1、BRITISH STANDARD Steel strip sheaths for prestressing tendons - Test methods Part 1. Determination of shape and dimensions The European Standard EN 524-1 : 1997 has the status of a British Standard ICs 77.140.75; 91.080.40 1s EN i24-1: 1997 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY CO
2、PYRIGHT LAW - STD-BSI BS Amd. No. BS EN 524-1 : 1997 Date Text affected This British Standard, having been prepared under the direction of the Sector Board for Building and Civil Engineering, was published under the authority of the Standards Board and comes into effect on 16 November 1997 O BSI 199
3、7 ISBN O 580 28666 6 National foreword This Britjsh Standard is the English language version of EN 5241 : 1997. The UK participation in its preparation was entrusted by Technical Committee B/525, Building and civil engineering stnictures, to Subcommittee B/525/2, Structural use of concrete, which ha
4、s the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - monitor related inteniational and European developments and promulgate them in the UK.
5、A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled nterr 9
6、1.080.40 Descriptors: Prestressed concretes, tubes, sheathing, prestressing steels, classifications, specification, verifications, marking English veision Steel strip sheaths for preskshg tendons - %st methods - Part 1: Determinaton of shape and dimensions Gaina en feuillard dacier pour cbles de Par
7、tie 1: Dterminaton de ia forme et des dimensions Hullrohre aus Bandstahl fr spannglieder - Prfverfahren- ?leil 1: Ermittlung der Formen und MaBe prconhainte - Mthodes dessai - This European Standard was approved by CEN on 199741-27. CEN members are bound to comply with the CENKENELEC Internal Regula
8、tions which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on applicaion to the Centmi Secretariat or to any CEN member. This Europ
9、ean Standard exists in three official versions (English, finch, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the nation
10、al standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fur Nor
11、mung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1997 Copyright reserved to CEN members. Ref. No. EN 5241 : 1997 E STD-BSI BS EN 5ZLi-L-ENGL 1997 = Lb2Ybb7 Ob57931 TY3 W Page 2 EN 524-1 : 1997 Foreword This European Standard has been prepared by “chnicai Committee CEN/TC 104, Concrete
12、 erformance, production, placing and compliance criteria), the Secretariat of which is held by DIN. This standard is a part of the series EN 524 Sheaths for additionally comprises the following Parts preming u- Test methods which - Part 2 Determination of- Vtot is the volume of water in the specimen
13、 (in cm3). reference cylinder (i cm2); 3 Apparatus and accuracy - A possible test device is shown in figure 2 - The procedure to determine the relative volume of profile (Vrel) shall allow for an accuracy of 5 % - Vernier caliiper (accuracy of 0,l mm) - Micrometer gauge (accuracy of 0,Ol mm) 4 Inter
14、nal diameter, height of profile and wall thickness of sheaths The internal diameter, dl, and the heght of profile, h, shall be determined by means of a vernier caliper using the specimen described in clause 6. Measurements shall be taken at both ends of the specimen in two directions at right angles
15、 to one another (see figure 1) before the specimen is sealed The mean values shall be calculated from the values obtained. The wa thickness sha be measured by a micrometer gauge at least at four Merent points. Figure 1. Internal diameter, height of profile and wall thickness of sheaths It is recomme
16、nded that the specimen length chosen is such that the specimen can be used for the other test. O BSI 1997 Page 4 EN 524-1 : 1997 Figure 2. Test Set-up for determining the total volume O BSI 1997 - STD-BSI BS EN 524-L-ENGL 1997 m 1b24bb Ob5993Y 752 D BS EN 5241 : 1997 BSI 389 Chiswick High Road Londo
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