Behavior of Hollow Thin Welded Tubes Filled with Sand Slag Concrete

Table 7

Load of composite columns according to Vrcelj method.

Concrete type	Specimen	Stubs height (mm)	Nu (Vrcelj) (kN)	Nu (Vrcelj)/Nue
BO	PA1-1	300	343.33	1.01
	PB1-2	300	318.41	0.99
	PA1-3	500	328.22	0.99
	PB1-4	500	298.43	0.94
BSI	PA2-1	300	367.03	0.95
	PB2-2	300	353.82	0.98
	PB2-3	300	352.64	0.97
	PA2-4	500	354.56	0.96
	PB2-5	500	344.75	0.97
	PB2-6	500	345.62	0.96
BSII	PA3-1	300	354.14	0.94
	PB3-2	300	319.86	0.91
	PB3-3	300	332.78	0.95
	PA3-4	500	354.23	0.97
	PB3-5	500	321.10	0.93
	PB3-6	500	314.64	0.92