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  • BSI
    BS 4449:2005+A3:2016 Steel for the reinforcement of concrete. Weldable reinforcing steel. Bar, coil and decoiled product. Specification
    Edition: 2016
    $418.55
    / user per year

Description of BS 4449:2005+A3:2016 2016

This British Standard specifies requirements for ribbed weldable reinforcing steel used for the reinforcement of concrete structures. The standard covers steel delivered in the form of bars, coils and decoiled products. The standard contains provisions for three steel grades, all of 500 MPa characteristic yield strength, but with different ductility characteristics. The three grades are B500A, B500B and B500C.

The weldability requirements for all grades of steel are specified in terms of the chemical composition, and in particular the carbon equivalent value.

Steel bars produced by re-rolling finished products, or by rolling material of which the metallurgical history is not fully documented or not known, are not covered by this British Standard.

NOTE Flash welds in lengths of bar are permissible under this standard, provided all the mechanical requirements are met. However, for some purposes, purchasers might specifically require bars without flash welds, and if so this ought to be stated at the time of enquiry and/or order.



BS 4449 is intended for manufacturers, fabricators and purchasers of ribbed reinforcing steel (bars, coils and decoiled products) for the reinforcement of concrete structures. It provides designations based on the grade of steel, the product form and dimensions. The standard is used to specify all normal technical requirements for reinforcing steels, including chemical analysis, mechanical properties, rib geometry and tolerances on dimensions.

Standard NumberBS 4449:2005+A3:2016
TitleSteel for the reinforcement of concrete. Weldable reinforcing steel. Bar, coil and decoiled product. Specification
StatusUnder Review
Publication Date2016-03-31
ReplacesBS 4449:1997
AmendsBS 4449:2005+A2:2009, 15/30334782 DC
DescriptorsGrades (quality), Concretes, Dimensions, Elongation, Statistical quality control, Inspection, Mass, Dimensional tolerances, Fatigue testing, Area, Reinforcing materials, Specimen preparation, Unalloyed steels, Performance testing, Reinforcing steels, Bend testing, Reverse-bend tests, Marking, Sampling methods, Weldability, Compositional tolerances, Area measurement, Bars (materials), Chemical composition, Size, Structural steels, Steels, Tensile testing, Tensile strength, Approval testing, Preferred sizes, Quality control, Pull-out tests, Verification, Reinforced concrete, Test equipment, Certification (approval)
ICS77.140.15 Steels for reinforcement of concrete, 91.080.40 Concrete structures
CommitteeISE/104
ISBN978 0 580 92715 7
PublisherBSI
Pages34

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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