The CyClon project team has started gathering the information

necessary to develop a project network$$predecessor activities and

activity time in days. The results of their meeting are found in the

following table.

Activity Description Duration Predecessor

$1$ CyClon

Project

$2$ Design $10$

$3$ Procure

prototype

parts

$102$

$4$ Fabricate

parts

$82$

$5$ Assemble

prototype

$43,4$

$6$ Laboratory

test

$75$

$7$ Field test $106$

$8$ Adjust

design

$67$

$9$ Order stock

components

$108$

$10$ Order

custom

components

$158$

$11$ Assemble

test

production

unit

$109,10$

$12$ Test unit $511$

$13$ Document

results

$312$

Part A$.$ Create a network based on the information in the table. How

long will the project take? What is the critical path?

Part B$.$ Upon further review the team recognize that they missed three

finish$-$to$-$start lags. Procure prototype parts will involve only $2$ days of

work but it will take $8$ days for the parts to be delivered. Likewise, Order

stock components will take $2$ days of work and $8$ days for delivery and

Order custom components will take $2$ days of work and $13$ days for

delivery.

Reconfigure the CyClon schedule by entering the three finish$-$to$-$start

lags. What impact did these lags have on the original schedule? On the

amount of work required to complete the project?

Part C$.$ Management is still not happy with the schedule and wants the

project completed as soon as possible. Unfortunately, they are not willing

to approve additional resources. One team member pointed out that the

network contained only finish$-$to$-$start relationships and that it might be

possible to reduce project duration by creating start$-$to$-$start lags. After

much deliberation the team concluded that the following relationships

could be converted into start$-$to$-$start lags:

$1.$ Procure prototype parts could start $6$ days after the start of Design.

$2.$ Fabricate parts could start $9$ days after the start of Design.

$3.$ Laboratory test could begin $1$ day after the start of Assemble prototype.

$4.$ Field test could start $5$ days after the start of Laboratory test.

$5.$ Adjust design could begin $7$ days after the start of Field test.

$6.$ Order stock and Order custom components could begin $5$ days after

Adjust design.

$7.$ Test unit could begin $9$ days after the start of Assemble test production

unit.

$8.$ Document results could start $3$ days after the start of Test unit.

Reconfigure the CyClon schedule by entering all nine start$-$to$-$start lags.

What impact did these lags have on the original schedule $($Part A$)?$ How

long will the project take? Is there a change in the critical path? Is there a

change in the sensitivity of the network? Why would management like

this solution?