The grand, expansive dining area portal of the center "Spaceship" Ring in Apple's Campus 2 mega-project has reached its ceiling, with a steel structure now only barely visible over the construction barrier from the street, but clearly discernible from the air.

The current view from the north (above) shows just the tip of roof from the street. From higher up, you better can see the progress of the structure, which was just beginning to rise in February and is now topped out. A higher quality version of the video is on Vimeo

Apple Campus 2 Gates, from the sky

Also visible in and around the "Spaceship" Ring are concrete void slabs used to build an interlocking foundation and wall structure, which "serve as both the ceiling of one floor and support for the raised surface of the floor above," Apple has stated. The slabs are now building the first and second floors of the structure.

Void slab construction

Emphasizing the results of working with diverse, local suppliers, Apple details on its jobs website that the concrete void slabs for Campus 2 were sourced from the family-owned firm Clark Pacific. To build the slabs, Clark Pacific was said to have "developed a unique structural design to meet the demands of Apple Campus 2."

Apple also says that Clark Pacific "now has four plants dedicated to producing products directly related to the [Campus 2] project," and has hired new workers to rapidly expand its operations.

"The innovation and manufacturing that went into Apple Campus 2 have also enabled Clark Pacific to expand to other large-scale construction projects up and down the West Coast," Apple stated.

Apple's web site states, "We have approached this [Campus 2 construction] project with the same care and attention to detail we devote to designing any Apple product. We will replace 2.65 million square feet of environmentally and operationally obsolete buildings with a 2.8-million-square-foot iconic, 21st-century research and development campus."

Views from the south, model up close

A previous tour of the Campus 2 construction site last week detailed progress from the southern side (below).

A model of the project (above), photographed by San Jose Mercury News depicts the initial steel structure as supporting an large open dining room area with ceilings tall enough to accommodate large trees, surrounded by a curtain of glass.

Expected occupation by the end of next year

Granted final approval just a year and a half ago, Apple's Campus 2 project is rapidly moving toward its occupancy goal of 2016.

Apple's cofounder Steve Jobs unveiled the huge project in 2011, noting that the central 2.8-million-square-foot "Spaceship" structure would house at least 12,000 employees, surrounded by bucolic landscaping including orchards of fruit trees and other greenery, featuring open space and walking paths to reclaim most of the 150-acre plot previously covered by asphalt parking lots.

Update: Article was updated after publication to clarify that the visible steel structure supports a Campus 2 cafeteria and dining area, rather than simple entry.