Diane M. Fiorelli, PE, GE, LEED AP


Diane Fiorelli’s  has 20 years of experience in the integration of geotechnical engineering design with the seismic, civil, structural and environmental aspects of a projects have resulted in cost and schedule saving design solutions for a variety of project and foundation types for projects throughout the United States. She also has extensive experience with environmental site assessment, site acquisition support, and permitting in California.

As a Principal at Langan, Fiorelli leads a group of engineers who are recognized for their creative and collaborative approach to complex projects that include stadiums, high-rise and mid-rise infill developments, brownfields redevelopments and academic projects.

Fiorelli has volunteered for number of years for the Deep Foundation Institute Seismic and Lateral Load Committee and in the past has served on the Structural Engineering Association of Southern California Foundation Committee.