Balcony Collapse in San Francisco
Balcony Collapse in San Francisco
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Balcony Collapse in San Francisco
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RE: Balcony Collapse in San Francisco
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RE: Balcony Collapse in San Francisco
I these are the building
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
http://www.bbc.com/news/world-europe-33150308
RE: Balcony Collapse in San Francisco
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RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
So the balcony rails let go of the building and the floor started to deflect as a cantilevered beam is prone to do. This would throw the students away from the building making the loading even worse. The balcony bent so far that it managed to flip coming to rest on the balcony below it and dumped the students over the edge some to the lower balcony and others four stories to the street below.
RE: Balcony Collapse in San Francisco
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RE: Balcony Collapse in San Francisco
Mike McCann, PE, SE (WA)
RE: Balcony Collapse in San Francisco
Mike McCann, PE, SE (WA)
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
http://www.latimes.com/local/lanow/la-me-berkeley-...
Seems it was a wholly timber frame with some cladding to make it look like concrete.
I've never liked balconies....
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RE: Balcony Collapse in San Francisco
Here's a few quotes from the article:
"The changes make new balconies and other sealed areas exposed to weather subject to stricter requirements on materials, inspection and ventilation.
In addition, the regulations require regular maintenance inspections for all such spaces for future buildings as well as those units already built.
The new inspection policy requires all existing buildings be inspected within six months.
The new rules state that projections exposed to weather—balconies, landings, decks, stairs and floors—shall be constructed of naturally durable wood, preservative-treated wood, corrosion-resistant steel or similar approved materials.
Other changes to local building codes involve laminated timbers and supporting members of permanent fixtures.
Glued laminated timbers that form structural supports on a building and are exposed to weather now will have to be pressure-treated with a preservative or be manufactured from naturally durable or preservative-treated wood.
And wood members that form the structural supports of buildings, balconies, porches or similar permanent building appurtenances that are exposed to the weather must be made with naturally durable or preservative-treated wood.
The new regulations also stipulate that weather-exposed enclosed assemblies "shall have cross ventilation for each separate enclosed space by ventilation openings protected against the entrance of rain and snow."
Matthai K. Chakko, spokesperson for city of Berkeley, says the new ordinances set up an inspection system where balconies will be inspected every three years by certified and qualified individuals,
such as a general contractor, structural pest control specialist, architect or engineer.
"And that's a pretty thorough inspection, because that inspector has to sign an affidavit attesting to the fact that these external and elevated wood and
metal decks, balconies, landings, stairway systems and other elements are free from deterioration, decay, improper alteration, hazardous dry rot and fungus," he says,
adding that the rules will affect about 6,000 different buildings around the city.
Here's the link: http://enr.construction.com/business_management/sa...
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RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco
RE: Balcony Collapse in San Francisco