1、BRITISH STANDARD BS EN 10056-2:1993 Specification for Structural steel equal and unequal leg angles Part 2: Tolerances on shape and dimensions The European Standard EN 10056-2:1993 has the status of a British Standard UDC 669.14.018.29423.2:621.753.1BSEN 10056-2:1993 This British Standard, having be
2、en prepared under the directionof the Iron and Steel Standards Policy Committee, waspublished under the authorityof the Standards Boardand comes into effect on 15 December 1993 BSI 02-1999 The following BSI references relate to the work on this standard: Committee reference ISM/13 Draft for comment
3、91/38817 DC ISBN 0 580 21486 9 Cooperating organizations The European Committee for Standardization (CEN), under whose supervision this European Standard was prepared, comprises the national standards organizations of the following countries: Austria Oesterreichisches Normungsinstitut Belgium Instit
4、ut belge de normalisation Denmark Dansk Standardiseringsraad Finland Suomen Standardisoimisliito, r.y. France Association franaise de normalisation Germany Deutsches Institut fr Normung e.V. Greece Hellenic Organization for Standardization Iceland Technological Institute of Iceland Ireland National
5、Standards Authority of Ireland Italy Ente Nazionale Italiano di Unificazione Luxembourg Inspection du Travail et des Mines Netherlands Nederlands Normalisatie-instituut Norway Norges Standardiseringsforbund Portugal Instituto Portugus da Qualidade Spain Asociacin Espaola de Normalizacin y Certificac
6、in Sweden Standardiseringskommissionen i Sverige Switzerland Association suisse de normalisation United Kingdom British Standards Institution Amendments issued since publication Amd. No. Date CommentsBSEN 10056-2:1993 BSI 02-1999 i Contents Page Cooperating organizations Inside front cover National
7、foreword ii Foreword 2 Text of EN 10056-2 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-reference Inside back coverBSEN 10056-2:1993 ii BSI 02-1999 National foreword This British Standard has been prepared under the direction of the
8、Iron and Steel Standards Policy Committee and is the English language version of EN 10056-2:1992 Structural steel equal and unequal leg angles Part 2: Tolerances on shape and dimensions, published by the European Committee for Standardization (CEN). It supersedes the requirements for tolerances give
9、n in clause 3 of BS 4848-4:1972 which are withdrawn by amendment. 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 with a British Standard does not of itself confer immunity
10、 from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 6, 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 in
11、dicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 10056-2 September 1993 UDC 669.14.018.29423.2:621.753.1 Descriptors: Iron and steel products, angle irons, structural steels, dimensional tolerances, form tolerances English version Structura
12、l steel equal and unequal leg angles Part2:Tolerances on shape and dimensions Cornires ailes gales et ailes ingales en acier de construction Partie 2: Tolrances de formes et de dimensions Gleichschenklige und ungleichschenklige Winkel aus Stahl Teil 2: Grenzabmae und Formtoleranzen This European Sta
13、ndard was approved by CEN on 1993-08-30. 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 suc
14、h 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
15、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 Unite
16、d Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1993 Copyright reserved to CEN members Ref. No. EN 10056-2:1993 EEN10056-2:1993 BSI 02-1999 2 Foreword This Part of this Europe
17、an Standard has been prepared by ECISS/TC 11 Sections: Tolerances and dimensions, the Secretariat of which is held by BSI. The discussions within ECISS/TC 11 were based on Euronorm 56 : 77 Hot rolled equal angles (with radiused root and toes) and Euronorm 5778 Hot rolled unequal angles (with radiuse
18、d root and toes). This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at least by March1994, and conflicting national standards shall be withdrawn at the latest by March1994. According to the CEN/CENELEC Internal Regu
19、lations, 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, United Kingdom. Contents Page Foreword 2 1 Scope 3 2 Normative
