Have an attendance code? Sign In to enter it. This live web event has ended. Thank you for attending. Contributors Karl Telleen, S.E. Karl, an Associate Principal at Maffei Engineering, has 15 years of professional experience, including a wide range of project types such as design of new steel and concrete structures, seismic evaluation and retrofit of existing buildings, seismic peer review of high-rise buildings, and design and analysis of solar arrays subjected to wind and seismic forces. He contributed to design guidelines and analysis approaches for solar arrays, including the SEAOC Solar Photovoltaic Systems Committee documents SEAOC PV1 (seismic design) and SEAOC PV2 (wind design). He has worked with manufacturers on product development of solar support structures, and he has performed technical investigations into wind-related failures. Badri Prasad, S.E. Badri Prasad, S.E., has over 30 years of experience in the design of various types of structures, such as healthcare facilities, biotechnology facilities, mid- and high-rise structures, schools, and seismic retrofit, among others. He was a member of the SEAONC Seismology Committee’s concrete subcommittee and was instrumental in publishing the committee’s work titled “Concrete Slabas a Collector Element” in the 2008 SEAOC Blue Book. He is the project manager and author of two design guides, related to the design of concrete diaphragm and collectors, published by NCSEA. He has published several papers on buckling restrained braced frames and a research paper on base-isolation system.