Question: A farm owner is going to erect a maintenance building with a connecting electrical generator and water tank. The activities, activity descriptions, and estimated durations are given in the following table.(Notice that the activities are defined not by node numbers but by activity descriptions. This alternative form of expressing activities and precedence relationships is often used in CPM/PERT). Construct the network for this project, identify the critical path and determine the project duration.

Activity Activity description Activity predecessor activity duration

(Weeks)

A Excavate ------------------ 2

B Erect building a 6

C Install generator a 4

D Install tank a 2

E Install maintenance equipment b 4

F Connect generator and tank to building b, c, d 5

G Paint finish b 3

H Check out facility e, f 2

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