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Updated by J F on Mar 29, 2016
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J F J F
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Extra Heavy Duty Office Chairs

Office Chairs - IKEA
Check out our range of sturdy and durable office chairs at great value prices. We have everything from basic to fully adjustable chairs to choose from.
Office chair - Wikipedia, the free encyclopedia
An office chair, or desk chair, is a type of chair that is designed for use at a desk in an office. It is usually adjustable and has a set of wheels. Office chairs were developed around the mid-19th century as more workers spent their shifts sitting at a desk, leading to the adoption of several features not found on other chairs.
heavy-duty
Definition of heavy-duty in the Online Dictionary. Meaning of heavy-duty. Pronunciation of heavy-duty. Translations of heavy-duty. heavy-duty synonyms, heavy-duty antonyms. Information about heavy-duty in the free online English dictionary and encyclopedia.
Strength of materials
Mechanics of materials, also called strength of materials, is a subject which deals with the behavior of objects withstanding stresses and strains. This theory was established on the basis of mathematical modeling in first and second principal stress, specifically because types of stress state in construction parts such beam and shell are possible to approximate as one or two dimensional one.