Over the past 28 years, Mr. Drerup has investigated performance concerns at hundreds of buildings and structures. His work has ranged from single family homes to large building collapses. Mr. Drerup has evaluated damage attributable to earthquakes, blast, impact, fire, water intrusion, corrosion, construction defects, and other factors. He has served as a testifying expert in several cases. Mr. Drerup has also developed and retrofit designs for existing buildings. He has previously worked for two prominent forensic engineering firms and an international structural design firm. In 2014, he established Drerup Building Performance Engineering, PLLC with his partner Alicia Díaz de León, PE, SE, AIA, and continues to collaborate with other consultants and laboratories nationwide to investigate a broad range of issues pertaining to structure, enclosure, and construction materials. Mr. Drerup recently completed two terms as a voting member of ASCE’s Board Committee on Technical Advancement. He serves on ASCE’s Joint Task Committee with CROSS-US, and is past chair and a 22-year member of ASCE’s Forensic Engineering Division.