"Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. Geotechnical engineering usually uses principles of soil mechanics and rock mechanics to investigate subsurface conditions and materials; determine the relevant physical/mechanical and chemical properties of these materials; evaluate stability of natural slopes and man-made soil deposits; assess risks posed by site conditions; design earthworks and structure foundations; and monitor site conditions, earthwork and foundation construction. In other words, the foundation of any development or construction project is accurate and reliable ground investigation information. Through knowledge, experience, creativity, and commitment to client service; EHAF’s Geotechnical team finds the solutions that help take projects from concept to reality. The experience of EHAF Geotechnical team includes all aspects of tunneling and geotechnical engineering including tunnels layout and design, underground structures, geotechnical analysis (including foundation and slope stability analysis), soil engineering, water analysis ….etc. Today, EHAF is an acclaimed global solution provider whose technical excellence and customer service are ranked among the best. Whether performed in one of our modern laboratories or onsite, EHAF offers a comprehensive suite of geotechnical engineering services, supporting projects of every size and scope with a comprehensive portfolio of services. EHAF is a firm that can provide any project of any scope with a full-service soils analysis lab and materials testing capabilities. EHAF offers a wide range of services including but not limited to: Subsurface investigations and reports, Site evaluation, feasibility and planning studies, Field exploration, soil/rock sampling and laboratory testing, Foundation engineering for new and existing structures, Earthquake ground motion and geologic hazard studies, Geotechnical instrumentation and monitoring, Geo-environmental assessments, Design and detailing of Underground Structures, and Tunnelling. The best way to ensure a quality ground investigation is to provide experienced engineers to supervise investigations in person. Using this 'hands-on' approach, EHAF collects the maximum information for use in developing conceptual ground models, and actively manages issues as they arise on site."