How Seismic Hazards Affect Our Community and Infrastructure – Ep 066

In this episode, we talk to Chukwuebuka Nweke, Ph.D, an assistant professor of civil and environmental engineering at the University of Southern California, about seismic hazards and the impact of earthquakes on our infrastructure. Engineering Quotes: Here Are Some of the Questions We Ask Chukwuebuka: What made you make the transition from consultant to professor in your engineering career? What types of seismic hazards have you investigated and how do you measure seismic risk? What is a seismic site response? What is the impact of earthquakes on infrastructure? Why is evaluating the seismic hazards damage of urban road infrastructure systems important? How has your involvement in various associations and committees helped grow your engineering career? What advice would you like to give to geotechnical engineers out there? Here Are Some of the Key Points Discussed About How Seismic Hazards Affect Our Community and Infrastructure: Many people early in their engineering careers do not think they will become a professor one day. Most professors continued their engineering career path until it led them to a faculty position. You must have a love for research and be inquisitive to become a professor. Always follow your dreams no matter what life throws at you. You might run into some roadblocks and do some jobs that you are not entirely interested in along the way. We do not know what will happen in the future, but if you continue pushing for your dream, you will likely get what you are dreaming about in the end, and usually not how you planned to get it. Sedimentary basins are formed by an impression in the earth that gets filled with sediments coming from erosion and mass wasting coming from the surrounding hills, which form a flat, low-lying plane. The seismic hazards side effects in these basins are researched because it relates to the induction of hazard levels that affect infrastructure that is critical to life and the safety of the population — and urban areas are largely congregated in these basins. The infrastructure that is affected in these basins is medium to tall buildings and bridges. To quantify the risks, you must first quantify the hazards. A seismic site response is just the response to seismic behavior in a particular location under earthquake excitation, and is influenced by a variety of mechanisms. It is about understanding a site that is a stack of different materials, orientations, and hazards that are at a distance or close by. Earthquakes have a bigger impact on infrastructure in sedimentary basins because the three-dimensional waves bounce back and forth between the surrounding mountains and through the basin. They can cause collapses and loss of life from the shaking alone, as well as fault ruptures, liquefaction, lateral spreading, excessive sediment, landslides, and many others. These damages can destroy lifelines like water and gas pipelines, communication networks, buildings, bridges, and roads. Evaluating the seismic hazards damage of urban road infrastructure systems is important because they service conduits for resources and sustenance. Delays in the transport systems have a vast impact on inflation rates as well as the local, national, and international economy. Being actively involved in various associations and committees will help grow your engineering career because you need a community, mentors, and associates to lean on throughout your career. Every member of a committee serves a purpose for the other members. A community gives you the ability to grow and to help others grow. No matter what level you are on in your career, there will always be something new to learn and better yourself on. Associations and committees are where you can reach out for advice, insight, and inspiration.