Pressuremeter is an in-situ testing used in geotechnical investigations to evaluate the stress-strain behavior of soils and rocks. Pressuremeter testing offers a conservative estimation of undrained shear strength (Su) in cohesive soils than laboratory methods such as UU Triaxial and UCT in representing in-situ conditions. It functions by applying radial expansion only, without inducing vertical stress on the surrounding material. Pressuremeter generates radial stress (σr) and circumferential stress (σθ) within the soil mass. Geotechnical parameters playing crucial role for slope stability analysis, foundation design, and infrastructure development. This study provides an assessment of undrained shear strength, deformation modulus, and in-situ horizontal stress in volcanic cohesive soils derived from pressuremeter data. Menard pressuremeter testing was conducted at depths between 8 and 50 m within the Qyu geological formation, which is predominantly composed of volcanic material. Additionally, this paper also presents an approach to Mohr Circle failure from pressuremeter. The Mohr's circle approach which requires deviatoric stress and normal stress will be connected to the radial and circumferential stress from the pressuremeter results. With this concept, a Mohr circle will be obtained which can produce an undrained shear strength value.