Information:

You have received a request for proposal $($RFP$)$ to complete the concrete portion of a slab on grade for a residence in northern California. You will be responsibic for providing and installing a $6$ mil. vapor barrier, as well as pouring and finishing a concrete slab using $2500$ psi concrete.

The slab has the following dimensions: ${25}^{\text{'}}{40}^{\text{'}}{0}^{\text{'}}-4^{\text{'}\text{'}}$

Keep it simple: Don't worry about turning down$/$overlapping the vapor barrier, etc. Just use straight floor area $({25}^{\text{'}}{40}^{\text{'}})$ for the calculations.

You are NOT responsible for reinforcing, pour$-$break material, or formwork.

Materials:

$6$ mil. vapor barrier $-{100}^{\text{'}}$ by ${10}^{\text{'}}$ roll $-$ $$65$

$2500$ psi concrete $-$ $$105/$CY $($includes delivery$)$

Labor:

Laborer installing vapor barrier $-$ Hourly rate $$\frac{16}{h}r,$ productivity rate $500S\frac{F}{h}r$

Laborer placing concrete $-$ Hourly rate $$\frac{20}{?}$ hour, productivity rate $10C\frac{Y}{h}r$

Laborer finishing concrete $-$ Hourly rate $$\frac{20}{?}$ hour, productivity rate $250S\frac{F}{h}r$

How many CY of concrete are required to complete the slab on grade?

Since unit cost has been provided $(\frac{\text{\$}}{C}Y),$ what is the total material cost for the concrete?

How many square feet of vapor barrier are required?

What is the total material cost for the vapor barrier?

What is the square footage of concrete slab that must be finished?

What is the unit cost $($$$/$SF$)$ for labor to install the vapor barrier?

What is the unit cost $($$$/$CY$)$ for labor to place the concrete?

What is the unit cost $($$$/$SF$)$ for labor to finish the concrete?