Diane M. Fiorelli, PE, GE, LEED AP


Diane Fiorelli’s expertise 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.