The beam is constructed from three boards. $($Figure $1)$

The allowable shear stress that the wood can sustain is $\frac{?}{\text{b}\text{a}\text{r}}({)}_{\text{a}\text{l}\text{l}\text{o}\text{w}}=445$psi. Each nail can support a shear force of $420$ lb $.$

Figure $1$ of $1$

Part A

Determine the maximum shear $V$ that the beam can support.

Express your answer to three significant figures and include appropriate units.

$V=$

$$

RequestAnswer

Part B

Determine the maximum allowable spacing $s$ of the nails used to hold the top flange to the web.

Express your answer to three significant figures and include appropriate units.