section-modulus
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section modulus
HB50
property of a cross section, calculated by dividing the ‘second moment of area’ (I) by the distance from the extreme fibre to the neutral axis (y)
See Figure A.57
See Figure A.57
Symbol: Z. Unit: millimetres to the third power (mm3).
For a symmetrical beam there is one section modulus: Z = I/y; but for an unsymmetrical beam there are two, one corresponding to each distance from the neutral axis.