Glass Gone Wild....

[tbz]

Loved to know if any of our Texas members, know if they have a clue to the cause?

http://www.wfaa.com/news/texas-news/Austin-hotel-closing-after-glass-keeps-falling-124683409.html

Seems to me that the tempered glass is expanding under the high heat and pushing on the metal bolts/pins going through the glass holes holding the panels in place.

I am just wondering why they didn't use Dupont's Sentry laminated tempered glass, at least when the panels broke the glass would have stayed on the building.

 

[mark handler]

Not uncommon

In 1973

10,344 window panes were replaced on the the Han*ockTower because they "popped" out

By the way, the "powers that be" won't let me type the "c" in Han*ockTower

February 17, 2011

(CHICAGO) -- The intersection of Madison and Dearborn streets was closed temporarily Thursday by broken glass falling from a building.

December, 2000

CNA Financial Services has agreed to pay $487,500 to settle a lawsuit filed by the city of Chicago after a woman was killed by a shard of glass that fell from the insurance company's downtown skyscraper.

 

[Architect1281]

Mark I used to be able to sit in physics class at Wentworth and watch the mirrored glass panels turn into black rectangles on the Hanc..k tower

that was due to wind and inadequated anchorage . Wind would deflect glass inward when wind stopped glass would return to original position and just keep on going

sailing to the ground like a big glass kite sometimes in pieces somtimes pieces on impact.

The glazing property that would shatter tempered glass is related to it having a linear stress strain line direct to failure withou a yield elastic or plastic point .

tempered glass is heat treated to crumble on impact rather than shatter in shards so its fracture point is reduced even furthur.

I would conjecture that the installation is far to rigid lacking adequate bushings or flexure to accomodate for even minimal glass movement

Or it was imported from china,

Also betting that the higher floors ahve much more lateral displacement that the glazing properties cannot acomodate

 

[ICE]

This building started raining glass on June 10 and they didn't get around to blocking the sidewalk until today. Apparently it took two days of glass rain in a row before they acted.

 

[tbz]

Not uncommon In 1973

10,344 window panes were replaced on the the Han*ockTower because they "popped" out

By the way, the "powers that be" won't let me type the "c" in Han*ockTower

February 17, 2011

(CHICAGO) -- The intersection of Madison and Dearborn streets was closed temporarily Thursday by broken glass falling from a building.

December, 2000

CNA Financial Services has agreed to pay $487,500 to settle a lawsuit filed by the city of Chicago after a woman was killed by a shard of glass that fell from the insurance company's downtown skyscraper.

Mark,

As a railing manufacture myself, I have always been amazed with buildings like this that hang glass from 4 holes like on the "W".

With that said, what has my attention is, what are they doing to correct the issue, you know cause and effect, what type of glass are they going to use this time, the same tempered glass with modified mountings and bushings, are they moving to a much higher level of safety glass like DuPont's Sentryglas© and were are they going to get that much glass made correctly in the short amount of timeline they noted.

I wont even mention who is going to foot the bill for the fix, because first they need to fix it and then they will release the hounds.

Tom

 

[jar546]

By the way, the "powers that be" won't let me type the "c" in Han*ockTower

Sorry about that Mark. I adjusted the settings and you can now use all the cock you need to.:devil

 

[mark handler]

Sorry about that Mark. I adjusted the settings and you can now use all the cock you need to.:devil

No worries, I just didn't want others to think I was censoring my own post, or could not spell

I am a believer in Lenny Bruces philosophy, If you use a word enough, it looses the negative meaning.

He was referring to the N word, but it applies to all words….

 

[peach]

glass falling is either a) bad connections or b) - usually high rise.. the engineer/architect didn't consider wind forces/resonsence forces.. it's the DP responsibility, not the inspector's