【BS英國標準】BS EN 524-1-1997 Steel strip sheaths for prestressing tendons – Test methods.doc

國內外標準大全豆丁網(wǎng)國內外標準下載地址 /kmust1british standardsteel strip sheaths for prestressing tendons test methodspart 1. determination of shape and dimensionsthe european standard en 524-1 : 1997 has the status of abritish standardics 77.140.75; 91.080.40| bs en524-1 : 1997|no copying without bsi permission except as permitted by copyright lawbs en 524-1 : 1997national forewordthis british standard is the english language version of en 524-1 : 1997. the uk participation in its preparation was entrusted by technical committee b/525, building and civil engineering structures, to subcommittee b/525/2, structural use of concrete, which has 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 international and european developments and promulgate them in the uk.a list of organizations represented on this committee can be obtained on request to its secretary.cross-referencesthe 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 international standards correspondence index, or by using thefind facility of the bsi standards electronic catalogue.compliance with a british standard does not of itself confer immunity from legal obligations.summary of pagesthis document comprises a front cover, an inside front cover, an en title page, pages 2 to 4, an inside back cover and a back cover.amd. no.datetext affectedthis 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 on15 november 1997bsi 1997isbn 0 580 28666 5amendments issued since publicationeuropean standarden 524-1norme europe enneeuropa ische normmarch 1997ics 77.140.75; 91.080.40descriptors: prestressed concretes, tubes, sheathing, prestressing steels, classifications, specification, verifications, markingenglish versionsteel strip sheaths for prestressing tendons test methods part 1: determination of shape and dimensionsgaines en feuillard dacier pour ca bles de pre contrainte me thodes dessai partie 1: de termination de la forme et des dimensionshu llrohre aus bandstahl fu r spannglieder pru fverfahren teil 1: ermittlung der formen und maethis european standard was approved by cen on 1997-01-27. cen members are bound to comply with the cen/cenelec internal regulations 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 application to the central secretariat or to any cen member.this european standard exists in three official versions (english, french, 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 national standards bodies of austria, belgium, denmark, finland, france, germany, greece, iceland, ireland, italy, luxembourg, netherlands, norway, portugal, spain, sweden, switzerland and united kingdom.ceneuropean committee for standardization comite europe en de normalisation europa isches komitee fu r normungcentral secretariat: rue de stassart 36, b-1050 brussels1997 copyright reserved to cen members.ref. no. en 524-1 : 1997 epage en 524-1 : 1997bsi 1997forewordthis european standard has been prepared bytechnical committee cen/tc 104, concretecontentspage(performance, production, placing and compliance criteria), the secretariat of which is held by din.1scope32normative references33apparatus and accuracy34internal diameter, height of profile and wall thickness of sheaths35relative volume of profile3this standard is a part of the series en 524 sheaths for prestressing tendons test methods whichadditionally comprises the following parts part 2 determination of flexural behaviour part 3 to-and-fro bending test part 4 determination of lateral load resistance part 5 determination of tensile load resistance part 6 determination of leaktightness(determination of water loss)these european standards apply to en 523 steel strip sheaths for prestressing tendons terminology, requirements, quality control.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 byseptember 1997, and conflicting national standards shall be withdrawn at the latest by september 1997.according to the cen/cenelec internal regulations, the national standards organizations of the following countries are bound to implement this european standard: austria, belgium, denmark, finland, france, germany, greece, iceland, ireland, italy, luxembourg, netherlands, norway, portugal, spain, sweden, switzerland and the united kingdom.foreword 2page 3en 524-1 : 19971 scopethis european standard specifies the procedure for determining the shape and dimensions of sheaths for prestressing tendons which comply with en 523.2 normative referencesthis european standard incorporates by dated or undated reference, provisions from other publications. these normative references are cited at the appropriate places in the text and the publications are listed hereafter. for dated references, subsequent amendments to or revisions of any of these5 relative volume of profilea test specimen with a length of at least l = 500 mm1) shall be sealed at one end so that it is watertight. the total volume vtot of the hollow space inside the specimen shall be determined by filling the specimen with water and then measuring the content (seefigure 2). the volume vref and the surface area aref of the reference cylinder shall be calculated from the mean internal diameter d1 as described in clause 4 and the length l of the test specimen. the relative volumeof the profile (vrel) measured in cm3/cm2 is calculatedusing the following equation:vtot 2 vrefpublications apply to this european standard onlywhen incorporated in it by amendment or revision. for undated references the latest edition of the publication referred to applies.vrel =wherearefen 523steel strip sheaths for prestressing tendons terminology, requirements, quality control3 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 calliper (accuracy of 0,1 mm) micrometer gauge (accuracy of 0,01 mm)4 internal diameter, height of profile and wall thickness of sheathsthe internal diameter, d1, and the height of profile, h, shall be determined by means of a vernier calliper using the specimen described in clause 5. measurements shall be taken at both ends of the specimen in two directions at right angles to one another (see figure 1) before the specimen is sealed. the mean values shall be calculated from the values obtained.the wall thickness shall be measured by a micrometer gauge at least at four different points.aref (= 3 d1 3 l) is the surface area of thereference cylinder (in cm2);vref is the volume of the reference cylinder (in cm3);vtot is the volume of water in the specimen (in cm3).figure 1. internal diameter, height of profile and wall thickness of sheaths1) it is recommended that the specimen length chosen is such that the specimen can be used for the other test.bsi 1997page en 524-1 : 1997figure 2. test set-up for determining the total volumebsi 1997blankbsi389 chiswick high roadlondonw4 4al| bsi british standards institution| bsi is the independent national body responsible for preparing british standards. it| presents the uk view on standards in europe and at the international level. it is| incorporated by royal charter.| revisions| british 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