Experimental Study on Progressive Collapse Performance of Frame with Specially Shaped Columns Subjected to Middle Column Removal

Table 1

Material properties of steel bars and concrete.

Reinforcement					Concrete
Bar type	Yield strength; (MPa)	Ultimate tensile strength; (MPa)	Elastic modulus; (MPa)	Ratio of elongation; (%)	Cubic compressive strength; (MPa)
300D6	417.0	541.4	2.12 10^5	30.5
400D8	454.1	640.3	2.65 10^5	28.5	42.3
400D10	433.6	627.8	2.25 10^5	29.1