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The wires in straight wire ropes under tensile load are mainly strained by tensile stresses. The real tensile stress in the wires will not be considered in most cases. Instead of this the stress condition will be normally characterised globally by the rope tensile stress (nominal tensile stress).

The global tensile stress in wire ropes is the so called rope tensile stress σ Z as a quotient between the tensile force S and the nominal metallic cross-section A of the rope.