Geo synthetic testing methods are crucial in the field of geotechnical engineering, ensuring the reliability and performance of geo-synthetic materials used in various applications. Geotechnical testing methods encompass a range of techniques used to assess soil and rock properties, as well as the performance of geo synthetic materials. Common geotechnical tests include triaxial compression tests, direct shear tests, permeability tests, and interface shear strength tests. These tests provide valuable data for designing and constructing geotechnical structures with optimal performance and stability.