Since the radius of gyration depends on the moment of inertia and the area of section, it follows that for a given section, the radius of gyration about two axes will be proportional to their moments of inertia about these axes.

If d equals the distance in inches from the center of each beam to the neutral axis of the two, in order to obtainI1-1 = I3.3 we must have I1-1 = I2.2 + A d2.

In the above case

I1-1 _ L2-2 = 2,087.548 - 42.538 = 23.323 d2

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= 9.35 Therefore D = 2 X 9.35 = 18.70.

Table VIII. Properties Of Standard And Special Angles. Angles With Unequal Legs

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Angles marked • are special.

Angles with Unequal Legs.

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Angles marked * are special.

Angles with Unequal Legs.

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Angles marked * are special.

Angles with Unequal Legs.

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Angles marked * are special.