What is the required overlap for adjacent sheets of geogrid?

The required overlap for adjacent sheets of geogrid is 375 mm. This standard is established to ensure effective load transfer and structural stability when the geogrid is used in applications such as soil stabilization, reinforcement, and in pavement structures.

The overlap allows for continuity in the reinforcement effect by ensuring that adjacent sheets work together in carrying loads and reducing potential weak points. If the overlap is insufficient, it could lead to reduced effectiveness of the geogrid, resulting in potential failure in the structure it is meant to support.

Using 375 mm as the overlap also allows for some variability in placement and ensures that the geogrid will maintain adequate connections without compromising the structural integrity of the layers above, especially in dynamic loading conditions like traffic. This specification reflects industry best practices and research findings, making it a crucial guideline in geotechnical engineering.