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A jackhammer (pneumatic drill or demolition hammer in British English) is a pneumatic or electro-mechanical tool that combines a hammer directly with a chisel. It was invented by William McReavy, who then sold the patent to Charles Brady King. [1] Hand-held jackhammers are generally powered by compressed air, but some are also powered by ...
A drilling hammer, [5] club hammer, lump hammer, crack hammer, mini-sledge or thor hammer is a small sledgehammer whose relatively light weight and short handle allow one-handed use. [6] It is useful for light demolition work, driving masonry nails, and for use with a steel chisel when cutting stone or metal. [ 7 ]
One safe and effective means to clean a roof is an electric agricultural sprayer system, as originally developed in Florida, USA in the early 1990s. [6] The equipment is used to apply a cleaning solution (typically containing bleach) that kills the algae, bacteria, mold, mildew, moss, fungus and other organic organisms growing on the roof.
A dead-blow hammer is a specialized mallet helpful in minimizing damage to the struck surface and in controlling striking force, with minimal rebound from the struck surface. The minimal rebound is helpful in avoiding accidental damage to precision work, especially in tight locations and in applications such as maintenance work on hydraulic ...
Deconstruction creates 6-8 jobs, for every job created by traditional demolition. [5] [6] In addition, solid waste from conventional demolition is diverted from landfills. This is a major benefit because construction and demolition waste accounts for approximately 20% - 40% of the solid waste stream.
The system was designed by Bosch in 1975 and stands for "Stecken – Drehen – Sichern" which is German for "Insert – Twist – Secure". Hammer drills almost always have a lever or switch that locks off the special "hammer clutch," turning the tool into a conventional drill for wood or metal work.
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