity of manhole and inspection chamber bases supporting product standards prEN 13598-2 1 and prEN 15229 2. 2 Normative references The following referenced documents are indispensable for the application of this documen
18、t. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ENV 1046:2001, Plastics piping and ducting systems Systems outside building structures for the conveyance of water or sewage Practices fo
19、r installation above and below ground EN ISO 9967:1995, Thermoplastics pipes Determination of creep ratio (ISO 9967:1994) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 inspection chamber drainage or sewerage fitting used for the to connecti
20、on of drainage or sewerage installations and/or for changing the direction of drainage or sewerage runs. An inspection chamber terminates at ground level, permitting the introduction of cleaning, inspection and test equipment and the removal of debris but it does not provide access for personnel. Th
21、e riser shaft connected to these fittings has a minimum outer diameter of 200 mm and a maximum inside diameter of less than 800 mm (see also EN 476:1997 3 for non circular chambers) NOTE The termination at ground level permits the introduction of cleaning, inspection and test equipment and the remov
22、al of debris but does not provide access for personnel. 3.2 manhole drainage or sewerage fitting used for the connection of drainage or sewerage installations and/or for changing the direction of drainage or sewerage runs. A manhole terminates at ground level, permitting the introduction of cleaning
23、, inspection and test equipment and the removal of debris and also providing access for personnel. The minimum inside diameter of a manhole riser shaft is 800 mm (see also EN 476:1997 3 for non circular manholes) NOTE The termination at ground level permits the introduction of cleaning, inspection a
24、nd test equipment and the removal of debris and provides access for personnel. 4 Principle A sealed test assembly comprising an inspection chamber or manhole base with a minimum height of 300 mm above the top of the main channel, is placed free standing, or buried in a test box on a 100 mm sand or g
25、ranular bed and covered with granular backfill to a level of minimum 300 mm above the top of the outlets and inlets of the main channel(s). In some cases the first section of the riser may be required in order to achieve the minimum height of 300 mm. EN 14830:2006 (E) 5 The assembly is then subjecte
26、d to a constant internal negative pressure, specified by the product or system standard, for a specified time at a temperature of between 15 C and 25 C or as otherwise specified in the product standard. Alternatively, the pressure difference can be achieved by exposing the test assembly to a constan
27、t positive external hydrostatic pressure of the same numeric value as that specified by the product or system standard. The assembly is submerged under water in a closed tank for a specified time at a temperature of between 15 C and 25 C or as otherwise specified in the product standard. During the
28、test the assembly may be monitored by measuring increasing deflections with time as defined in the product standard. At the end of the test the chamber base/manhole is visually checked for cracking or other defects likely to impair the performance of the inspection chamber or manhole. 5 Apparatus 5.
29、1 Test box, large enough to accommodate the test assembly including the first 300 mm of riser shaft above the top of the outlet and inlets of the main channel, such that at each side there is a free space of 300 mm minimum between the test assembly and the side/top of the test box. 5.2 Backfill mate
30、rial, to cover the test assembly in the box, conforming to Annex A of ENV 1046:2001. Backfill material shall be in accordance with the minimum specification of the manufacturer. 5.3 Sealable water tank or pressure vessel, with internal dimensions capable of accommodating the test assembly to ensure
31、all-round clearance and a lockable lid allowing access to the open top of the inspection chamber or manhole. The water tank or pressure vessel shall be such that the test assembly is not able to gain support from the sides or base of the tank or vessel. It is essential that the removable cover of th
32、e tank is designed in such a way that there is a watertight connection between the cover and the open top of the chamber/manhole shaft or base, and that there is an opening big enough for visual inspection inside the chamber or manhole. The temperature of the water applied shall be (20 2) C or as ot
33、herwise specified in the product standard. 5.4 End closures, to seal any open pipe socket(s), spigot(s) and additionally, the riser shaft. When testing for structural integrity (20C) then the end closures shall be created using standard pipes with end caps. If testing for durability at higher temper
