Rotation Stiffness Investigation of Spatial Joints with End-Plate Connection

Table 9

Calculation of the ignored area of the column web.

Tensile region of the column web		Compressive region of the column web
Condition for ignored tensile area	Ignored tensile area St	Condition for ignored compressive area	Ignored compressive area Sc
(d − db)tan θc	0.5{(d − db)^2 tan θ + db^2}	s0.5{beff,c − (d − db)tan θ}	0.5{(d − db)^2 tan θ + db^2}
(d − db)tan θc	0.25{c(2d − 2db − c cot θ) + 2db^2 + (d − db)^2 tan θ}	s0.5{beff,c − (d − db)tan θ}; s0.5{beff,c + (d − db)tan θ}	0.25{(d − db)^2 tan θ + db^2}
		s0.5{beff,c + (d − db)tan θ}	0