Free 173 Best Homemade Tools eBook:  
Become a founding member: 500+ tool plans, full site access, and more.

User Tag List

Page 1 of 2 1 2 LastLast
Results 1 to 10 of 17

Thread: Crane collapses due to bad rigging - GIF

  1. #1

  2. The Following 5 Users Say Thank You to Altair For This Useful Post:

    baja (07-11-2020), dubbby (07-09-2020), NortonDommi (07-10-2020), Scotty12 (07-11-2020), Tonyg (07-10-2020)

  3. #2
    Supporting Member IntheGroove's Avatar
    Join Date
    May 2019
    Location
    Lake Tahoe
    Posts
    565
    Thanks
    41
    Thanked 216 Times in 139 Posts

    IntheGroove's Tools
    Rigging fail chain reaction...

  4. #3

    Join Date
    Jul 2016
    Posts
    44
    Thanks
    105
    Thanked 4 Times in 3 Posts
    Why do we never see the end of these videos?

  5. #4

    Join Date
    Mar 2019
    Location
    Adelaide, Australia
    Posts
    33
    Thanks
    32
    Thanked 9 Times in 7 Posts
    Cos the videographer believes in self preservation.

  6. The Following User Says Thank You to WorkerB For This Useful Post:

    NortonDommi (07-10-2020)

  7. #5
    Supporting Member Toolmaker51's Avatar
    Join Date
    Feb 2016
    Location
    Midwest USA
    Posts
    2,763
    Thanks
    4,656
    Thanked 1,973 Times in 1,208 Posts

    Toolmaker51's Tools
    Fail #1 , engineer of panel correctly sizing/ locating hardware to volume and dimension of concrete.
    Fail #2 How do these "riggers" and "crane operators" make such a lift without seeing ALL the weight go to bear on the upper shackles and cable? There was plenty of time to clear out, or stop and lower.

    PS. Seems clear shackle or cable seizing on upper right gave way first. Did that wave of energy flip lift cable off it's sheave, did the boom collapse, or hook then fail? At 15'' you see the spreader or boom tip hit the ground! Epic, catastrophic component failures.
    And parts of crew don't even clear out as far possible. InTheGroove's "chain reaction" a perfect assessment.
    Last edited by Toolmaker51; 07-10-2020 at 09:29 AM.
    Sincerely,
    Toolmaker51
    ...we'll learn more by wandering than searching...

  8. The Following User Says Thank You to Toolmaker51 For This Useful Post:

    NortonDommi (07-10-2020)

  9. #6
    Supporting Member NortonDommi's Avatar
    Join Date
    Jul 2014
    Location
    North Island, New Zealand.
    Posts
    322
    Thanks
    807
    Thanked 161 Times in 108 Posts
    This was in the news this morning: https://home.nzcity.co.nz/news/article.aspx?id=314830
    I keep well clear of the drop zone around lifts - best laid plans of mice and men and all that.

    There are preventable 'accidents', mother nature and acts of the Gods.

  10. #7
    Supporting Member NeiljohnUK's Avatar
    Join Date
    Dec 2017
    Posts
    188
    Thanks
    14
    Thanked 80 Times in 55 Posts

    NeiljohnUK's Tools
    I write LOLER lifting plans for similarly off-centre/angled loads, that the anchor point tore out/sheared should have been allowed for as a potential failure as such side-loading is well known to cause such failures. Too many people too close is bad site management control, the pendulum effect was entirely predictable even if everything had stayed connected, I'd even bet the crane loading calc's didn't allow for the weight of the spreader beam or the 2 chain brothers.
    Last edited by NeiljohnUK; 07-10-2020 at 07:33 AM.

  11. #8
    Supporting Member mlochala's Avatar
    Join Date
    Nov 2012
    Posts
    157
    Thanks
    12
    Thanked 56 Times in 32 Posts

    mlochala's Tools

  12. #9
    Supporting Member Tonyg's Avatar
    Join Date
    Apr 2016
    Location
    Centurion, South Africa
    Posts
    122
    Thanks
    1,106
    Thanked 41 Times in 37 Posts
    It always amazes me how people stand (or are allowed to) in dangerous places when equipment is being lifted. I do engineering consultancy in a lot of large steel plant and often see their employees walking under plates that are being lifted - not sure what they think their hard hat could contain, apart from a crumpled body. It is the old adage that familiarity breeds contempt.
    I have also witnessed some nasty accidents at sites and a few deaths - all were unnecessary.

  13. #10
    Supporting Member VinnieL's Avatar
    Join Date
    Feb 2018
    Posts
    281
    Thanks
    30
    Thanked 111 Times in 85 Posts
    When I was a cop, I never stood around a towtruck winching a car or lifting a vehicle.
    The steel cables on a tow truck under that kind of tension if they break, can turn into a deadly whip that could take someone's head right off.
    We've all seen nylon tow ropes and steel chains break and go right through the back window of a truck cab.

  14. The Following User Says Thank You to VinnieL For This Useful Post:

    Tonyg (07-12-2020)

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •