This British Standard specifies requirements for plain, indented and ribbed steel wire used for the reinforcement of concrete products.<\/p>\n
The standard contains provisions for two grades, based on mechanical properties. Grade 500 is specified for plain, indented and ribbed wires. Grade 250 is specified as an option for plain wires only.<\/p>\n
Bar or coil for the manufacture of structural welded fabric to BS 4483 is not covered by this standard. BS 4449:2005 covers bar or coil for this purpose.<\/p>\n
Wire for the prestressing of concrete and wire used for ties, lifting and other general engineering or industrial purposes is not covered by this standard.<\/p>\n
The nominal wire diameter (size) range specified in this standard is 2.5 mm to 12 mm.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | Committees responsible for this British Standard <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions reinforcing steel ribbed reinforcing steel longitudinal rib transverse rib <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | rib height h rib spacing indentation spacing c angle of transverse rib or indentation inclination \u00df transverse rib flank inclination \u00b5 relative rib area fR indented reinforcing steel indentation depth t indentation width b plain reinforcing steel coil decoiled product <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | nominal cross-sectional area An welded fabric characteristic value minimum value maximum value batch semi-finished product standard property technical class <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4 Symbols List of symbols <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | 5 Designations 6 Steelmaking and manufacturing processes 7 Product characteristics 7.1 Chemical composition Chemical composition (maximum % by mass) <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 7.2 Mechanical properties Characteristic tensile properties 7.3 Dimensions, mass per metre and tolerances <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Nominal cross-sectional area and mass per metre of preferred diameters 7.4 Bond strength and surface geometry <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Rib geometry example with two rows of transverse ribs Ranges for rib parameters Characteristic relative rib area <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | Indentation geometry (example with three rows of indentations) Ranges for the indentation parameters Depth of indentations <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 8 Evaluation of conformity 8.1 Routine inspection and testing Absolute minimum values of tensile properties <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 8.2 Assessment of the long-term quality level <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Coefficient k as a function of the number n of test results (for a reliable failure rate of 5 % [p = 0.95]at a probability of 90 %) Coefficient 9 Test methods <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 10 Identification 11 Verification of properties in the case of dispute 11.1 Mechanical properties 11.2 Product analysis <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | (normative) Bond test for ribbed and indented steel wire – Beam test (normative) Bond test for ribbed and indented steel wire – Beam test Introduction Principle of the test Dimensions of the hinge for beam type A (d < 16 mm) <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Dimensions of the hinge for beam type B (d U 16 mm) Beam test type A (d < 16 mm) <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Beam test type B (d U 16 mm) Samples and specimens Series of reinforcing wire diameters for testing of bond <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | Test equipment Moulds for the test beams, made of steel, cast iron or any other non-absorbent material which does not react with the components of the concrete. Watertightness and dimensions shall be maintained after use. Steel hinges, formed from two pieces of steel in a T shape, as shown in Figure A.1 and Figure A.2, which interconnect the transversal interior faces of the two blocks. The width of the hinge is the same as the width, b, of the beam. System for regulating forces, fitted to the mechanism for applying forces, which enables them to be increased continuously, within the limits described in A.6. Force application system, for applying forces perpendicular to the face of the beam specimen. Instruments for measuring forces, with an accuracy of at least 1 % of the test result. Instruments for measuring slip, accurate to \u00b10.01 mm. Preparation of samples Reinforcing steel to be tested Auxiliary reinforcement Plastic sleeves Concrete <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | Bond test type A (d < 16 mm) – Reinforcement of beam specimens <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | Bond test type B (d U 16 mm) – Reinforcement of beam specimens <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | Execution of the tests Test results Calculation of the bond stress <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | Values of bond stress Test report <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | (normative) Identification requirements (normative) Identification requirements Coils – Identification of the manufacturer Ribbed or indented wires Example of manufacturer\u2019s identification mark (using widened ribs) <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | Identification of the country of origin Plain wires Decoiled product In addition to the manufacturer\u2019s identification placed onto the coil product, an identification mark of the decoiler shall be either made on the product or printed on an attached label. The product number shall be applied to the product prior to decoiling by the rolling mill or the processor. <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Steel wire for the reinforcement of concrete products. Specification<\/b><\/p>\n |