Bernd Hagenah joined HNTB's national tunnel practice as principal engineer tunnel ventilation and fire life safety, and associate vice president. Hagenah's has over two decades of experience, which includes tunnel ventilation and climate, safety, rail aerodynamics and thermodynamics, and site ventilation. His underground projects expertise includes peer review expert for tunnel ventilation and fire and life safety for the largest underground rail project in Germany; peer review of tunnel ventilation and expert opinion about tunnel ventilation concept and control concept for several rail tunnels in Israel; climate assessment for a new 30km metro line in Germany; peer expert tunnel ventilation, climate and aerodynamics for a large tunnel project in the northeast US; and design lead for tunnel ventilation, climate and aerodynamics on two new double bore metro lines in Australia.
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