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Air supplyAir systems on a light-rescue truck should be given careful consideration due to the substantial weight of most of the components. Air system storage choices should be matched to the output of the stationary air compressor. DOT cylinders with 4,500 or 6,000psi ratings weigh 144 pounds or 188 pounds each while ASME cylinders with 5,000 or 6,000psi ratings that weigh 400 pounds each.The DOT cylinders need easy access for removal, as they will need to be removed every five years for hydro testing. The ASME cylinders never need hydro testing, so they can be located in areas where future access may not be of a concern. However, they cost more than DOT cylinders.

In Europe these tools are known as Tirfor hand winches. In the US they are branded Griphoists. They are also sometimes sold as scaffold hoists. This diversity indicates their astounding versatility for moving heavy things by hand. They do the work of motorized winches--haul logs, or move stuck tractors, raise towers, and so on--but with the deftness of a human hand. Because there is no ratchet or coil, a Griphoist permits very small adjustments, unlike either come-alongs or winches. The patented double-grip mechanism of the Griphoist/Tirfor is considered so reliable that some versions of the unit are rated by the UL to be suitable for hoisting humans--for instance in hoisting window-washers'' scaffolding.

Haslob has no hard feelings, he told the Register: "I don''t think he meant to do it." But Dupont was fired after the incident, and police have reportedly charged him with reckless endangerment. With the right equipment, you can work like a pro, and make lots of noise, dust and progress.Last week I noticed my neighbor breaking up his sidewalk with a sledgehammer. I strolled over to see how it was going. He had only been at it for an hour but was already sore, exhausted and thinking about hiring a pro to finish the job with a jackhammer. "You don''t need a pro," I told him. "All you need is a jackhammer."