homepage home
subscribe to California Construction magazine subscribe
newsletters free e-newsletter
advertise
industry jobs industry jobs
Mcgraw Hill Construction
California Construction Logo
Order Your RISK FREE Subscription
comment

Bay Area Stadium Rehab Boosts Seismic Safety

Text size: A A

Best Sports/Entertainment Project: California Memorial Stadium, Berkeley

Photo by Tim Griffith
The upgraded sports facility can accommodate up to 2 ft of vertical and 6 ft of horizontal movement during an earthquake.
Photo by Brett Young/Modulus Consulting
----- Advertising -----

Built in 1923 as a memorial to those Californians who died in World War I, the historic Beaux Arts stadium was in dire need of a complete renovation and seismic safety upgrades. The stadium, added to the National Register of Historic Places in 2006, sits above the active Hayward Fault. The structure received a "poor" seismic-safety rating before the renovation.

Working within a tight schedule to avoid disrupting the college football season, the project team began planning an efficient construction sequence more than a year before groundbreaking.

The stadium's perch above the Bay Area provided only one entryway for numerous materials deliveries. At its peak, there were 500 workers on the site. The contractor temporarily paved over the playing field to provide additional staging space.

The upgraded sports facility can accommodate up to 2 ft of vertical and 6 ft of horizontal movement during an earthquake. To accomplish this, structural engineers designed the building as discrete blocks that allow for movement.

The historic facade—featuring walls up to 90 ft high—was preserved through the use of five different shoring and underpinning systems, which permitted the interior spaces to be demolished without damaging the structure. The historic wall also provided a shell for 50,000 cu yd of new concrete.

The facade's arches were restored to their original design. Infill glass installed during an earlier renovation was removed and replaced with new frameless glazing with glass mullions to minimize their visual impact. A coating applied during the 1960s that contained lead and asbestos had to be abated to reveal the original facade surface, which then was finished with a potassium silicate mineral stain to match its original color.

A 375-ft-long, cantilevered, elevated press box spans 90 ft between vertical supports. It was assembled in sections on the playing field before being lifted into place using a Liebherr 1750 crawler crane. The press box features a contemporary design that appears to float above the stadium, distinguishing it from the historic elements.

Key Players

General Contractor Webcor Builders, San Francisco

Owner University of California, Berkeley

Lead Design HNTB Architecture, Los Angeles

Associate Architect STUDIOS Architecture, San Francisco

Structural Engineers Forell/Elsesser Engineers Inc., San Francisco; AJ Miller & Associates, Oakland

Civil Engineer Bellecci & Associates, Concord

MEP Engineer WSP Group, San Francisco

Historical Architect Knapp Architects, San Francisco

Keywords:

----- Advertising -----
New Blog: Vertically Speaking in Northern California
New Blog: Field Notes
Reader Photos
Photos from California Construction Photo Showcase
Dodge Lead Center
Search for local construction projects OR CALL 877-234-4246 and get a FREE Lead Now!
Search by Project Type & State





----- Advertising -----
 Reader Comments:

Sign in to Comment

To write a comment about this story, please sign in. If this is your first time commenting on this site, you will be required to fill out a brief registration form. Your public username will be the beginning of the email address that you enter into the form (everything before the @ symbol). Other than that, none of the information that you enter will be publically displayed.

We welcome comments from all points of view. Off-topic or abusive comments, however, will be removed at the editors’ discretion.