Pinto Pm2 Ism Ch09

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INSTRUCTORS RESOURCE MANUAL

CHAPTER NINE

Project Scheduling:

Networks, Duration Estimation, and Critical Path

To Accompany

PROJECT MANAGEMENT:

Achieving Competitive Advantage

ByJeffrey K. Pino

Copyright 2010 Pearson Education, Inc. Publishing as Prentice Hall

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CHAPTER NINE

PROJEC !OC"S # he S$allation Neutron Source Project

%NROD"C%ON

&'1 PROJEC SC(ED")%N*

&'+ E- SC(ED")%N* ER.%NO)O*-

&'/ DE0E)OP%N* NE2OR

)a3eling Nodes

Serial cti4ities

Concurrent cti4ities

5urst cti4ities

.erge cti4ities&'6 D"R%ON ES%.%ON

&'7 CONSR"C%N* (E CR%%C) P(

Calculating the Network

he !orward Pass

he 5ackward Pass

)addering cti4ities

(ammock cti4ities

Ste$s to Reduce the Critical Path

Project .anagement Research in 5rie8 # So8tware De4elo$ment Dela9s and Solutions

Summar9

e9 erms

Sol4ed Pro3lems

Discussion uestions

Pro3lems

%nternet E;ercises

.SProject E;ercises

P.P Certi8ication Sam$le uestions

5i3liogra$h9


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TRANSPARENCIES

!." RULES #OR $E%ELOPIN& ACTI%IT' NET(ORKS

". Some )eerminaion of aci*iy prece)ence or)erin+ m,- e )one

prior o creain+ /e ne0or1.

2. Ne0or1 )ia+ram- ,-,a33y f3o0 from 3ef o ri+/.

4. An aci*iy canno e+in ,ni3 a33 prece)in+ connece) aci*iie-

/a*e een comp3ee).

5. Arro0- on ne0or1- in)icae prece)ence an) 3o+ica3 f3o0. Arro0-

can cro-- o*er eac/ o/er6 a3/o,+/ i i- /e3pf,3 for c3ariy- -a1e

o 3imi /i- effec 0/en po--i3e.

7. Eac/ aci*iy -/o,3) /a*e a ,ni8,e i)enifier a--ociae) 0i/ i

9n,mer6 3eer6 co)e6 ec.:.

;. Loopin+6 or recyc3in+ /ro,+/ aci*iie-6 i- no permie).


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!.2 LABELS #OR ACTI%IT' NO$E


6

Earl9 %D Num3er Earl9

Start !inish

cti4it9 cti4it9 Descri$tor !loat

)ate cti4it9 )ate

Start Duration !inish


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!.4 PROJECT ACTI%ITIES LINKE$ IN SERIES


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!.5 ACTI%ITIES LINKE$ IN PARALLEL 9CONCURRENT:



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!.7 MER&E ACTI%ITIES


=

cti4it9

cti4it9 5

cti4it9 C

cti4it9 D


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!.; BURST ACTI%ITIES


>

cti4it9 C

cti4it9 5

cti4it9

cti4it9 D


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!.< E>AMPLE O# CREATIN& A PROJECT ACTI%IT'

NET(ORK

Informaion for Ne0or1 Con-r,cion

Name? Pro=ec $e3a

Aci*iy $e-cripion Pre)ece--or-

A Conrac -i+nin+ None

B @,e-ionnaire )e-i+n A

C Tar+e mar1e I$ A

$ S,r*ey -amp3e B6 C

E $e*e3op pre-enaion B

# Ana3ye re-,3- $

& $emo+rap/ic ana3y-i- C

H Pre-enaion o c3ien E6 #6 &


&


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!. ACTI%IT' NET(ORK #OR E>AMPLE


Contract

C .arket %D

5

Design

*

Demog'

E De4' Present'

D Sur4e9

! nal9sis

( Present

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!.! ACTI%IT' $URATION ESTIMATION BETA

$ISTRIBUTION

ESTIMATE$ TIME #ORMULA

TE D A 59B: C

;

(HERE?

A D MOST OPTIMISTIC TIME

B D MOST LIKEL' TIME

C D MOST PESSIMISTIC TIME


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!."F CONSTRUCTIN& THE CRITICAL PATH

IN#ORMATION #OR PROJECT $ELTA

Aci*iy $e-cripion Pre)ece--or- E-imae) $,raion

A Conrac -i+nin+ None 7

B @,e-ionnaire )e-i+n A 7

C Tar+e mar1e I$ A ;

$ S,r*ey -amp3e B6 C "4

E $e*e3op pre-enaion B ;

# Ana3ye re-,3- $ 5

& $emo+rap/ic ana3y-i- C !