34、atures then plates welded to the end of the sockets or spigots may used to seal the pipe connections. 5.5 Pressure or vacuum source, capable of applying and maintaining the test pressure specified in the product standard specification for the inspection chamber or manhole base as being the maximum p
35、ressure that the inspection chamber or manhole base shall be able to withstand (subject to a minimum of 0,02 MPa). 5.6 Pressure measuring devices, capable of measuring the internal negative or external water test pressure to within an accuracy of 2 %. 5.7 Thermometer, capable of measuring the temper
36、ature of the medium surrounding the test assembly to an accuracy of 0,5 C. 5.8 Deflection measuring equipment (optional), capable of measuring the deflection of the main channel to within an accuracy of 0,1 mm. (If required by the product standard.) 5.9 Test assembly, comprising the base and a porti
37、on of the riser if required to ensure a height of at least 300 mm above the top of the main channel. Unless otherwise specified in the product standard, one test assembly shall be prepared for each test carried out. EN 14830:2006 (E) 6 NOTE The preferred configuration for testing the inspection cham
38、ber/manhole base is the straight through configuration without side entries. 6 Conditioning Unless otherwise specified in the product standard, the test piece shall be tested no less than 21 days after manufacture and after conditioning in air for at least 6 h at a temperature of between 15 C and 25
39、 C. 7 Test environment Unless otherwise specified in the product standard, testing shall be carried out at a temperature of between 15 C and 25 C. 8 Procedure 8.1 Internal negative pressure testing using a free standing test assembly 8.1.1 Seal all inlets and outlets of the test assembly and the top
40、 of the riser shaft using the end closures. NOTE 1 Internal or external tie bars may be used between the inlet and outlet closures to avoid the transmission of external end loading forces to the inspection chamber/manhole base via the end closures. NOTE 2 The test assembly may be turned 180 upside d
41、own to simplify the test. If the base is designed with a double wall, where the outer wall is designed to withstand upthrust, one or more 3 mm to 4 mm diameter holes shall be drilled through the inner wall to ensure that the internal negative pressure is loaded against the outside wall of the base a
42、ssembly. 8.1.2 If the measurement of deflection is required by the product standard install the two devices for measuring deflection at points “W” and “H” as shown in Figures 1 and 2. In the case where bases are non-spherical the relative vertical deformation of the base can be measured directly fro
43、m a datum provided by a stiff beam connected at points HLand HR. If a separate datum is used the points HL, HR and HMshall be measured from that datum during the test and the final deflection expressed as YVwhere YV= (HL+ HR)/2) HM. The change of the width of the main channel shall be expressed as Y
44、Hwhere this is the change to dimension “W”. The sample shall be visibly inspected for evidence of cracks after completion of the test. EN 14830:2006 (E) 7 Key 1 plug-inlet 5 reference 2 plug support device 6 measuring points for dimension H 3 measuring points for dimension W 7 base section 4 plug-ou
45、tlet 8 removable cover Figure 1 Position of measuring devices in the main channel EN 14830:2006 (E) 8 Key D1chamber diameter D2outlet connection diameter C1diameter of connection 1 h1measure height at point 1, which points are located at inlet and outlet h2measure height at point at the middle of th
46、e base Figure 2 Position of measuring devices for spherical bases 8.1.3 Connect the pressure source and pressure-measuring device to the test assembly and apply the internal negative pressure (see 5.5), maintaining it at between 15 C to 25 C or at the temperature specified in the product standard fo
47、r a minimum of 1 000 h or for the time specified in the referring standard for the inspection chamber or manhole base within a tolerance of 2 %. If deflection measurements are required by the product standard these shall be taken at the required defined intervals throughout the test. 8.2 Internal ne
48、gative pressure testing using a test box Prepare the test assembly as described in 8.1.1. Place the test assembly on a (100 10) mm thick granular bed, in the position in which it would be installed, see Figure 3. Apply the backfill and compact to the minimum specified in the manufacturers documentat
49、ion, see 5.2. Connect and apply the test pressure as described in 8.1.3. EN 14830:2006 (E) 9 Dimensions in millimetres Key 1 vacuum source 4 base-component 2 cover 5 tank/test box 3 seal 6 maximum DN Figure 3 Test set up when testing in a test box 8.3 External pressure testing with the assembly submerged in a water tank Prepare the test assembly as described in 8.1.1. It is permitted to cut back the riser shaft to a height of 300 mm above the top of the outlets
