Your encyclopedia of terms used in the industrial flooring industry.

Summary

Lap - Short for overlap, lap is a term used to define the region in which two sections of reinforcement overlap in reinforced concrete construction.

Technical Information

Making reinforcement long enough to cover the whole length of a concrete element is impractical, so it is necessary to use multiple bars or sheets of mesh. To ensure that the whole element is covered, and there are no weak points in the reinforcement, these bars are made to overlap at the ends.

When reinforcing mesh is used in a concrete slab, the lap can be inconvenient as the mesh has to overlap in two directions, meaning that in some locations, four sheets of mesh will be overlapping with each other. This problem can be mitigated by the use of mesh reinforcement with flying ends and careful management when placing the reinforcement.

Related Definitions

Flying End , Pitch , Fabric Reinforcement , Restrained Movement Joints , Mesh Sheet

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The CoGri Group, a leading international specialist in concrete flooring, with offices on every continent throughout the world

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