Two seismic engineers delivered a report on 15 June 2015 describing the findings of a brief seismic evaluation of Berkeley Town House, a 9-story, 60-unit 1960s cooperative apartment building occupied by seniors in Berkeley, California.
The 11-page report, by Joe Maffei and Karl Telleen of Maffei Structural Engineering, begins with a two-page executive summary. The report lists prior documents that were reviewed by the engineers as part of their evaluation:
- 17 pages of structural drawings, 1960
- 1962 interview with engineer (page 5)
- 1990 engineer letter
- 1990 resident letter
- 2000 structural engineering proposal
- 2002 technical report
- 2007 inspection report
- 2009 engineer presentation slides
- 2010 resident rapid visual screening
- 2014 resident rapid visual screening
- 24 pages of architectural drawings, 1960
- 8 pages of mechanical and plumbing drawings, 1960
- 9 pages of electrical drawings, 1960
The report discusses five potential risks from a major earthquake, possible additional investigation, and possible remedial measures that might ameliorate risks if confirmed.
Readers with comments or questions about the report, or about the above-listed documents, are invited to comment below.
Addendum, 7 July 2015:
On 30 June, Maffei and Telleen wrote a one-page memorandum commenting on an additional prior document. That addendum has now been attached to the evaluation. The prior document is also available: