Equivalent Round Section Dimension

How is the dimension for an equivalent round section calculated in the Timber Design add-on?

The formula to determine the initial section depth di (CSA) or the equivalent square section dimension aeq (NDS) used for the slenderness ratio calculation is as follows:

Equivalent Square Section Dimension

$$di = π·d24 (CSA O86)aeq = π·d24 (NDS)$$

 di Initial section depth d Diameter (section depth) aeq Equivalent square section dimension

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• Updated 21 September 2023

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