Bewehrungsstoß

Bewehrungsstoß, a German term, translates to "reinforcement splice" or "rebar splice" in English. It refers to the connection or overlap of reinforcing steel bars (rebar) within a concrete structure. This connection is crucial for ensuring the continuous transfer of tensile forces from one bar to another across the splice. Without proper Bewehrungsstoß, the concrete element would not behave as a monolithic unit, potentially leading to structural failure.

There are several methods for creating a Bewehrungsstoß. The most common is the lapping splice, where two reinforcing bars are overlapped by a specific length, known as the lap length. This length is determined by factors such as the bar diameter, concrete strength, and the stress levels expected in the reinforcement. Another method is mechanical splicing, which uses specialized couplers or sleeves to join the rebar ends. This method is often preferred in situations where lap splices would require excessive lengths or where congested reinforcement makes overlapping difficult. Welding is also a possible, though less common, method for joining rebar.

The design and execution of a Bewehrungsstoß are governed by building codes and standards. These regulations specify the minimum lap lengths, the types of mechanical couplers permitted, and the quality control measures required during construction. Proper detailing and installation of Bewehrungsstoß are vital for the structural integrity and long-term performance of reinforced concrete structures.