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Is there any restrictions on how a large boom crane is used. I.e. should the boom be going over an area where children are playing (outdoor) and a building housing an after school club. I don't think items are going over those areas but the boom definitely is.
When you say 'boom' crane do you mean a mobile crane rather than a tower crane? Whilst it's not necessarily good practice, if it's not happening during a lift and it's been suitably risk assessed then it's ok.
Fixed tower crane. Building a reasonable sized block of flats.
When I was there earlier the crane was lifting though the load was closer to the tower and not over the children. The boom however was.
I can try and find the number of the crane driver who delivered my hot tub over the garage after reversing the crane onto the drive. Will try to find the footage but could probably get stuff over your garage.
The boom being over a road, houses or kids etc is fine. If it did fail and fall, you wouldn't want to be nearby, but it could go in any number of directions. It probably about the same risk as an airplane going overhead, and is very hard to avoid in a crowded space.
However the load shouldn't be lifted over anything like that. There is the additional risk of the load or rigging from failing and falling. It's also very easy to follow that guidance, yet I see it a lot on the continent. One crane in Belgium used to have the site tool box swinging over the road overnight 🙄
Agreeing to the hot tub over your own garage is your own risk... But if you want a hot tub then you have a different attitude to risk than most people 😜
Thanks for the info the00. Guess I should stop worrying.
Thank Nick but no hot tub required!
Agreeing to the hot tub over your own garage is your own risk
I'm surprised WCA booked a crane for that. A trebuchet would be more his style.
Tower cranes are left in free swing when not in use to reduce wind load on the boom (restrictors can be used in certain circumstances).
Swinging over adjacent properties requires an oversail licence which is not usually difficult to obtain. Just takes time if complex ownership.
Lifting over other properties is more complex and best avoided. Not usually difficult to restrict lifting to own property if deliveries are within the site.
Given the number in use, risk is fairly low, although failure is catastrophic and spectacular. I wouldn't be concerned, and work with them frequently.
So all cranes and lifting tackle has to be inspected by an insurance company to deem it safe to used (LOLER). As others has said, not a problem to be under the boom but definitely not under the load itself (use my favourite health and safety say - never put your fingers were you wouldn’t put your d**k)