20、references 3 3 Definitions 3 4 Tolerances on shape and dimensions 3 5 Tolerance on mass 3 6 Tolerance on length 3 Annex A (informative) Straightness measurement 5 Table 1 Tolerances on dimensions, squareness and straightness of structural steel equal and unequal leg angles 4EN10056-2:1993 BSI 02-199
21、9 3 1 Scope This Part of this European Standard specifies tolerances on shape dimensions and mass of hot-rolled structural steel equal and unequal leg angles. The sizes of these angles are given in EN10056-1. These tolerances do not apply to equal and unequal leg angles produced from stainless steel
22、. NOTEUntil EN 10056-1 is published, either Euronorms 56 and57 or the corresponding national standards may be used. 2 Normative references This Part of this European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the a
23、ppropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the pu
24、blication referred to applies. EN 10056-1, Structural steel equal and unequal leg angles Tolerances on shape and dimensions (under preparation). EN 10079:1992, Definition of steel products. Euronorm 56 (1977), Hot rolled equal angles (with radiused root and toes). Euronorm 57 (1978), Hot rolled uneq
25、ual angles (with radiused root and toes). 3 Definitions For the purposes of this European Standard the definitions in EN 10079 apply. 4 Tolerances on shape and dimensions 4.1 Leg length (a or b) The deviation from nominal on leg length shall be within the tolerance given in Table 1. For unequal leg
26、angles, the longer leg length (a) shall be used to determine the tolerance band. 4.2 Section thickness (t) The deviation from nominal on thickness shall be within the tolerances given in Table 1. 4.3 Out-of-square (k) Out-of-squareness of the section shall not exceed the maximum given in Table 1. Fo
27、r unequal leg angles, the longer leg length (a) shall be used to determine the tolerance band. 4.4 Straightness (q) The deviation from straightness shall not exceed the tolerances given in Table 1. For unequal leg angles, the longer leg length (a) shall be used to determine the tolerance band. 5 Tol
28、erance on mass The deviation from the nominal mass of any individual piece shall not exceed: a) 6% for thicknesses for t # 4 mm; or b) 4% for thicknesses for t 4 mm. The deviation from the nominal mass is the difference between the actual mass of the piece and the calculated mass. The calculated mas
29、s shall be determined using a density of 7,85 kg/dm 3 . 6 Tolerance on length The tolerance on ordered length shall be either. a) 50mm; or b) where minimum lengths are required. + 100 0EN10056-2:1993 4 BSI 02-1999 Table 1 Tolerances on dimensions, squareness and straightness of structural steel equa
30、l and unequal leg angles Leg length Section thickness Length mm Tolerance mm Thickness (t) mm Tolerance mm a # 50 50 a # 100 100 a # 150 150 a # 200 200 a 1.0 2.0 3.0 4.0 t # 5 5 t # 10 10 t # 15 15 # t 0.50 0.75 1.00 1.20 Out-of-square Tolerance Leg length (a) mm (k) mm a # 100 100 a # 150 150 a #
31、200 200 a 1.0 1.5 2.0 3.0 Leg length Tolerance over full bar length Leg length Tolerance over any part a mm q mm a mm Length considered mm q mm a # 150 150 a # 200 200 a 0.4 % L 0.2 % L 0.1 % L a # 150 150 a # 200 200 a 1500 2000 3000 6 3 3+ 6.04.0 EN10056-2:1993 BSI 02-1999 5 Annex A (informative)
32、Straightness measurement Straightness measurement requires a reference straight edge from which deviations in section straightness are measured. A taut string line is an acceptable straight edge provided that deviations in the horizontal plane only are measured. Measurement is carried out as follows
33、. The angle is placed on one leg on a flat surface and the string is taken along the toe of the other leg of the unconstrained angle for the length under consideration.6 blankBSEN10056-2:1993 BSI 02-1999 National annex NA (informative) Committees responsible The United Kingdom participation in the p
34、reparation of this European Standard was entrusted by the Iron and Steel Standards Policy Committee (ISM/-) to Technical Committee ISM/13, upon which the following bodies were represented: BEAMA Ltd. British Constructional Steelwork Association Ltd. British Steel Industry National Association of Ste
35、el Stockholders National annex NB (informative) Cross-reference Publication referred to Corresponding British Standard EN 10079:1992 BS EN 10079:1993 Definition of steel productsBSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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