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Re: Berkeley Balcony Collapse-Professional Photos

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My understanding about "waterproof" decks is not "Will they leak?" but "When will they leak."? Consequently I _always_ require PT framing.
Chuck Utzman, PE

On 6/17/2015 3:24 PM, Ricardo Gonzalez wrote:
Also, the guardposts are the kind that sit on top of the deck. I hate those. The support connections appear to penetrate both the deck sheathing and the bituthene membrane. On one of the photos (#12), you can kind of make out voids on the top edge joist where the guardposts would be. Could that be a source of water intrusion? Just throwing that our there.

I too noticed that the balcony framing is not pressure treated.

This tragic event is so sad. In my own assessment, I wonder what else can a structural engineer do to prevent this. PT or steel framing? Detailing with potential water intrusion in mind?

Ricardo G. Gonzalez, P.E.
C S W | S T 2
CSW/Stuber-Stroeh Engineering Group, Inc.
45 Leveroni Court, Novato, CA  94949
Civil Engineering ∙ Structural Engineering
Planning ∙ Land Surveying & Mapping

main: 415-883-9850          fax: 415-883-9835

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