Posted by Bob on January 02, 2016 at 21:03:38 from (64.255.159.192):
In Reply to: Lowering a roof posted by notjustair on January 02, 2016 at 19:18:18:
Set up some scaffolding or cribbing at the new desired roof height, then blow snow under it all winter 'til the pile will support the roof, then cut the poles off.
As the snow melts in the spring, it will gently lower the roof.
JUST think'in outside the box, here, but based on a tale in "POWER magazine" from any years ago by "Marmaduke Surfaceblow".
Every month there was a submitted story about how an operating engineer (or whatever) solved a tough problem somewhere in the world in the power generation industry. Steve Elonka wrote the column for many years.
In the case in point, a large steam engine was being assembled somewhere on the northern tundra, with GIANT flywheels and a crankshaft that needed to be lowered in place on the engine base, with big "pockets" in the floor to accommodate about 1/3 of the diameter of the flywheels.
No crane was available and getting the engine assembled and in operation ASAP was imperative.
The engine mfg. sent "Marmaduke" up there, probably by dogsled, and he solved the problem... had them cut blocks of ice and fill the recesses in the floor, then they rolled the crankshaft and flywheels into place, and as the ice melted the assemble was slowly lowered into the main bearings!
I can't immediately find a link to that very story, but the link below tells you what "he" was all about.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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