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Huber's equation, first derived by a Polish engineer Tytus Maksymilian Huber, is a basic formula in elastic material tension calculations, an equivalent of the equation of state, but applying to solids. In most simple expression and commonly in use it looks like this:

 \sigma_{red}=\sqrt{({\sigma}^2) + 3({\tau}^2)}

where σ is the tensile stress, and τ is the shear stress, measured in newtons per square meter (N/m², also called pascals, Pa), while σred - called a reduced tension, is the resultant tension of the material.

Very useful in calculating the span width of the bridges like Golden Gate Bridge or Verrazano-Narrows Bridge, their beam cross-sections, etc.

See also


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