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Re: Condo Collapse

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The shear walls in the direction it failed in were perpendicular to the
garage door openings (not the typical soft-story shear wall failure), and
one would think at least the first story plywood and tie downs would have
been in place prior to proceeding to the second and third floors. Perhaps
they were using a continuous cable/rod tie-down system that had not been
installed yet? In hurricane country you would have a hard time convincing
me to use gypsum board for shear on anything, much less multi-story (if
that is the case here). Doesn't take a lot of moisture to cause gypsum
board to fall apart...

Someone's insurance company is getting a bad phone call!

Andrew Kester, PE
Florida

On Mon, Jan 13, 2014 at 3:00 PM, nma <nma(--nospam--at)nma-se.com> wrote:

> It was also appears to be an open structure at this point of 
> construction. 
> neil
> 
> 
> On 1/13/2014 11:17 AM, Carl W. Jenne, P.E. wrote:
> 
>> Pretty soft first story, but they may have scheduled gyp board interior
>> shear walls.  Since the roof and most of the walls were still bare
>> sheathing, that probably wasn't installed yet.  Or if it was installed,
>> the heavy rain could have turned it into oatmeal.  Pretty frugal design,
>> but most likely means and (poor) methods?
>> 
>> Regards,
>> Carl W. Jenne, P.E.
>> Allan and Conrad, Inc.
>> Consulting Structural Engineers
>> Ring 407.628.5282 x 102
>> www.acstructural.com
>> 

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