The western half of Cal Memorial Stadium is built on
unconsolidated soils and the eastern half on a cut slope, and consequently
there is cracking of the settling structure. Not all
of the cracking is due to the settling of the ground,
The Hayward Fault passes through section KK
of the stadium and
the expansion joints
are clearly visible. Underneath the stands, recently-patched cracks in the
columns indicate the steady creep
along the fault.
The University recognizes
of the Hayward Fault and the
damage and economic consequences that are likely, and is presently proceeding with a
retrofit (upgrade) buildings
"poor" for life safety. The
for this program is estimated at over $1 billion (over $14 million for the stadium alone, according to a 1997 figure), and the
estimated timeframe for completion of work is 20-30 years.
The Stadium is one of several sites where the
Berkeley Seismological Laboratory monitors the motion of the ground. As part of a project to study the Hayward
fault with the USGS, the BSL has installed sensors in a borehole
located on the north side of the stadium at station
Further east, in the Byerly vault up in Strawberry Canyon, the BSL maintains station
BKS. The Memento Mori project, put together by Ken Goldberg, provides a unique perspective on our proximity to the forces of nature by merging art, philosophy, and seismograms being recorded at this site.