ClarkMarx | 5 months ago | on: Fred Dibnah shows how to erect a chimney scaffold at 200 feet (1982) [video]
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ClarkMarx | 5 months ago | on: Fred Dibnah shows how to erect a chimney scaffold at 200 feet (1982) [video]
All the stacks I worked on, save one I can remember, had beacon lights that needed regular maintenance and all had ladders built in. The ladders did not go all the way to the ground/roof level. That was to keep unauthorized folks from climbing it.
I remember two stacks had permanent catwalks around the top. One of them was quite corroded and not a comfortable place to walk. Like a sibling comment mentioned, that difficulty in maintaining them is a reason why many stacks don't have ladders. Some stacks that don't have them once did, but they were removed due to corrosion.
As far as access, all of the stacks I worked on had only one ladder. If the job was small and there was work that needed to be completed on the other side we had two options.
1. If the repair was low enough we could attach the ropes from which we hung our bosun's chair at the top and swing around to the other side.
2. If the repair was too high to do that or too involved we would build a scaffold all the way around the stack.
ClarkMarx | 5 months ago | on: Fred Dibnah shows how to erect a chimney scaffold at 200 feet (1982) [video]
This is interesting and not at all how we would rig a smokestack (as we call them). I worked for the company in the early 90s but we were using rigging that was built by the company in the 60s or earlier. In relation to how we did it his solution seems to me to be overly complicated and perhaps a bit more dicey than what we were doing.
I can write something up if anyone is interested in how we did it.
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ClarkMarx | 5 years ago | on: Ask HN: Who is hiring? (February 2021)
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https://www.purpleair.com/map?opt=1/i/mAQI/a10/cC0#11.37/40....
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So you could use your left foot to operate both brake pedals, either individually or together, and your right foot to operate the throttle.
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Now think of a steel right triangle with the legs being the vertical and horizontal aspect with the hypotenuse supporting the horizontal leg. The horizontal leg has a vertical tube welded where it meets the hypotenuse. The vertical leg as a hook curving down from the top away from the horizontal leg and a wooden pad at the bottom. We called these stackjacks but a Google search tells me that may have just been what we called them and not their actual name.
The hook hangs on the cable discussed above and the pad rests against the smokestack. 2 2"x12" (4cm x 29cm) walkboards are laid between these stackjacks. The vertical tube at the end accepts poles to which a railing is attached.
TLDR look at these photos of a company that does it exactly how we did. https://apexchimney.com/wp-content/uploads/2024/02/exteriori... https://apexchimney.com/wp-content/uploads/2024/02/IMGP40400...