|
||
|
|
||
For a CHS (Formcode 3 or geometric 'Tube') 
the Area A is overruled as:
The Moments of inertia Iy and Iz are overruled as:
The Section moduli Wely and Welz are overruled as:
The Plastic section moduli Wply and Wplz are overruled as:
The Torsional constant It is overruled using the second formula of Bredt:
With A' the closed in area, taken as:
With S the circumference of the closed in area, taken as:
With Dc the centerline dimension, taken as:
Dc = D - t
With Di the inner diameter taken as:
Di = D - (2 * t)
Where D is the diameter of the cross-section and t the thickness.
The Shear areas Ay and Az are overruled as:
