Sectional Analysis Procedure for Reinforced Concrete Members Subjected to Pure Torsion

Table 3

Comparison of calculated and experimental ultimate torques (reproduced from [10]).

Specimen ID	Reinforcement layout	ACI 318 [4]	Skew bending theory [6]	Spalled truss model [21]	Softened truss model [22, 23]	This study
H-06-06	Beam 1	0.78	0.93	0.88	1.01	0.89
H-07-10		0.79	0.67	0.86	0.97	0.85
H-14-10		0.97	0.91	1.03	1.15	1.04
N-06-06		0.9	0.78	0.96	1.02	1.02
N-07-10		0.9	0.68	0.85	0.78	0.95
N-14-10		1.05	0.9	0.92	0.79	1.06
H-06-12	Beam 2	0.83	0.74	0.93	1.04	0.90
H-12-12		0.87	0.86	0.95	1.05	0.94
N-06-12		1.01	0.77	1.05	1.01	1.08
N-12-12		1.16	1.04	1.15	0.99	1.17
H-07-16	Beam 3	0.89	0.59	0.93	0.97	0.94
H-12-16		0.93	0.68	0.98	0.97	0.97
N-07-16		1.1	0.65	0.85	0.79	1.00
N-12-16		1.32	0.88	1.12	0.88	1.06
H-20-20	Beam 4	1.1	0.82	1.11	0.97	1.01
N-20-20		1.67	1.16	1.14	0.85	1.05
Average		1.02	0.82	0.98	0.95	0.99
CoV		0.22	0.18	0.10	0.11	0.08