Page 36 - Civil Engineering Formulas
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Radius of gyration BH 3 + bh 3 12 (BH + bh) BH 3 – bh 3 12 (BH – bh)
Section modulus BH 3 + bh 3 = I 12 BH 3 + bh 3 I = c 6H BH 3 – bh 3 = I 12 I BH 3 – bh 3 = c 6H
B 2
b B 2 h H c
Moment of inertia H h b h B
B b b 2 H
B
H
b 2 h
H
Section B b 2 b B
c
b 2 h h H
14
