HBI Haerter AG (CH), HBI Haerter GMBH (D) and HBI Haerter LTD (UK) are firms of consulting engineers.

Services:

• design, planning and implementation of projects in the fields of tunnel ventilation
• air-quality studies
• risk analysis and safety issues
• aerodynamics and thermodynamics of road and rail tunnels and other underground facilities

HBI offers the entire range of services related to a tunnelling project – from first feasibility studies to final acceptance tests including detail studies, project realisation, site supervision and measurements. HBI also has wide experience with refurbishment and optimisation of operations.