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1、INTERNATIONAL STANDARD IS0 10544 First edition 1992-12-15 Cold-reduced steel wire for the reinforcement of concrete and the manufacture of welded fabric Fils en acier B beton transform 2,33 is the value for the acceptability index, k, for n= 15 for a failure rate of 5 % (p= 0,95) at a probability of
2、 90 % (1 - a = 0,90). 7 , Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 22:19:04 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 10544:1992(E) If
3、the condition stated above is not fulfilled, the index -fk k = “l “ s, is determined from the test results available. Where k 2, testing can be continued. In this case 45 fur- ther test pieces shall be taken and tested from dif- ferent coils or staightened wires, so that a total of 60 test results a
4、re available (n = 60). The test unit shall be considered to comply with the requirements if the condition stated below is fulfilled for all properties: 4, - I,93 X S0 fk where I,93 is the value for the acceptability index, k; for n = 60 for a failure rate of 5 % = 0,95) at a probability of 90 % (1 -
5、 a = 0,90). 11.3.3.2 Inspection by attributes When testing , properties specified as maximum or minimum values, all results determined on the 1 5 test pieces shall comply with the requirements of this International Standard. In this case the test unit shall be considered to comply with the require-
6、ments. The tests can be continued when at most 2 results not conforming to conditions occur. In this case 45 further test pieces: from different coils or straightened wires in the test, unit shall be tested, so that a total of 60 test results are available. The test unit complies with the requiremen
7、ts if at most 2 of the 60 results do not conform to the conditions. 11.3.3.3 Chemical composition Both test pieces shall comply with the requirements in clause 6. 11.4 Verification of guaranteed minimum values Tests shall be carried out according to the following. - - - - For the purpose of testing,
8、 the delivery shall be subdivided into test units with a maximum mass of 50 t or a fraction thereof. Each test unit shall consist of products of the same nominal diameter from the same cast. When required by the pur- chaser, the chemical composition (cast analysis) shall be stated in the test report
9、. For each mechanical property specified, one test shall be carried out for each test unit. Each indi- vidual test result shall meet the requirements specified in clause 7. If any test result does not meet the requirements, retests may be carried out, according to IS0 404. The manufacturer shall sub
10、mit a test report stat- ing that products of the delivery satisfies the mechanical properties specified in clause 7, and a confirmation that the other requirements of this International Standard are fulfilled. 12 Test report The test report shall contain the following infor- mation: a) works produci
11、ng the steel wire; b) designation of the wire according to clause 9; c) number on th.e bundle; d) name of the organization carrying out the test, if appropriate; e) date of testing; f) mass of the test unit; g) test results. 8 Copyright International Organization for Standardization Provided by IHS
12、under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 22:19:04 MDTNo reproduction or networking permitted without license from IHS -,-,- IS0 10544:1992(E) Annex A (informative) Identification of origin on the wire If the manufacturer is identified by a numb
13、er, this number can be indicated by the ribs or the indentations as shown in figure A.1 or A.2. Start Works No. 40 I3 x IO + IO x I) Olrectlan at reading Figure A.1 - Example of identification of manufacturer on ribbed wire Start Works No. 68 (6 x 10 + 8 x I) A * j-yT.fgk/-?/. - * Dlrectlon of readi
14、ng Figure A.2 - Example of identification of manufacturer on indented wire 9 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 22:19:04 MDTNo reproduction or networking permitted w
15、ithout license from IHS -,-,- IS0 10544:1992(E) Annex B (informative) Bibliography I IS0 3534:1977, Statistics - Vocabulary and symbols. 2 IS0 8402:1986, Quality - Vocabulary. S IS0 8930:1987, General principles on reliability for structures - List of equivalent terms. 4 ISOAEC Guide 2:1991, General
16、 terms and their definitions concerning standardization and related activities. 10 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 22:19:04 MDTNo reproduction or networking permi
17、tted without license from IHS -,-,- IS0 10544:1992(E) UDC 669.14.018.29-I 22-427:672.85:691.328 Descriptors: concrete, reinforced concrete, reinforcing steels, welded wire lattice, iron and steel products, cold drawn products, wire, specifications, dimensions, mechanical properties, chemical composi
18、tion, tests, designation, marking, certification. Price based on 10 pages Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 22:19:04 MDTNo reproduction or networking permitted without license from IHS -,-,-