SUBTERRA is an independent private corporate group, unconnected to construction companies, suppliers of equipment or services ... and financial companies. Our designs and services are based exclusively on the rigorous analysis of each case, developing technical solutions that optimize the construction costs with the maximum safe and environmental conditions, as well as social compromise with the community. SUBTERRA is certified in ISO 9001, 14001, 37001, 45001 (OSHAS 18001) and 166002. Since our creation SUBTERRA offers services both at the design stage and during construction. As design engineering, its services include field data collection and interpretation, sophisticated support and lining calculations, functional design and security installations; and applied to all phases of feasibility, value, basic, and detailed engineering. In the construction phase, its services extend to the geotechnical monitoring, tunnels and underground spaces. SUBTERRA actually is constituted by the following companies: • SUBTERRA Ingeniería Ltda. in Chile, • SUBTERRA Ingeniería SAS in Colombia, • SUBTERRA Ingeniería SL in Spain, • SUBTERRA India Engineering Pvt. Ltd, and • SUBTERRA Ingeniería SAC in Perú; that functionally act as a unique company organizing its staff and facilities to offer the best services accordingly to the specific characteristics of each project. SUBTERRA has permanent headquarters in Delhi, Lima, Madrid, Medellin and Santiago, as well as several site offices; developing projects during 2019 in fifteen countries. All of them are fully equipped with specific c software tools such as FLAC 2D and 3D, UDEC, PFC, EXAMINE 2D and 3D, FAGUS, STEPS, SOLVENT, SAP2000, among others. SUBTERRA group employs, with nine countries’ technicians, is constituted for a multidisciplinary staff , from which 81 % has University degree, with more than 30 years of experience. SUBTERRA has consolidated worldwide as one of the leading engineering companies specialized in the field of tunnel read more