Supported shapes of compound section

Pattern	Shape	Parameters [mm]
	Double I section	a
	Double Channel FtF (face to face position)	a
	Double Channel BtB (back to back position)	a
	Starred Angle (diagonal position)	a
	Double Angle BtB (back to back position)	a
	Double Angle FtF (face to face position)	a
	Double Angle BtB LL (long leg - back to back position)	a
	Double Angle FtF LL (long leg - face to face position)	a
	Four Angle BtB (back to back position)	a; b
	Four Angle FtF (face to face position)	a; b
	Four Angle I	a; b
	Double pipe	a