B602 is a Navy Seals training barracks that fronts the Pacific Ocean and is located approximately 192 feet from the Mean High-Water Mark. B602 was designed in 1969 as a Military Construction project. B602 is a 168-person 3-story barracks with 14 four-person sleeping rooms on each floor arranged in a pinwheel configuration around a service core.

The project will renovate the facility including all interior finishes, living quarters, bathrooms, laundry rooms, and common areas. The project will replace the plumbing system, energy supply, hot water supply, and fire protection systems.

Two repair and renovation projects were completed for B602 in 1990 and 2005. PacRim is serving as the Civil Engineer Designer of Record for the current design-build renovation project for this facility, which was awarded at the end of FY23. Design began in late 2023 with the following civil scope elements:

  • Replace all utility laterals and equipment to include Domestic Water, Fire Water, Sewer, and Natural Gas.
  • Design and install infrastructure to support a new elevator system to comply with ADA, including a new outdoor electrical transformer and switchgear enclosure. Provide floodproofing of the enclosure for projected storm surge elevations up to 6 feet above the B602 finish floor elevation.
  • Relocate a fire hydrant and lateral due to the new elevator system.
  • Provide a new patio deck and furniture as an outdoor amenity for residents.
  • Demolish and repair pavements to support multiple HVAC equipment pads.

PacRim supported a dynamic design team that addressed various renovation issues and defects within the facility. PacRim supported various design changes across the design submittal phases as a result. Particularly close coordination between civil, structural, electrical, and architectural was needed for the transformer enclosure design due to the waterproofing requirement and overlapping ATFP requirements for such enclosures. The builder also requested an early foundation and civil package after the concept design, which PacRim was able to provide. Lastly, This was one of the first projects aboard Naval Amphibious Base Coronado to address storm surge risks. PacRim evaluated various drainage discharge options for stormwater accumulation inside the enclosure to develop a low-maintenance valve system during surge flood events. The project began construction in 2024 and will be completed in 2025.