A strut in a steel truss is composed of two equal angles ISA 150 mm 150 mm of thickness 100 mm connected back-toback to the same side of a gusset plate. The cross sectional area of each angle is 2921 mm2 and moment of inertia (Ixx = Iyy) is 6335000 mm4 . The distance of the centroid of the angle from its surface (Cx = Cy) is 40.8 mm. The minimum radius of gyration of the sturt is

A strut in a steel truss is composed of two equal angles ISA 150 mm

1.	A strut in a steel truss is composed of two equal angles ISA 150 mm 150 mm of thickness 100 mm connected back-toback to the same side of a gusset plate. The cross sectional area of each angle is 2921 mm2 and moment of inertia (Ixx = Iyy) is 6335000 mm4 . The distance of the centroid of the angle from its surface (Cx = Cy) is 40.8 mm. The minimum radius of gyration of the sturt is
A.	93.2 mm
B.	62.7 mm
C.	46.6 mm
D.	29.8 mm
Answer» D. 29.8 mm

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