## Solution to Problem 564 | Unsymmetrical Beams

**Problem 564**

Repeat Prob. 563 using 2-in. by 10-in. pieces.

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**Problem 564**

Repeat Prob. 563 using 2-in. by 10-in. pieces.

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**Problem 563**

A box beam is made from 2-in. by 6-in. pieces screwed together as shown in Fig. P-563. If the maximum flexure stress is 1200 psi, compute the force acting on the shaded portion and the moment of this force about the NA. Hint: Use the results of Prob. 562.

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**Problem 523**

Solve Prob. 522 if w_{o} = 600 lb/ft.

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**Problem 522**

A box beam is composed of four planks, each 2 inches by 8 inches, securely spiked together to form the section shown in Fig. P-522. Show that I_{NA} = 981.3 in^{4}. If w_{o} = 300 lb/ft, find P to cause a maximum flexural stress of 1400 psi.

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