second-moment-of-area
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second moment of area
Also called: moment of inertia
HB50
geometrical property of a structural section, equal to the sum of the products of all the elementary areas times their distances squared from a line in the plane of section, expressed in millimetres to the fourth power (mm4)
Symbol: I.
When no line is specified, the moment is usually taken about an axis through the centroid, and this is the I used in the bending formula.