H Pre-enaion o c3ien E6 #6 & 2


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!."F 9Con):

Paria3 Pro=ec Aci*iy Ne0or1 0i/ Ta-1 $,raion-


Contract

7

5Design

7

C

.arket %D

nal9sis6

1? E 1

+> ( /?Presentation

+> + /?

1=


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!."7 COMPLETE$ ACTI%IT' NET(ORK (ITH CRITICAL PATH AN$ ACTI%IT'

SLACK TIMES I$ENTI#IE$

Criica3 Pa/ i- in)icae) in o3)


? 7? Contract

? 7 7

7 5 1?

1 Design

< 7 11

7 C 11

? .arket %D7 < 11

11 D +6? Sur4e9

11 1/ +6

11 * +?> Demogra$h'

1& & +>

+6 ! +>? nal9sis

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1? E 1ERCISES

EGerci-e !."

Consider the 8ollowing in8ormation that 9ou ha4e com$iled regarding the ste$s needed to

com$lete a $roject' -ou ha4e identi8ied all rele4ant ste$s and ha4e made some

determination regarding $redecessorGsuccessor relationshi$s' "sing .SProject, de4elo$

a sim$le Network diagram 8or this $roject, showing the links among the $roject acti4ities'

cti4it9 Predecessors

# Sur4e9 site F

5 # %nstall sewer and storm drainage

C # %nstall gas and electric $ower lines

D # E;ca4ate site 8or s$ec house 5, C

E # Pour 8oundation D

So3,ion?

Entering the acti4ities and assigning the $redecessor relationshi$s using .SProject, the

Network Diagram should resem3le the 8ollowing:

.icroso8t $roduct screen shots re$rinted with $ermission 8rom .icroso8t Cor$oration'


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EGerci-e !.2

Su$$ose we ha4e a com$lete acti4it9 $redecessor ta3le shown 3elow and we wish to

create a Network diagram highlighting the acti4it9 se@uence 8or this $roject' "sing

.SProject, enter the acti4ities and their $redecessors and create a com$lete acti4it9

Network diagram 8or this $roject'

Pro=ec Remo)e3in+ an App3iance

cti4it9 Predecessors

' Conduct com$etiti4e anal9sis F

5' Re4iew 8ield sales re$orts F

C' Conduct tech ca$a3ilities assessment F

D' De4elo$ 8ocus grou$ data , 5, C

E' Conduct tele$hone sur4e9s D

!' %denti89 rele4ant s$eci8ication im$ro4ements E

*' %nter8ace with .arketing sta88 !

(' De4elo$ engineering s$eci8ications *

%' Check and de3ug designs (

J' De4elo$ testing $rotocol *

' %denti89 critical $er8ormance le4els J

)' ssess and modi89 $roduct com$onents %,

.' Conduct ca$a3ilities assessment )

N' %denti89 selection criteria .

O' De4elo$ R! .

P' De4elo$ $roduction master schedule N, O

' )iaison with Sales sta88 P

R' Pre$are $roduct launch


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So3,ion?

Entering the a3o4e 4alues and $redecessor relationshi$s, we would deri4e the 8ollowing network diagram' Note that as in the case o8

E;ercise &'1, without duration estimates, all acti4ities are assumed to 3e o8 similar duration, making e4er9 acti4it9 in the network $art

o8 the critical $ath'



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EGerci-e !.4

Su$$ose that we add some duration estimates to each o8 the acti4ities 8rom e;ercise &'1'

$ortion o8 the re4ised ta3le is shown 3elow' Recreate the Network diagram 8or this

$roject and note how .SProject uses nodes to identi89 acti4it9 durations, start and 8inish

dates, and $redecessors' 2hat is the critical $ath 8or this network diagram (ow do we

know

cti4it9 Duration Predecessors

# Sur4e9 site 7 da9s F

5 # %nstall sewer and storm drainage & da9s

C # %nstall gas and electric $ower lines 6 da9s

D # E;ca4ate site 8or s$ec house + da9s 5, C

E # Pour 8oundation + da9s D

So3,ion?

Entering the a3o4e 4alues and durations, the network diagram would resem3le the

8ollowing' %8 this network were shown on a com$uter screen, 9ou would note that the

critical $ath is highlighted in red, identi89ing the acti4ities # 5 # D # E as l9ing on the

critical $ath'



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Pinto Pm2 Ism Ch09