As a structural and civil engineer and expert forensic consultant with nearly four decades of experience, Casey Hemmatyar has provided extensive expert services for defendants and plaintiff attorneys on numerous construction litigation matters throughout US. He has been retained as an expert by US Government and private law firms on single and class-action lawsuits at both State and Federal levels (partial list of litigation cases is available upon request). His understanding of core engineering and legal concepts has enabled him to effectively assist a wide range of clientele. He brings diversified experience in structural and civil engineering design, and in forensic engineering, investigation, and evaluation. Mr. Hemmatyar also conducts research and has assisted in development of building codes and standards, and has supervised construction of domestic and international projects. His experience includes special structures, and new buildings as well as modifications, alterations, seismic/hurricane retrofits, and upgrades to existing structures. He has provided failure analysis, expert consultation, structural forensic investigation, and damage assessment services for many litigation and insurance related matters. He actively presents continuing education lectures to audiences of engineers, architects, and contractors on topics of structural and forensic engineering throughout the United States. Mr. Hemmatyar has been the principal structural engineer on projects for clients such as NASA and several other high-profile agencies. Currently he directs PSFEG, and has served as Director for SEAOSC in 2011-2013.Mr. Hemmatyar’s assignments include facilities such as hospitals/healthcare, schools/higher education, telecommunication, government, recreational, laboratories, commercial, industrial, and residential structures. He is versed in the structural design of concrete, steel, timber/wood, masonry, aluminum, glass, light-gage steel, and other construction materials. His work experience covers performance-based design, seismic hazard evaluation and mitigation methods as well as preparation of reports evaluating essential structures such as hospitals and health care facilities.Mr. Hemmatyar has been interviewed by public media including H2 History Channel (episode: “Collapse of Ancient Structures”) and Reuters (Mexico City school collapse). His experience also covers:■ Investigation and evaluation of structural integrity of existing structures,■ Expert consulting, court appearance and trial testimony.