Building Collapse In Geneva

 
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Old 01-23-2018, 08:41 PM   #1
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Building Collapse In Geneva


http://spectrumlocalnews.com/nys/roc...hip-lyons-road

About 10 miles from where we were working today, a cold front came through early afternoon with some crazy wind gusts, our siding was blowing all over the place for a little while.
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Old 01-23-2018, 08:46 PM   #2
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Re: Building Collapse In Geneva


http://www.fingerlakesdailynews.com/...ted-in-geneva/

Here's some better pictures, can't tell if they had all the walls sheeted or not. I'll probably find out more tomorrow, the GC we're framing for is a building inspector for a nearby town, he'll probably know more about it.

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Old 01-23-2018, 09:10 PM   #3
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Re: Building Collapse In Geneva


wow ! I'm glad no one was hurt. It didnt seem that windy there. ???
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Old 01-24-2018, 08:08 AM   #4
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Re: Building Collapse In Geneva


Quote:
Originally Posted by mrcat View Post
http://www.fingerlakesdailynews.com/...ted-in-geneva/

Here's some better pictures, can't tell if they had all the walls sheeted or not. I'll probably find out more tomorrow, the GC we're framing for is a building inspector for a nearby town, he'll probably know more about it.
That's what I was wondering, my guess would be that they weren't sheeted.
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Old 01-24-2018, 08:27 AM   #5
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Re: Building Collapse In Geneva


Matchbox structures... What you expect. Glad nobody got hurt.
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Old 01-24-2018, 09:25 AM   #6
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Re: Building Collapse In Geneva


When you get a building sheeted with some significant openings, a wind gust can blow in through the openings, and if it has nowhere to go, it can lift the roof system. On a simple rectangular building, once the top plate becomes detached (gable ends have the greatest shear force on the plate), those walls blow out, and the building blows over.

It's a big risk on some designs once walls are mostly sheeted.

Maybe what happened here.
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Old 01-24-2018, 10:44 AM   #7
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Re: Building Collapse In Geneva


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Originally Posted by hdavis View Post
When you get a building sheeted with some significant openings, a wind gust can blow in through the openings, and if it has nowhere to go, it can lift the roof system. On a simple rectangular building, once the top plate becomes detached (gable ends have the greatest shear force on the plate), those walls blow out, and the building blows over.

It's a big risk on some designs once walls are mostly sheeted.

Maybe what happened here.
I bet this is what happened, the gc we're working for now, said he drove by there a few days ago, and it looked like they had everything sheeted, but one whole side was full of overhead door openings.

Needless to say, he's really preaching bracing to us this morning. Which is just fine with me, I hope I never have one go down like that...

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Old 01-24-2018, 05:51 PM   #8
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Re: Building Collapse In Geneva


Bracing isn't always enough if the roof lifts.
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Old 01-24-2018, 06:39 PM   #9
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Re: Building Collapse In Geneva


Tarp the openings, or leave some sheathing off for wind flow.... Hinged plywood Flaps for the over achievers.
Maybe some Tornado ties......

OSHA says over 28 mph winds get down out of man lifts without Pro opinion to the contrary.

35 mph for old school pipe scaffold.....tied off to regulations.

Some insurance company just took a loss.... and our rates rise some more...

Blown over by a 45 or 50 mph gust is just gross incompetence, and appears to be a little undermanned, 2 men for 10,000 square feet ?
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Old 01-24-2018, 07:17 PM   #10
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Re: Building Collapse In Geneva


This isn't gross incompetence.
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Old 01-24-2018, 07:48 PM   #11
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Re: Building Collapse In Geneva


I have a suspicion they bracing was not sufficient.
Framed several that size and used cubes of 16'ers for bracing until the windows were in.
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Old 01-24-2018, 08:15 PM   #12
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Re: Building Collapse In Geneva


Quote:
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Blown over by a 45 or 50 mph gust is just gross incompetence, and appears to be a little undermanned, 2 men for 10,000 square feet ?
There were 5 workers on site, just the 2 that were injured.
The owner of the company was one of the injured, apparently he's in guarded condition as of this morning.



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Old 01-24-2018, 08:31 PM   #13
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Re: Building Collapse In Geneva


On Facebook, a "Spencer Tulis", photographer for Finger Lakes Times, has a couple more pictures on his personal page.
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Old 01-24-2018, 08:40 PM   #14
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Re: Building Collapse In Geneva


Quote:
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This isn't gross incompetence.
I don't think it is either, it's not a fly by night company, I think they've been around for 30 some years.
I'll be interested to hear what they determine failed.

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Old 01-24-2018, 08:59 PM   #15
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Re: Building Collapse In Geneva


We had a school(?) under construction collapse at that stage of construction under similar circumstances. I don't think you see this happen in hurricane country due to the required ties.
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Old 01-25-2018, 10:08 PM   #16
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Re: Building Collapse In Geneva


Engineering wise, one usually figures that the partial building during construction should survive the greatest average wind in a 6 month period.... usually in the 70-85 mph range here in the MidWest, Longer jobs get a 5 or 10 mph added to temporary design wind loads... high value and high priority jobs might get special attention....

A failure at ~45mph is not going to please any underwriters.

WAG: the roof formed an air foil and achieved "take off velocity..."

No one can build profitably and eliminate all weather risks... This one I guess is on the Engineers or lack there of.... The wind gusts were un-usual, but not freakish....

One small benefit of the Wind Mill silliness is there is much better REAL TIME wind data across the USA....

And the InterNet weather had wind gust warnings..... Up to 70 Mph?
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Last edited by Fouthgeneration; 01-25-2018 at 10:20 PM.
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Old 01-26-2018, 12:27 AM   #17
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Re: Building Collapse In Geneva


This probably isn't just simple uplift.

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