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Re: Berkeley balcony collapse

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Keep up the good work. A couple of comments:
The leak(s) here could have been from several sources: deck to wall, door pan, door to wall flashing, the door itself, and least likely the deck membrane. Deck flood testing is usually awkward, and while it might reveal a gross error, often these leaks develop over time and would not be present immediately. Usually the architectural details are very inadequate, but even the best details don't help much without thorough inspection during construction. Typically the workers don't understand or follow the waterproofing details. Insuring compliance requires multiple inspections and City doesn't look at anything other than the roof.. However, the perfect need not be the enemy of the good. At present, the Code & inspections are abysmally inadequate and any additional requirements would be a big improvement. If this ever gets to the point of public hearings (which it should) you might check with the folks at Westcon. These guys specialize in construction defect problems and a number of them are headquartered in the east bay.
Chuck Utzman, PE

On 6/20/2015 5:16 AM, Abolhassan ASTANEH-ASL wrote:


Abolhassan ASTANEH-ASL, Ph.D., P.E., Professor
2013 Minner Faculty Fellow in Engineering Ethics and Social/Professional
Responsibility and
2013-14 U.S. Fulbright Senior Research Scholar
Department of Civil and Environmental Engineering
781 Davis Hall,  MC 1710
University of California,
Berkeley,  CA 94720-1710, USA
Phone; (510) 642-4528

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