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Structural Engineering

Our expertise in structural design and coordination is based on over 66 years of engineering buildings and related structures. Our clients rely on our ability to balance deadlines and budgets with the design insight required for structural work. We offer in-depth knowledge of current building codes, the ability to anticipate the unexpected, and creative insight that makes every project a success.


Soon-Min Kwon
Structural Manager, Principal
Soon-Min Kwon offers 20 years of hands-on structural design and management experience. While he has worked on a range of commercial and educational projects, he has spent the more substantial part of his career focused on healthcare environments including medical office buildings, ambulatory surgery centers, cancer centers, hospitals and large medical campuses. His advanced understanding of OSHPD regulations, patient privacy needs and the imperative for keeping vital services running uninterrupted during projects all serve to make Soon-Min a highly valued partner to clients. His expert knowledge of Integrated Project Delivery has led to the successful delivery of several tenant improvements, seismic retrofits and hospital expansion projects for several prominent health providers. As a resourceful Principal in Charge, his clients are assured a thoughtful, integrated and cost-effective solution to resolve their unique project challenges.

California Civil Engineer No. C68633


Structural Engineers Association of
Central California (SEAOCC)
Lean Construction Institute (LCI)


MS Civil Engineering
UC Davis, Davis, CA

BS Civil Engineering
Kyung Hee University, Seoul, Korea

Siegfried’s Featured Structural Projects

City of Stockton, City Hall Relocation Phases I & IIStockton, CA

Santa Clara Valley Water District, Coyote Pumping Station WarehouseSan Jose, CA

San Joaquin Regional Transit District (RTD), Downtown Transit CenterStockton, CA


Higher Education
Parking Structures
Public Assembly
Public Works
Tall Buildings


Structural Engineering
Construction Engineering
Secure Design
Restoration & Renovation
Forensic Analysis
Seismic Assessment
Seismic Upgrade
Feasibility Studies
Sustainable Design
Blast Design
Historic Renovation
Structural Peer Review
Structural Plan Checking
Damage Assessment
Performance-based Engineering
Vibration Analysis & Design
Building Code Assessment

Project Delivery Experience

Design-Build (DB)
Design Bid Build (DBB)
Integrated Project (IPD)
Public-Private-Partnership (3P)
Construction Manager at Risk (CMAR)

Siegfried Engineering