In this episode, we talk to Mo Ehsani Ph.D., PE, SE, F.ASCE, FACI, from QuakeWrap, Inc. about how the field of structural engineering has evolved with the introduction of composite materials like FRP (fiber reinforced polymer), the advantages that FRP technology has over traditional concrete and steel repair solutions, and the differences between infrastructure repair projects in the water and on land. He also shares some examples of successful infrastructure repair projects that have utilized FRP technology and provides insights into how this technology can benefit structural engineers. ***You can view the video version of this episode here.*** Engineering Quotes: Here Are Some of the Questions We Ask Mo: How has the introduction of composite materials like FRP affected the approach to infrastructure repair projects in the field of structural engineering? What are the advantages of FRP technology compared to traditional concrete and steel repair solutions? How easy is it to use carbon fiber wrap for repairing tension elements, and what materials are required for the repair process? Are there any limitations to FRP technology, and if so, how do you overcome them? When using Quake Wrap for retrofitting, would the engineer of record design it or would you be some type of consultant, how does that typically work for structural engineers? How does the use of FRP materials extend beyond seismic retrofitting to address infrastructure repairs both in water and on land, specifically concerning corrosion projects and the impact of corrosion on concrete? What measures can be taken to prevent water from getting into a structure and reinforcing its existing seal? Can you provide additional examples of infrastructure repair that you would like to discuss? Can you share your experience of pursuing a non-conventional career path in structural engineering? What were some of the challenges you faced along the way, and how did you make decisions about your career path? How can an entrepreneurial mindset be beneficial when pursuing something that you are passionate about, even if you don't initially know how to do it? Here Are Some of the Key Points Discussed About FRP Technology and Infrastructure Repair with Composite Materials: The initial idea behind composite materials like carbon fabric, which are strong in tension, was to earthquake-proof bridges by wrapping them around the columns, but over the years these materials have proved to be very versatile and are now commonly used for corrosion repair, strengthening, and other structural engineering applications due to their lightweight, easy application, high tensile strength, durability, and corrosion-resistant properties. FRP technology offers advantages over traditional concrete and steel repair solutions, such as being able to retrofit buildings without adding thickness or weight, which is particularly useful when space is limited. Unlike traditional reinforcement methods, using FRP materials does not require chipping away concrete or adding an extra layer of protection. They are lightweight, easy to transport, and quick to apply, with curing times typically around a day. Additionally, FRP materials can provide up to two to three times the strength of steel and can be applied directly to the tension face of an element, maximizing the moment capacity. The ease of construction with FRP technology is a significant advantage because the carbon fiber wrap comes in a roll and can be easily cut to the desired length, making it simpler to apply, especially in occupied buildings. The strength of composite materials like FRP comes from the orientation of the fiber, and this offers unique opportunities to use the materials efficiently. Unidirectional fabrics are effective for strengt...