1、 STD.BSI ES EN 514-ENGL 2000 LbZ4bb OBbSb8 177 m BRITISH STANDARD Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors - Determination of the strength of welded corners and T-joints The European Standard EN 5142000 has the status of a British Standard ICs 83.140.
2、99; 91.060.50 BS EN 5142000 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMWED BY COPYRIGHT LAW STD-BSI BS EN 514-ENGL 2000 E lb24bb OBbSb99 O03 E BS EN 514:ZO been prepared under the direction of the Sector Amd. No. Date Committee for Building and Civil Engineering, was published under the authori
3、ty of the Standards Committee and comes into effect on 15 July 2000 Q BSI 07-2000 National foreword Comments This British Standard is the officiai English language version of EN 514:2MH, which is included in a package of new European Stanhds being prepared by CEN/”rC 33 relating to PVGU profiles for
4、 windows and doors. Other standards included in the package are ENS 477,478,479,513 and 12608. Although the English text versions of these European Standards will be adopted as British Standards as they become available, the existing British Standards for PVGU profiles will be retained, but only unt
5、il such time that the complete package of European Standards becomes available. The original group of British Standards wiil then be withdrawn and this will be notified in BSI Standards Update. This British Standard will supersede BS 7413:1991. The UK participation in its preparation was entrusted b
6、y Technical Committee B/538, Doors, windows, shutters, hardware and curtain walluig, to Subcommittee B/538/1, Windows, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and Eur
7、opean developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or
8、 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 the “hd” faciiity of the BSI Standards Electronic Catalogue. A British Standard does not purport to include aJl the n
9、ecessary 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 from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN title page,
10、 pages 2 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. ISBN O 580 36106 3 STD.BSI ES EN 514-ENGL 2000 m lb24bb 0865700 b55 m EUROPEAN STANDARD NORME EUROPEENNE EUROPISCHE NORM EN 514 January 2000 ICs 83.
11、080.20; 83.140.99 English version Unplasticized polyvinylchloride (PVC-U) profiles for the fabrication of windows and doors - Determination of the strength of welded corners and T-joints Profil b) load indication with zero point setting and peak recording; c) measurement accuracy: f 3 %; d) test spe
12、ed: (50 f 5) mm/min. 8 BSI 07-2000 Page 5 EN 514:2000 4.2 Test arrangements 4.2.1 Corner weld samples for tensile bending test (see figure 1) 1 clamping device 3 frame 2 rigid support over a minimum clamping length of 400 mm 4 optional support block (5 i 0,5) mm Figure I: Example of a test rig for a
13、 tensile bending test of corners Q BSI 07-2000 STD.BS1 BS EN SL4-ENGL 2000 Lb24669 0865705 137 Page 6 EN 514:2000 4.2.2 T-joint weld samples for tensile bending test (see figure 2) 1 clamping device 2 rigid support over a minimum clamping length of 400 mm 3 frame 4 optional support block (5 f 0,5) m
14、m Figure 2: Example of a test rig for a tensile bending test of T-joints 8 BSI 07-2000 STDeBSI BS EN SLY-ENGL 2000 W lb2qbb9 OBb5706 073 Page 7 EN 514:2000 4.2.3 Corner weld samples for compression bending test (see figure 3) F. Figure 3: Example of a test rig for compression bending test of corner
15、joints O BSI 07-2000 STDoBSI BS EN 514-ENGL i?DDD W I1624669 0865707 TOT 4 Page 8 EN 514:2000 4.2.4 T-joint weld samples for compression bending test (see figure 4) i Figure 4: Example of a test rig for compression bending testing of corners 5 Test piece 5.1 Welding of the corner test piece The test
16、 piece is a welded corner with an angle of (90 2 1) O. Two lengths of profile cut at 45 O are heat welded. 5.2 Welding of the T-joint test piece The test piece is a welded T-joint with an angle of (90 f I) O. The T-joint is fabricated by heat welding one piece of, for instance, sash or outer frame p
17、rofile at least 500 mm long and one piece of, for instance, transom profile at least 400 mm long. Before welding, the sash or outer frame profile is notched at 2 x 45 O to a depth in accordance with the formula: Q BSI 07-2000 STDoBSI ES EN 514-ENGL 2000 m Lb24bb9 OBb5708 946 m Page 9 EN 514:2000 whe
18、re: w = width of transom profile; s = welder head stroke. The transom profile end is sawn into a symmetrical 90 O point. The position of the 90 O notch in the sash or frame profile is such as to leave a minimum 400 mm leg measured from the top of the transom profile (see figure 2). NOTE: The documen
19、t DVS 2207 Part 25 clauses 2 to 8 contain information about welding procedures which may be of relevance. 5.3 Tensile bending test piece 5.3.1 The inside leg length of the test piece for corner testing shall be at least 400 mm (see figure 1). 5.3.2 The T-joint test piece is fabricated with the sash
20、or frame arms of inside length at least 400 mm and 100 mm, and the transom or mullion stem length at least 400 mm (see figure 2). 5.4 Compression bending test piece 5.4.1 The legs of the corner test piece are cut at an angle of (45 i 1) O in such a way that the neutral axes of the end sections are l
