WBS 2012-14

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BREAKDOWN

STRUCTURE

AND ORGANISATION

AL

BREAKDOWN

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BREAKDOWN

Module 2: Work Breakdown Structure

Topics:

Work Breakdown Structure

WBS dictionary

Organizational Breakdown Structure (OBS)

Responsibility Assignment atri! (RA)

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What is a Work Breakdown Structure?

Module 2 – Work Breakdown Structure

"lanning a pro#ect using earned $alue management is no di%%erent t&an t&einitial planning necessary to implement any gi$en pro#ect' T&ere are basicitems t&at you need to know and understand as a pro#ect manager:

W&at makes up my entire pro#ect (Scope) W&at is t&e agreed upon work scope and w&at is additional work

W&at are my start and completion dates (Sc&edule)

ow muc& is t&e pro#ect going to cost (*ost)

O$er t&e years+ it was determined t&at pro#ect managers needed a tool to &elpcapture and control t&eir pro#ect scope' T&is led to t&e de$elopment o% aWork Breakdown Structure (WBS)'

On t&e %ollowing pages we will de%ine and discuss a WBS.

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Building a WBS

Building a WBS %or t&e construction o% a single %amily &ome'

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WBS: Structure

T&e A*, ousing *orporation+ w&ic& you own+ &as been contracted to buildits %irst &ouse' -ou want to be able to manage your pro#ects e%%ecti$ely and

e%%iciently+ so you c&arge your pro#ect managers to de$elop an appropriate

WBS' -ou decide to manage t&e pro#ect by t&e indi$idual tasks necessary to

complete t&e &ouse'

-ou &ope t&at t&is is t&e %irst o% many &ouses t&at A*, will build+ so you start

t&e WBS wit& A*, in t&e &ig&est position+ or .e$el /' Accordingly+ .e$el /is gi$en a WBS code o% /' -ou assign t&e WBS code o% / to t&e &ig&est le$el

because all %uture pro#ects (&ouses) will be summarized at .e$el /.

Level 1

0OT,: 1or ease o% e!planation+ our

e!ample will assume t&e %ollowing:

2 3esign is complete

2 All permits issued

2 All aterial ordered

2 4nspection &appens

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WBS: Structure

Wit& .e$el / establis&ed+ you can begin to complete t&e WBS' But w&at s&ouldt&e ne!t le$el be

T&e logical ne!t le$el %or A*, is t&e pro#ect le$el' .e$el 5 is t&e le$el %or eac&

indi$idual pro#ect+ or &ouse+ t&at A*, undertakes' As t&e c&art s&ows

below+ .e$el 5 is identi%ied at t&e pro#ect le$el: ouse'

Appropriately+ t&e code %or .e$el 5 corresponds to .e$el /' 4n t&is case+ t&e

code is /'/'

Level 1

Level 2

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WBS: Structure

At t&is point you determine t&at you want to di$ide t&e work into t&e ma#or

elements needed to build a &ouse' -ou c&oose to di$ide .e$el 6 into si!

elements: concrete+ %raming+ plumbing+ electrical+ interior and roo%ing' -ou

realize t&at t&ese are bot& ma#or deli$erables and milestones %or managing

t&e pro#ect' T&ey also enable you to get to your goal o% managing t&e pro#ectby task'

0otice t&e WBS codes at le$el 6' ,ac& is uni7ue to t&e pro#ect and starts wit&

t&e WBS code %rom t&e le$el abo$e (//'//'/'/)'

Level 1

Level 2

Level 3

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WBS: Structure

Module 2 – Work Breakdown Structure

.e$el 8 o% t&e WBS will enable us to manage t&e pro#ect as desired' All o% our

contractors %it into speci%ic elements at le$el 8+ and so do all speci%ic departments'

As wit& t&e pre$ious .e$els+ note t&e WBS codes t&at &a$e been assigned to t&e

tasks and t&eir relations&ip to t&e pre$ious .e$el.

