**Example 1 ^{1}**

**Problem:** Two 1.2 kip vertical loads
are applied to pin B of the assembly shown. Knowing that a 0.6 inch diameter
pin is used at each connection, determine the maximum value of the average
normal stress in links AB and BC. Also determine the shearing stresses
in the pins and the bearing stress at C.

**Solution:** The links are two-force
members, so a free body diagram of pin B is:

Now I compute the normal stresses...

Next, I find the shearing stresses in the pins...

Note that a factor of two was used in each denominator since both pins are in double shear.

The bearing stress in member BC at C is:

^{1} This is Problem 1.16
in Beer & Johnston's Mechanics of Materials, 2^{nd} Edition,
McGraw-Hill.