Lap Length
Overlapping Length or Lap Length is provided to maintaining the continuity of bars in order to safely transfer the load from one bar to another bar. It depends on the Grade of Concrete, the grade of steel and dia. of the bar.
Why Do We Provide Lap Length?
Reinforcement steel is generally manufactured for a standard 12m length. During construction when steel is to be provided for a length greater than 12m, the bars are lapped to maintain continuity in the reinforced structures. This lap length varies in different RCC structures and generally lies between 30d (d=bar diameter) to 55d depending on the design and grade.
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