You are working as the Project manager of a residential land development project which consists of six major activities. Activity A$-$

Clearing $($starting activity$),$ Activity B$-$ Excavation $($starts after Activity A is finished$),$ Activity C$-$ Sewer, water, and drainage $($also

starts after Activity A is finished$),$ Activity D$-$ Curbing and paving, and Activity E$-$Vegitation and Landscaping $($ both activities D and

E start just after completion of both the Activity B$,$ and the Activity C$).$ Activity F $($Marking and boundary setting$)$ starts just after

completion of Activity D and activity E$.$ The following Table $1$ shows the direct costs $($labour$,$ material and other direct overhead

cost$)$ for each activity, the duration of the activities, and their sequences. On top of this direct costs, you have to spend $$25,000$

indirect costs for staff salary, and other indirect overhead costs which were planned to be spent uniformly over the project life.

According to the contract condition, you are receiving $12\%$ mark$-$up $($profit$)$ for the whole project, and each period's progress

payment will be made at the end of the following period $($such as period $1$ payment will be made at the end of period $2).$ Assume

a weekly quantity proportional charge cashflow method.

Table $1$: Details of the activities

a$)$ Estimate the week by week overdrafts.

b$)$ Average overdraft.

c$)$ Maximum overdraft.

d$)$ Comment on the outcomes.