Roof rigger mobile suspended user crane - photos

[Jon]

Roof rigger mobile suspended user crane. Never!






They have one for parapets too:




More: MIO Roof Rigger Overview

Previously:

Harnesses save workers after crane collapse - GIF
Mobile crane collapses while installing billboard, with possible dozer assist - GIF
1934 Aluminum Reduction Works coke pile gantry crane - photo
Offloading four 300-foot cranes from a ship onto a pier - video and photo
Roadside car-scrapping crane - GIF

[Toolmaker51]

Ugh, this means I shouldn't have?
Did all kinds of industrial piping repair, rented them working for backflow company. Agency provided counterweights based on heaviest guy, and heaviest pipe for the other. Weren't blue though, orange and white. Being assembled in place on rooftop or edge of a pit, no uncommon.
Didn't feel insecure at all, after first step over the edge. Short of mobile crane or helicopter and sufficient access, this is the only way to place motors, materials and labor safely.

[Frank S]

I've used them but not to go over the side of a building we used them to lift and lower elevator parts in the shaft. Really handy devices since they can be disassembled into components light enough to be carried by hand. Have a dozen labors carry the parts to the roof then attach an electric roofing materials hoist on it and you can raise up to 400 lbs. of materials at a time Just mount the wheels so it can roll back and forth instead of side to side. and you have the next best thing to having as crane on sight plus you are not out thousands of dollars per day rental for the crane and operator.
I remember 1 contractor on a 10 story office building that was going over budget decided to have the tower crane removed once the building was topped out and all of the floors were poured. He then leased 20 of those things had them placed on every floor to raise materials until the elevators were installed. in the end it proved to be a wise move as he managed to come in under budget and ahead of schedule. 2 of those machines used in tandem can lift close to a 1000 lbs maybe not as fast as a tower crane but as a sub contractor it was nice not to have to wait your turn.

[Drew1966]

I’ve spent a lot of time working out of a bosuns chair washing windows. I always used a very large water bladder as my anchor on the roof but I can see such a device as this being useful, and quite safe if set up correctly.

[Toolmaker51]

I’ve spent a lot of time working out of a bosuns chair washing windows. I always used a very large water bladder as my anchor on the roof but I can see such a device as this being useful, and quite safe if set up correctly.

Good plan, in case of a tiny little leak!

[tonyfoale]

The physics is sound but you would never get me going over the edge. One half of my brain would be saying "Go on you know it is OK" the other half would be screaming "Noooooooo wayyyyyyyyy".

[Toolmaker51]

The physics is sound but you would never get me going over the edge. One half of my brain would be saying "Go on you know it is OK" the other half would be screaming "Noooooooo wayyyyyyyyy".

Lol, coming from the guy cornering 150 k/ph on a couple square inches of tires. . .
All due respect Tony. Few of us been able to pursue an avocation in such a professional way.

[Frank S]

nothing makes the day go by better than a short nap after lunch. Many industrial accidents happen in factories right after lunch. Most of these are in corporations that do not allow enough downtime after eating. We were doing an install in once such factory after lunch my guys all pretty much took the rest of their lunch hour to have a nap. the Factory super came over and said here in this factory the lunch break is 30 minutes why aren't your people back at work, I said very simply they do not work for you they work for me and I say they have an hour if they want it. Because I find thy will have better awareness of safety and their moral is better. He went off in a huff and walked right into a low hanging beam knocking his hard hat off, he let out a few choice expletives picked up his hard hat and continued on. I thought to myself it was a good thing he had on his hard hat or he would have been victim to one of those industrial accidents I had explained about.

[Toolmaker51]

nothing makes the day go by better than a short nap after lunch. <snip>
Factory super went off in a huff and walked right into a low hanging beam knocking his hard hat off, he let out a few choice expletives picked up his hard hat and continued on. I thought to myself it was a good thing he had on his hard hat or he would have been victim to one of those industrial accidents I had explained about.

Rather important and fortunate, with hard hat on.
Even more so, how was the beam?

[Jon]

Another "never" from me: