Heavy lift ring crane - video

**ranald** · Oct 18, 2018, 10:37 PM

NOT GOOD! We had a local one a day or so ago & the crane fell on a house but no one was injured except the operators ego. It was just lifting a spa over the house and wind or poor experience /wet ground caused the accident.

**Frank S** · Oct 18, 2018, 10:51 PM

Originally Posted by ranald

NOT GOOD! We had a local one a day or so ago & the crane fell on a house but no one was injured except the operators ego. It was just lifting a spa over the house and wind or poor experience /wet ground caused the accident.

A lot of times a contractor underestimates the size of the crane required to make a lift over a building structure. Often the weight of the object is greater than the stated weight due to additional items being pre installed.
Even seemingly innocuous amounts of weight of small items when compiled as a whole can exponentially increase the weight at the boom tip
Most crane companies I used to use would send their rep. out prior to sending the crane and when ever possible we did an onsite evaluation as circumstances can change quickly on a construction site sub contractors place their materials in the way or do not adhere to the project planning flow and time charts.
There had been times when a 75 ton crane had to be used where a 25 or 30 ton crane had been planned because of a mere ten foot relocation of where the crane was going to have to be placed

**ranald** · Oct 20, 2018, 08:30 PM

Originally Posted by Frank S

A lot of times a contractor underestimates the size of the crane required to make a lift over a building structure. Often the weight of the object is greater than the stated weight due to additional items being pre installed.
Even seemingly innocuous amounts of weight of small items when compiled as a whole can exponentially increase the weight at the boom tip
Most crane companies I used to use would send their rep. out prior to sending the crane and when ever possible we did an onsite evaluation as circumstances can change quickly on a construction site sub contractors place their materials in the way or do not adhere to the project planning flow and time charts.
There had been times when a 75 ton crane had to be used where a 25 or 30 ton crane had been planned because of a mere ten foot relocation of where the crane was going to have to be placed

We ordered a small 9.5 by 4.5 metre fibreglass pool 16 years ago & the salesman told all kinds of rubbish including the ability to lift over the roof. As an excavator driver myself ,I questioned the size of the crane. "We have the right one". "if you don't I'm not paying for it or for travelling time for a different one" & made him sign that on contract. When delivery they had to get another one that could go around the house down a 7 degree slope and back up the paddock to place in situ. I had my 2 y,o, daughter in hospital for surgery that day and missed the chaos. they billed me fr it & threatened legal action when i referred to the hand written & signed notes on the contract. Ha HA had the last laugh. The sales guy lost his job.