main reinforcement bars

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• Reinforced concrete — is concrete in which reinforcement bars ( rebars ), reinforcement grids, plates or fibers have been incorporated to strengthen the concrete in tension. It was invented by French gardener Joseph Monier in 1849 and patented in 1867.[1] The term… …   Wikipedia

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• Concrete cover — Concrete cover, in reinforced concrete, is the least distance between the surface of embedded reinforcement and the outer surface of the concrete (ACI 130). The concrete cover depth can be measured with a cover meter. Contents 1 Purpose of… …   Wikipedia

• Prestressed concrete — diagram Prestressed concrete is a method for overcoming concrete s natural weakness in tension. It can be used to produce beams, floors or bridges with a longer span than is practical with ordinary reinforced concrete. Prestressing tendons… …   Wikipedia

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• Collapse of the World Trade Center — Coordinates: 40°42′41.12″N 74°00′44.00″W /  …   Wikipedia

• Vizag Steel — Infobox Company company name = విశాఖ ఉక్కు కర్మాగారం company type = Public Sector company company slogan = Pride of Steel company vision = Infrastructuring India foundation = 1971 | industry = Steel location = key people = , CMD products = Plain… …   Wikipedia

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