How long is the rebar


Reinforcing steel or reinforcing steel is concreted into the concrete. Ribbed or profiled steel is usually used as reinforcement steel. The ribs create a local interlocking between the concrete and the steel, which enables the force to be transmitted. Smooth steel has a lower load capacity than ribbed steel and is usually of a lower quality. However, its disadvantages can be partially or completely offset by design measures (hooks, etc.). The use of smooth reinforcing steel is no longer permitted in the standards for reinforced concrete construction.

The reinforcing steel is used either as bar steel (straight or on the ring) or as a welded mat. It is quite common to bring in already corroded steel, but it must be ensured that it is completely embedded in the concrete, i.e. does not come into contact with air or water. This is because further corrosion could burst the concrete through expansion of the rusting steel. If the reinforcing steel is enclosed by concrete, the cement stone contained therein protects it from further corrosion due to its alkaline environment. In addition, reinforcing steel can be hot-dip galvanized or coated with epoxy. The building authority approved stainless steel is used more frequently.

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