A$.$ Prepare Site $5$ days None

B$.$ Install Rough Plumbing $4$ days Prepare Site

C$.$ Pour Concrete Foundation $4$ days Install Rough Plumbing

D$.$ Concrete Curing Time $3$ days Pour Concrete Foundation

E$.$ Preassemble Wall Frames $10$ days None

F$.$ Erect Wall Frames $5$ days Preassemble Wall Frames, Cure Concrete

G$.$ Install Roof $2$ days Erect Wall Frames

H$.$ Install Wiring $5$ days Install Roof

I. Install Exterior Siding $4$ days Install Roof

J$.$ Install Insulation $2$ days Install Exterior Siding

K$.$ Hang Drywall $4$ days Install Insulation, Install Wiring

L$.$ Install Windows $1$ day Hang Dry Wall

M$.$ Paint Interior $8$ days Install Windows

N$.$ Paint Exterior $4$ days Install Exterior Siding

O$.$ Level Yard $3$ days Cure Concrete

P$.$ Landscape Yard $4$ days Level Yard

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a$-1.$ Calculate the earliest start and finish for each task.

a$-2.$ Calculate the slack for every project activity.

a$-3.$ Identify the critical path.

c$-1.$ What will happen to the project if the materials needed for the frame preassembly are not available until the second day of the project?

c$-2.$ What if the materials were delayed until the tenth day?