BS 6744:2001+A2:2009
$142.49
Stainless steel bars for the reinforcement of and use in concrete. Requirements and test methods
| Published By | Publication Date | Number of Pages |
| BSI | 2009 | 28 |
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 5 | 1 Scope 2 Normative references 3 Terms, definitions and symbols 3.1 Terms and definitions |
| 7 | 0.2% proof test |
| 8 | 3.2 Table of symbols Symbols |
| 9 | 4 Designation 4.1 The steel designation numbers used in this standard shall be defined in accordance with BS EN 10088-1. 4.2 The products covered by this British Standard shall be designated in the following sequence: 5 Standard sizes Standard sizes 6 Dimensions, mass and tolerances 6.1 Effective cross-sectional area and mass per metre run |
| 10 | Nominal cross-sectional area and nominal mass per metre run Tolerances on mass per metre run 6.2 Length 7 Steelmaking process 8 Chemical composition 8.1 Cast analysis |
| 11 | Stainless steel bar chemical composition (cast analysis) % by mass |
| 12 | 8.2 Product analysis 9 Surface quality 10 Surface geometry 10.1 General 10.2 Relative rib area Minimum relative rib area, f 10.3 Geometry of rib |
| 13 | 11 Conditions of supply 11.1 Ribbed bar shall be supplied in coil or straight lengths, or fabricated in accordance with BS 8666 in the following conditions: 11.2 Plain bar shall be supplied in coil or straight lengths, or fabricated in accordance with BS 8666 in the following conditions: 12 Mechanical and physical properties 12.1 Tensile properties Tensile properties 12.2 Total elongation at maximum force, 12.3 Bend test |
| 14 | 12.4 Fatigue test 12.5 Additional test requirements 13 Retests 14 Product identification 14.1 Product marking 14.2 Product labelling |
| 15 | (normative) Determination of the effective cross-sectional area and mass per metre run of ribbed bars (normative) Determination of the effective cross-sectional area and mass per metre run of ribbed bars Uniform cross-sectional area Variable cross-sectional area |
| 16 | (informative) Guidance on grade selection to prevent corrosion (informative) Guidance on grade selection to prevent corrosion Guidance on the use of stainless steel reinforcement for different service conditions (normative) Measurement of the geometrical characteristics (normative) Measurement of the geometrical characteristics Test equipment |
| 17 | Test procedure (see Figure C.1 and Figure C.2) Heights of transverse ribs Height of longitudinal ribs, a´ Transverse rib or indentation spacing, c Pitch, P Transverse ribless perimeter, Cf Transverse rib angle, ¶ Transverse rib flank inclination, ! Determination of the relative rib area, General |
| 18 | Calculation of f Simplified formulae |
| 19 | Formula used for the calculation of f Example of bar showing rib geometry |
| 20 | Rib flank inclination, !, and rib height, a (section A-A from Figure C.1) Determining the area of the longitudinal section of a rib |
| 21 | (normative) Inspection and testing (normative) Inspection and testing Manufacturer’s inspection General Selection of test samples Condition of test samples Tensile test Test records Test certificate |
| 22 | (normative) Bend test (normative) Bend test The units of production from which test samples are selected shall be the batch. Test samples shall be selected from each batch at a frequency of one per ten tonnes. The test shall be carried out on test samples having a temperature between 5 ˚C and 30 ˚C and in such a way as to produce a cont… The test sample shall be bent through 180° using one of the methods of bending described in E.1 round a former of maximum diameter as given in Table E.1. Bend test formers (normative) Method of test for fatigue properties of ribbed bars (normative) Method of test for fatigue properties of ribbed bars Fatigue testing Fatigue test stress ranges Sampling |
| 23 | Test procedure Retests If two or more samples fail to endure 5 × 10 If one sample fails the test, a further five test samples shall be selected from the same batch. If one or more of these samples fail, the batch shall be deemed not to conform to this British Standard. (informative) Comparison of similar specifications (informative) Comparison of similar specifications Comparison between the designation systems used in current and former British Standards and American steel specifications (informative) Guidance on magnetic properties (informative) Guidance on magnetic properties (informative) Third party certification (informative) Third party certification Material covered by a third party product certification scheme Consistency of production |
| 24 | Determination of the long term quality level Acceptability index, k, as a function of the number of test results, n, for a reliable failure rate of 5 % (pass = 0.95) at a probability of 90 % (1 – ! = 0.90) |
| 25 | Acceptance testing General Extent of sampling and testing Properties to be tested Evaluation of results |
| 26 | (informative) Guidance on coefficients of thermal expansion (informative) Guidance on coefficients of thermal expansion Comparative thermal coefficient of expansion data |
| 27 | BS 6744:2001 |
