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Shotcrete, gunite (/ ˈ ɡ ʌ n aɪ t /), or sprayed concrete is concrete or mortar conveyed through a hose and pneumatically projected at high velocity onto a surface. This construction technique was invented by Carl Akeley and first used in 1907. [1]: 7 The concrete is typically reinforced by conventional steel rods, steel mesh, or fibers.
Sticky foam is a type of less-lethal weapon, consisting of various extremely tacky and/or tenacious materials carried in compressed form with a propellant and used to block, entangle, and impair individuals. A National Institute of Justice-funded project at Sandia National Laboratory developed a "gun" which could fire multiple shots of sticky foam.
The anchor selection, together with additional reinforcement, and rigging arrangements is influenced by: - The dead weight of the element - The number of anchors in the element and the configuration of the anchor - Capacity of the anchor at the specific concrete compressive strengths at time of lift - The dynamic loads applied during lifting ...
The slab lifter uses two safety devices. Safety chains and a support bracket allow safe lifting of large slabs. This lifting appliance also has a safety locking device that is engaged when the gripping pads are activated by the weight of the stone. This prevents any jerking movement from releasing the stone.
A US Patent was issued in 2001, [3] and the technology has since been licensed by other manufacturers of cleaning equipment. A number of manufacturers in the cleaning industry now produce and market spray-and-vac systems or systems that are similar, and approximately 40,000–50,000 units have been sold worldwide.
Applied using eductor or compressed air foam system (CAFS) and pumped through fire hose to a foam nozzle (or sometimes a less-effective fog nozzle). Attack hose (Attack line) A use classification of a fire fighting hose connected to output of a pump or other pressure source (e.g., gravity). Fire hose used to apply water or other fire fighting ...
In civil engineering, concrete leveling is a procedure that attempts to correct an uneven concrete surface by altering the foundation that the surface sits upon. It is a cheaper alternative to having replacement concrete poured and is commonly performed at small businesses and private homes as well as at factories, warehouses, airports and on roads, highways and other infrastructure.
A cleaning rod is a firearm maintenance tool that can be used to clean the inside (bore) of a gun's barrel, and is made in different sizes for use on different barrel lengths, calibers and gauges. It is a sturdy, long, thin, straight rod typically made of metal, rigid plastic or carbon fiber , and usually has a handle at one end for gripping ...