24 under care, a pair at least seem deceased.
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Indiana State Fair (Wind?) Rig Collapse
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24 under care, a pair at least seem deceased.
MikeHalloran
Mechanical
Not just wind. Notice the wet ground and wet people.
Mike Halloran
Pembroke Pines, FL, USA
Mike Halloran
Pembroke Pines, FL, USA
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msquared48
Structural
Wasn't there a thread here recently where someone was asking questions regarding stage rigging and trusswork?
Mike McCann
MMC Engineering
Mike McCann
MMC Engineering
msquared48
Structural
AAH, but the value of proofreading copy...
Obviously, from this report heading, the stage was not "staked" down. Hence the collapse. Such precise reporting...
Quote:
As Sugarland prepares to stake stage, massive stage collapses
Last Updated: Saturday, August 13, 2011
0ShareINDIANAPOLIS (AP) --
Authorities say they have confirmed at least three deaths after a stage collapsed during a storm at the Indiana State Fair, where the country group Sugarland was set to perform.
About two dozen people have been reported injured in the Saturday night iincident at the fairgrounds in Indianapolis.
Strong winds caused the stage rigging for the outdoor concert to collapse, trapping and injuring concert-goers shortly before 9 p.m.
Indiana State Police did not immediately return phone messages to The Associated Press. But the Indianapolis Star and WTHR are reporting that three people have died.
They initially were reporting that four had died, but later changed their reports to three dead based on information released by authorities.
Mike McCann
MMC Engineering
Obviously, from this report heading, the stage was not "staked" down. Hence the collapse. Such precise reporting...
Quote:
As Sugarland prepares to stake stage, massive stage collapses
Last Updated: Saturday, August 13, 2011
0ShareINDIANAPOLIS (AP) --
Authorities say they have confirmed at least three deaths after a stage collapsed during a storm at the Indiana State Fair, where the country group Sugarland was set to perform.
About two dozen people have been reported injured in the Saturday night iincident at the fairgrounds in Indianapolis.
Strong winds caused the stage rigging for the outdoor concert to collapse, trapping and injuring concert-goers shortly before 9 p.m.
Indiana State Police did not immediately return phone messages to The Associated Press. But the Indianapolis Star and WTHR are reporting that three people have died.
They initially were reporting that four had died, but later changed their reports to three dead based on information released by authorities.
Mike McCann
MMC Engineering
A similar collapse had just taken place in Ottawa, Ontario, Canada just a few weeks ago.
From what has been reported, they are saying a strong downburst was the cause of the Ottawa collapse, but I'm sure the official cause won't be released for a while.
From what has been reported, they are saying a strong downburst was the cause of the Ottawa collapse, but I'm sure the official cause won't be released for a while.
TehMightyEngineer
Structural
Better quality video:
EIT with BS in Civil/Structural engineering.
EIT with BS in Civil/Structural engineering.
JedClampett
Structural
I've looked at the news reports and still can't figure out, was this a temporary or permanent structure?
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According to "The engineering firms that design these stages incorporate ballast systems to keep the stage and rigging anchored, and some set strict guidelines for lowering the roof when winds exceed unsafe speeds".
MikeHalloran
Mechanical
How do you lower a roof
>while in a windstorm that threatens the roof<
without getting killed yourself?
Mike Halloran
Pembroke Pines, FL, USA
>while in a windstorm that threatens the roof<
without getting killed yourself?
Mike Halloran
Pembroke Pines, FL, USA
NITTANYRAY
Structural
One of the main problems was a slow response by the people in charge. A severe storm warning had been issued about 25 minutes before the collapse, but officials did not warn the crowd until a few minutes before the wind hit. People had started to leave but with a large crowd they did not have time to get to safety.
As I was searching the news about what happened at Indiana Fair State, I found the following article about a scissor lift that was collapsed by 51 mph winds in 2010. The problem seems to be how you train the people who are in charge of structures that are not designed to withstand strong winds :
msquared48
Structural
These winds were reportedly in the 60 mph range from what I heard.
Mike McCann
MMC Engineering
Mike McCann
MMC Engineering
For example(by no way connected to the discussed accident) the technical info sheet available from one maker's website : says
which seems to confirm what the Wall Street Journal article was saying.
which seems to confirm what the Wall Street Journal article was saying.
According to , "the Indiana Occupational Safety and Health Administration is investigating the contractor responsible for temporary structure, Greenfield-based Mid-America Sound Corp".
A short description of the structure is available at : where they say "Our roof systems are designed and built by James Thomas Engineering".
James Thomas Engineering's catalogue is available at which says
A short description of the structure is available at : where they say "Our roof systems are designed and built by James Thomas Engineering".
James Thomas Engineering's catalogue is available at which says
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