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13.07.2015
Tower crane flexibility
Take a look at this video of a tower crane slewing through 360 degrees, it seems to have a little more flexibility than usual. You certainly would need to have your ‘sea legs’ to operate it.
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Gideon
The operator gets some feedback on what's happening to the crane, makes them be a bit more gentle and cautious with the movements.
Steel has an ultimate tensile strength that is around double the yield strength, so most steel structures are limited by how much they'll flex rather than when they'll fail.
I've seen many tower cranes that do seem to move a little more that maybe looks safe... but the old adage is if it doesn't flex it would snap.
The play on the top tower sections of this crane made me stomach churn - I dread to think how it felt in the cab, yet clearly, this is an established crane on this job site with a tie into the building - at what point would an experienced driver walk away from a machine that had so much 'play' in it ?
Gideon
The operator gets some feedback on what's happening to the crane, makes them be a bit more gentle and cautious with the movements.
Steel has an ultimate tensile strength that is around double the yield strength, so most steel structures are limited by how much they'll flex rather than when they'll fail.
Dave Hodson
wheres the video???????????
I've seen many tower cranes that do seem to move a little more that maybe looks safe... but the old adage is if it doesn't flex it would snap.
The play on the top tower sections of this crane made me stomach churn - I dread to think how it felt in the cab, yet clearly, this is an established crane on this job site with a tie into the building - at what point would an experienced driver walk away from a machine that had so much 'play' in it ?