The beam is constructed from three boards. The allowable shear stress that the wood can sustain is $\backslash (\backslash$tau$\_\{\backslash$text $\{$allow $\}\}=350\backslash$mathrm$\{$psi$\}\backslash ).$ Each nail can resist a shear force of $400$ lb $.($Figure $1)$

Part A

Determine the maximum shear $\backslash ($ V $\backslash )$ that the beam can support.

Express your answer in kilopounds to three significant figures.

$\backslash [$

V$=\backslash$quad $\backslash$text $\{$ kip $\}$

$\backslash ]$

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Part B

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

Express your answer in inches to three significant figures.

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Part C

Determine the maximum allowable spacing $\backslash ($ s $\backslash )$ of the nails used to hold the bottom flange to the web.

Express your answer in inches to three significant figures.