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Emergency Ventilation & Smoke Management Services
At the forefront of transit environment system design for many years, Hatch Mott MacDonald’s cutting-edge skills successfully address the various issues associated with the design of systems for today’s modern rail and road networks. Remaining at the forefront of tunnel ventilation, operation, and control, HMM maintains a serious and active interest in these issues worldwide and continuously participates in and monitors advances in technology and methodology.
We have an established reputation in environmentally sensitive design to minimize adverse effects inside the tunnel and within the tunnel vicinity, including noise attenuation measures and integration of ventilation facilities with architectural features. This includes designing and implementing facilities for the safe collection and disposal of hazardous spills, analyzing levels of carbon monoxide and other pollutants in the tunnel environment, designing ventilation systems to maintain high air quality, undertaking simulations of exhaust emissions, dispersing smoke from tunnel portals, and finally, designing measures to alter the dispersion pattern.