Plastic Section Modulus of a Thin Wall Circle formula |
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\( Z \;=\; \pi \cdot r^2 \cdot t \) (Plastic Section Modulus of a Thin Walled Circle) \( r \;=\; \sqrt{ \dfrac{ Z }{ \pi \cdot t } } \) \( t \;=\; \dfrac{ Z }{ \pi \cdot r^2 }\) |
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| Symbol | English | Metric |
| \( Z \) = plastic section modulus | \( in^3 \) | \(mm^3 \) |
| \( \pi \) = Pi | \(3.141 592 653 ...\) | \(3.141 592 653 ...\) |
| \( r \) = inside radius | \( in \) | \( mm \) |
| \( t \) = thickness | \( in \) | \( mm \) |
