Table 2.

Mechanical properties of reinforcement and steel plates.

Group	Type	Location	fy (MPa)	fu (MPa)	ρ (%)	Es (MPa)
P	6 mm steel plate	Vertical and horizontal stiffening ribs, lattice partition steel plate	416	528	27.5	2.10 × 105
	10 mm steel plate	Solid partition steel plate	409	498	27.6	2.12 × 105
	12 mm steel plate	External steel tube	373	525	27.4	2.06 × 105
	ø6 reinforcement	Longitudinal reinforcement	382	582	31.3	2.07 × 105
	ø10 reinforcement	Longitudinal reinforcement	310	473	36.7	2.05 × 105
H	5 mm steel plate	Steel tube	296	428	28.9	2.06 × 105
	ø8 reinforcement	Longitudinal reinforcement	334	445	24.5	2.05 × 105
	ø10 reinforcement	Longitudinal reinforcement	363	446	26.3	2.07 × 105
	ø12 reinforcement	Longitudinal reinforcement	326	423	27.1	2.04 × 105

Note: f_y is the tested yield strength; f_u is tested ultimate strength; ρ is the tested tensile elongation; E_s is the tested elastic modulus of steel.