|
||
|
|
||
For a symmetrical RHS (Formcode 2) 
the Torsional constant It is overruled using the second formula of Bredt:
With A' the closed in area, taken as:
A' = (H - t) * (B - t)
With S the circumference of the closed in area, taken as:
S = 2 * [(H - t) + (B - t)]
Where B is the width of the cross-section, H the height and t the thickness.
The Warping constant Iw is overruled as follows:
The Shear areas Ay and Az are overruled as:
Ay = A * [ B / (B + H)]
Az = A * [H / (B + H)]