huangyhg

vancouver stadium
vancouver 鈥?a combination of natural causes and human error led to the roof collapsing at b.c. place stadium, general manager howard crosley said friday.
he said a preliminary report showed weakened fabric, a rapid pressurization of the roof and heavy wind conditions caused the structure to tear.
a b.c. place employee quickly increased the pressure on the roof last friday after staff noticed it was slightly inverted during a heavy wind and sleet storm.
at the same time, another person turned on an additional eight fans to keep the air-supported roof inflated.
"the staff reacted as they're trained to do," mr. crosley said. "which is, when they noticed a depressurization in the facility, to apply pressure. the mistake that was made was that two people were operating the controls at the same time."
engineer kris hamilton, who is conducting a report of the incident, said there was three times more pressure on the roof than there was supposed to be.
from the toronto globe and mail...
a few links...

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