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In transportation, heavy lift refers to the handling and installation of heavy items which are indivisible, and of weights generally accepted to be over 100 tons and of widths/heights of more than 100 meters. These oversized items are transported from one place to another (sometimes across country borders), then lifted or installed into place.
The NIOSH lifting equation is a tool (now application) that can be used by health and safety professionals to assess employees who are exposed to manual lifting or handling of materials. [7] The NIOSH lifting equation is a mathematical calculation which calculates the Recommended Weight Limit (RWL) using a series of tables, variables, and ...
Examples include lifting on a Swiss ball, using dumbbells instead of a barbell, or lifting with the legs on the bench or in the air. Alternating arms: This involves using a pair of dumbbells and lifting and lowering one and then lifting and lowering the other; or lifting one while lowering the other in an alternating sequence. [11]
This mechanism is used in devices such as lift tables and scissor lifts.Modern low-profile computer keyboards make an extensive use of it as well, installing each key on a scissor support to ensure their smooth vertical movement, allowing the use of a cheap and reliable rubber dome contact set, instead of expensive and complex array of mechanical switches.
Lifting equipment, also known as lifting gear, is a general term for any equipment that can be used to lift and lower loads. [1] Types of lifting equipment include heavy machinery such as the patient lift , overhead cranes , forklifts , jacks , building cradles, and passenger lifts, and can also include smaller accessories such as chains ...
Lift, a morphism in mathematics; Lifting theory, a notion in measure theory; Lifting scheme (wavelets) Lambda lifting, meta-process that defines functions independently of each other in a global scope; Taking an inference rule in propositional logic and adapting it for predicate logic; Type lifting, adding the special null value to the scope of ...
All manufacturers of lifting equipment are obliged to send out instructions for use of all products. The employer is then obliged to make sure employees are aware of these instructions and use the lifting equipment correctly. To achieve this the employees must be competent. Competence is achieved through experience, technical knowledge and ...
Lift is proportional to the density of the air and approximately proportional to the square of the flow speed. Lift also depends on the size of the wing, being generally proportional to the wing's area projected in the lift direction. In calculations it is convenient to quantify lift in terms of a lift coefficient based on these factors.