Question $1(10$ points$)$

Compute the weight per area of a wood building floor that consists of:

$\backslash (>\backslash )$ Sheathing: $1-1/4$ in$.$ plywood

$\backslash (>\backslash )$ Floor covering$/$finishing: $1$ in$.$ hardwood

$\backslash (>\backslash )$ Insulation: Expanded polystyrene foam, EPS, filling $3/4$ of joist space

$\backslash (>\backslash )$ Ceiling: $\backslash (1/2\backslash )$ in$.$ plaster

$\backslash (>\backslash )$ Framing: Joists $\backslash ((3\backslash$times $6\backslash )$ with $16$ in$.$ spacing$)$