21、ocated vertically over the axes of rotation of the carriage (approximately the middle of the main chamber of the profile) (see figure 3). The inside length of the legs Li in millimetres is obtained from the following formulae: L,=- 400 -283 fi 4 =283-2e where: L, = e = the length of the neutral axis
22、 of the profile in millimetres; the distance between the inside of the section and the neutral axis in millimetres. 5.4.2 The short arm of the T-joint test piece is cut off level with the outer face of the stem to produce a 90 O corner. Further preparation of the corner is in accordance with 5.4.1 (
23、see figure 4). 5.5 Number of test pieces A minimum of three samples per profile type, all made on the same welder head, shall be tested to obtain a mean value. O BSI 07-2000 Page 10 EN 514:2000 6 Conditioning The test pieces shall be conditioned at (23 f 5) OC for at least two hours immediately prio
24、r to testing. 7 Procedure 7.1 Test temperature The test is carried out at a temperature of (23 f 5) OC. 7.2 Tensile bending test 7.2.1 may be used, if necessary, to limit twisting. Clamp the test piece in the apparatus as shown in figures 1 or 2. Contoured support blocks 7.2.2 Apply the load to the
25、test piece in such a way that the speed of application is 50 mm/min. 7.2.3 Continue until the test piece fails. 7.2.4 Note the failure load ft and calculate the failure stress in accordance with annex A. 7.3 Compression bending test 7.3.1 Place the test piece on the trolley as shown in figures 3 or
26、4. In order to avoid excessive deflection, the open frame end of the T-joint can be supported in the corner area by inserting a cavity filling block (e.g. a piece of metal reinforcement or a wooden block). 7.3.2 Apply the load to the test piece in such a way that the speed of application is 50 mm/mi
27、n. 7.3.3 Continue until the test piece fails. 7.3.4 Note the failure load fc and calculate the failure stress in accordance with annex A. Q BSI 07-2000 Page 11 EN 514:2000 8 Test report The test report shall include the following information: a) reference to this European Standard; b) the name of th
28、e test laboratory; c) full identification of the profile(s); d) identification of the joint 1) the type of the joint (corner or T-joint); 2) the presence or absence of welding sprue (bead); 3) if more than one welding head is in use, the nominated head; e) the date of testing; f) the welding conditi
29、ons; g) the test method (tensile bending or compression bending); h) for compression bending testing the inside length of the leg of the test piece; i) the test temperature; j) the failure load for every test piece; k) the calculated failure stress for every test piece and the average failure stress
30、; I) all operating details not specified in this European Standard, as well as any incidents likely to have influenced the results. Q BSI 07-2000 STD.BS1 BS EN 514-ENGL 2000 = Lb24bb9 Ob5711 430 Page 12 EN 514:2000 Annex A (normative) Method for the calculation of the failure stress A.l Tensile bend
31、ing test The failure stress of a welded corner or T-joint depends on the failure load, the profile geometry and the test arrangement (see figures 1 or 2). It is calculated by the formula: where: ft = the failure load determined by tensile bending testing NI; L = the distance between the corner in th
32、e highest flange and the point of application of the load mm; W = the moment of resistance in the loading direction = Ve mm3; I = the moment of inertia about the neutral axis zz (see figure A.l) of the cross section of the profile given by the manufacturer mm4; for T-joints with different profiles,
33、the lower moment of inertia shall be used; e = the distance between the critical point A and the neutral axis zz (see figure A.l) mm; at = the failure stress by tensile bending N/mm2. A.2 Compression bending test The failure stress of a welded corner or T-joint depends on the failure load, the profi
34、le geometry and the test arrangement (see figure 3 or 4). It is calculated by the formula: u, =Fc al(a/2-e/fi)/2W where: fc = the compression bending failure load NI; W = the moment of resistance in the loading direction = Ve mm3; I = the moment of inertia about the neutral axis u (see figure A.l) o
35、f the cross section of the profile given by the manufacturer mm4; for T-joints with different profiles, the lower moment of inertia shall be used; O BSI 07-2000 STD-BSI BS EN SLY-ENGL 2000 Lb24bb9 OBb57LZ 377 Page 13 EN 514:2000 e = the distance between the critical point A and the neutral axis u (s
36、ee figure A. 1 ) mm; a = the distance between the axes of rotation of the carriages = (400 f 2) mm; oc = the failure stress by compression bending N/md. t - z = neutral axis A = points of maximum stress t direction of loading Figure A.l: Position of point of maximum bending stress Q BSI 07-2000 STDm
37、BSI BS EN 514-ENGL 2000 Lb24bbS OBb57L3 203 d Page 14 EN 514:2000 Annex B (Informative) Bibliography The following documents have served as reference documents in the preparation of this European Standard : DVS 2207 Teil 25 Schweien von thermoplastischen Kunststoffen. Heizelementstumpfschweien. Schw
38、eien von Fensterprofilen aus PVC-U (October 1989). Guide Technique UEAtc - Pour lagrment des fentres en PVC (Juillet 1990). Q BSI 07-2000 BSI 389 Chiswick High Road London w4 4AL STD.BS1 BS EN 514-ENGL 2000 1b24bb9 OBb5714 14“ BS EN 514:2000 BSI - British Standards Institution BSI is the independent
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