Contra Costa County Administration Building

Project Details

square feet
days to erect
Location: Martinez, CA
Owner: Contra Costa County
GC: Hensel Phelps
Engineer: Thornton Tomasetti
Architect: Fentress Architects / KMD Architects

Project Narrative

Replacing the current Contra Costa County Administration building, this new four-story structure is designed to be more efficient and community friendly. The building will house a variety of county departments including a large assembly chamber, offices, conference rooms, work stations and support spaces. The structure is set to achieve LEED Gold certification.

Download Project Bio

This project has a ConXL 400 chassis:

Lower & Locking™ Connection

ConXL 400

Height & Assembly Speed

  • 2 to 10 Stories

  • 10 to 15,000 ft2 per day

Design Parameters

Column Size 400 mm (16″ HSS or Box)
Beam Depth 18″ to 30″ for SMF, deeper for OMF
Beam Spans 18′ to 45’+