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Section Modulus

Applicable units are those of quantitykind:SectionModulus

The Section Modulus is a geometric property for a given cross-section used in the design of beams or flexural members.

http://en.wikipedia.org/wiki/Section_modulus

http://www.iso.org/iso/catalogue_detail?csnumber=31889

$Z = \frac{I_a}{(r_Q)_{max}}$, where $I_a$ is the second axial moment of area and $(r_Q)_{max}$ is the maximum radial distance of any point in the surface considered from the $Q-axis$ with respect to which $I_a$ is defined.

The Section Modulus is a geometric property for a given cross-section used in the design of beams or flexural members.

Z