A Conceptual Design Approach of Coupled Shear Walls

Table 8

Compare the Modeling Parameters and Numerical Acceptance Criteria with FEMA 273 [14] and FEMA 356 [15].

Longitudinal reinforcement and transverse reinforcement	Shear/𝑡𝑤𝐿𝑤𝑓^′𝑐	Rotational limit at collapse prevention level (CP) in radians							Crack width in coupling beam  at CP level in meters by    ATENA2D [18]
		Member controlled   by flexure		Member controlled   by shear		ATENA2D [18]
		FEMA 273 [14]	FEMA; 356 [15]	FEMA 273 [14]	FEMA 356 [15]	𝐿𝑏=0.6 m	𝐿𝑏=0.9 m	𝐿𝑏=1.2 m	𝐿𝑏=0.6 m	𝐿𝑏=0.9 m	𝐿𝑏=1.2 m
Conventional longitudinal reinforcement with conforming transverse reinforcement	≤3	0.025	0.025	0.015	0.020	0.000881	0.00104	0.002325	0.000263	0.000306	0.000559
	≥6	0.015	0.02	0.010	0.016	0.00348	0.00528	0.00886	0.0007125	0.001726	0.003124
Diagonal	≤3	0.03	0.03	—	—	0.00235	0.011	0.0111	0.000494	0.004315	0.00372
	≥6	0.03	0.03	—	—	0.00292	0.00833	0.00978	0.0005724	0.002961	0.003228
Truss	≤3	NA	NA	NA	NA	0.001176	0.000422	0.00093	0.0003144	0.0001066	0.000204
	≥6	NA	NA	NA	NA	0.001413	0.00297	0.0029	0.000344	0.0007514	0.00066