CASE $1$: VA Condos

Clark Construction is building a set of new condominiums in the Virginia Beach. The project

consists of eighteen buildings, each housing twelve condominiums. Each building will border the

Virginia Beach Golf Course designed by J$.$ M$.$ Architects. The minimum price for a condominium unit

is $$300,000,$ and buyers expect a high$-$quality project. Response to the initial promotion was so great

that CLARK Construction pre$-$sold all $216$ units based solely on an architect$$s conception and

schematic plans of the project. One reason for the quick sell$-$out may have been the $-$YOU CAN MOVE

IN BY OCTOBER$-$ campaign. As part of this campaign, CLARK promised rebates of $$20,000$ cash

to all $216$ buyers if all the facilities, buildings, and other amenities were not completed by October $15.$

As of mid$-$January, the project is well underway. The following PERT$/$CPM network details the

precedence for the activities of the tasks remaining to be completed in the project. R and T will be

subcontracted.

Three$-$time estimates $($in days$)$ for each of the other activities needed for each condo have been

determined and are given in the following table $($Note: all the condos will be constructed concurrently$)$

You are required to use a full day as the smallest unit for scheduling the activities:

ACTIVITY CODE AND DESCRIPTION Estimated Activity Duration $($a$,$ m$,$ b$)$ Dependencies

optimistic most likely pessimistic

days

A$1.$ Land measurements $5811-$

B$2.$ Layout of measurement stakes $71217$ A

C$3.$ Analysis of surrounding environment $101724$ A

D$4.$ Building of foundation

E$5.$ Approval of construction papers

$122232$ B

$61320$ C

F$6.$ Layout of building framework $111519$ C

G$7.$ Gas line instalment $91827$ C

H$8.$ Electrical wiring $252729$ B$,$ G

I$9.$ Interior plumbing $182022$ E$,$ B

J$10.$ Wall construction $122538$ D$,$ H

K$11.$ Insulation $102336$ I, F

L$12.$ Drywall $152025$ F$,$ I

M$13.$ Roofing $31017$ K$,$ J

N$14.$ Restaurant construction $254055$ G

O$15.$ Swimming pool $92031$ J$,$ K$,$ L$,$ G

P$16.$ Fencing $61014$ J$,$ K$,$ L$,$ G

Q$17.$ Telephone lines $122232$ M$,$ O

R$18.$ Completion of underground M$,$ O

S$19.$ Snack bar $102030$ N

T$20.$ Stream building N

U$\mathrm{.}21$ Outside lighting $81216$ P$,$ S

V$22.$ Parking lots $357$ P$,$ S$,$ Q$,$

W$23.$ Drainage construction $51015$ P$,$ S$,$ Q$,$ T

X$24.$ Safety inspection $91521$ U$,$ W

Y$25.$ Landscaping $62442$ R$,$ V

Z$26.$ Final permits$/$releases $101520$ X$,$ Y

Activity R$,$ the underground sewer activity, consists of installing pipes and connections to join

all eighteen buildings to the main city sewer system. CLARK Construction selected the Comey

Construction alternative for this activity.

Comey Construction has submitted a bid of $$300,000$ for the design and construction of the

required sewer project. It estimates a most likely completion time of $25$ days, with a difference of

plus or minus three days for the optimistic and pessimistic time estimates.

Activity T$,$ the stream building activity, involves building a stream that runs throughout the project

and connects the western and eastern boundaries. CLARK has selected the Lakeport Inc. alter$-$

native:

CLARK has received a bid of $$400,000$ from Lakeport, Inc. to design and build a meandering

stream that will most likely be finished in $30$ days, give or take five days.

Each activity is estimated to need $3$ people with a cost of $$100/$day per person. The indirect cost

of the project is estimated to be $$3500/$day$.$ Assume that today is January $14,$ and that all the work

is to be done on a five$-$day$-$per$-$week basis including holiday periods. Prepare a report for this

project within which you address the followings:

$$ A$1-$Develop tentative $($preliminary$)$ target start and completion dates for each activity. A

Gantt Chart, list of critical activities, and a tabular schedule is required.

$$ A$2-$Assuming unlimited resources optimize the schedule.

$$ B$-$Give a date by which you are $90$ and $95\%$ and $99\%$ sure that the entire project will be

completed based on your preliminary schedule. Complete analysis and discussion are

needed.

$$ C$-$Recommend whether to spend $$25,000$ for additional legal assistance that would reduce

the most likely time to attain the final permits and releases $($activity Z$)$ to $8-10-12$

$($optimistic$-$most likely$-$Pessimistic$)$ days. Discuss.

$$ D$-$Develop a budget for the project based on your recommended plan. And provide any

financial analysis you can provide.