Mark III’s mechanical scope for Microsoft’s office building tenant improvement in Berkeley California included HVAC, hydronic piping, and plumbing. The majority of the project scope was below the raised floor, including (28) underfloor units, plenum, plumbing, and hydronic piping. The underfloor units required heated hydronic piping, in addition to duct sock to support over (250) swirl floor diffusers. The project required careful coordination between subcontractors in order to ensure successful installation in the congested underfloor space. Overhead scope included the installation of (3) Daikin VRV systems to serve the facility’s training room and (2) IT rooms. Mark III’s mechanical team also installed (60) acoustical transfer ducts through the building, allowing for air to travel and return while maintaining the acoustical requirements required for the customers security purposes.