Ground support collapse in Jerusalem

[RoderickvG]

And then another ground support system collapses in Jerusalem:
http://www.ynetnews.com/articles/0,7340,L-4217831,00.html

This is worrying:
An initial investigation revealed that a cable connecting the lighting fixtures was torn apart and as a result, the fixtures collapsed and dragged a concrete cube that weighs a few tons.

Again poor anchorage may be the problem.
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Think it is too expensive to hire a professional, wait until you hire an amateur

[GL]

Hi wind and 4 x 50' legs


"Initially, eyewitnesses suggested that strong winds caused the lighting rig to collapse, but police said they were investigating possible negligence. They were also attempting to determine why rehearsals for the ceremony were taking place while the lighting rig was being erected. A cable connecting lighting fixtures was said to have torn, resulting in the collapse, initial investigations showed.

Eyewitnesses said they had seen the rig shake for minutes before it fell.

The lighting rig was constructed from metal scaffolding. Four columns, each approximately 15 meters (50 feet) in height, held up the lighting rig with multiple stage lights secured to the scaffolding. Apparently one of the four columns collapsed, causing the others to follow suit."

http://www.timesofisrael.com/1-dead-15-hurt-as-independence-day-lighting-rig-collapses-at-mount-herzl/



Looks to be a (unless it is just deceiving camera work) a rather lengthy grid for only four posts though... and of course the installers claim to have followed engineers' specs to the "T".




"Design Group, the company that erected the lighting fixtures said in response that it adhered to the instructions of engineers and supervisors and did not veer from safety instructions.

"The installation was not built today and has been erected for more than 10 days," the company said.

"It has been checked by safety engineers, passed two examinations and received the necessary permits. Design Group was responsible of following the instructions given by the engineers."

http://www.ynetnews.com/articles/0,7340,L-4217831,00.html
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"No matter what age we are, some have never quite left the schoolyard"