Level 4

Level 3

Level 1

Level 2

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WBS: Structure

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Work Breakdown Structure (WBS) Tree

T&e grap&ical structure o% t&e WBS is an easyway to identi%y t&e pro#ect components andrelations&ips o% t&ose components9&owe$er+ t&e WBS can be displayed inanot&er %ormat as well: t&e Tree %ormat'Bot& %ormats are acceptable' T&e grap&ical%ormat is at times easier to understand+ but

can take up considerable space in a report'T&e tree is not as easy to understand but ismore easily incorporated into a report%ormat'

0ote t&e WBS codes and t&e structure o% t&e.e$els in t&e Tree %ormat mirror t&e

grap&ical %ormat' T&e content &as notc&anged9 only t&e way t&e content ispresented &as c&anged'

1 ACME Housin Cor!oration

1.1 "ew Ho#e Construction

1.1.1 Concrete

1.1.1.1 $our %oundation

1.1.1.2 &nstall $atio

1.1.1.3 $our Stairwa'

1.1.2 %ra#in

1.1.2.1 %ra#e E(terior Walls

1.1.2.2 %ra#e &nterior Walls

1.1.2.3 &nstall )oo*in +russes

1.1.3 $lu#,in

1.1.3.1 &nstall Water Lines

1.1.3.2 &nstall -as Lines

1.1.3.3 &nstall B/ %i(tures

1.1.4 Electrical

1.1.4.1 &nstall Wirin

1.1.4.2 &nstall 0utletsSwitces

1.1.4.3 &nstall %i(tures

1.1. &nterior

1.1..1 &nstall r'wall

1.1..2 &nstall Car!ets

1.1..3 &nstall $aintin

1.1. )oo*in

1.1..1 &nstall %elt

1.1..2 &nstall Sinles

1.1..3 &nstall 5ents

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+e 1667 )ule

+e 1667 )ule states tat te WBS includes 1667 o* te

work de*ined ,' te !ro8ect sco!e and ca!tures all

delivera,les i.e. internal9 e(ternal9 interi#: in ter#s o* te

work to ,e co#!leted9 includin !ro8ect #anae#ent.

T&e WBS s&ould not include any work t&at %alls outside t&e

actual scope o% t&e pro#ect+ t&at is+ it cannot include more t&an

/; o% t&e work'

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E(a#!le ; +e 1667

)ule

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WBS Dictionary

Once t&e WBS is complete9 t&e WBS dictionary needs to be t&e ne!t itemde$eloped' T&e WBS dictionary is a narrati$e documentation o% t&e e%%ort neededto accomplis& all work de%ined in t&e WBS' T&e WBS dictionary is de$eloped %ort&e lowest le$el element in t&e WBS only'

To better understand &ow a WBS and a WBS dictionary work+ let

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Once WBS is de$eloped+ t&e appropriate resources and responsibilities need to

assigned' T&e %irst step in doing t&is is de$eloping t&e Organizational

Breakdown Structure (OBS) %or t&e pro#ect' T&e OBS indicates t&e

organizational relations&ips and is used as t&e %ramework %or assigning work

responsibilities' Below is an e!ample o% t&e OBS %or t&e A*, &ousebuilding pro#ect' T&e OBS is structured by Responsible 3epartment and t&en

by "er%orming 3epartment at t&e lowest le$el' T&is "er%orming 3epartment

le$el is were t&e responsibility and resource needed to accomplis& t&e

pro#ect will be assigned'

C0"C)E+E

$E)% E$+ 616

M. Mannin

MAS0")=

$E)% E$+ 626

+. -rea#s

+ES+

$E)% E$+ 636

/. "eu#ann

C&5&L

)ES$ E$+

). /ell'

CA)$E"+)=

$E)% E$+ 616

). Sites

)00%&"-

$E)% E$+ 626

=. +a'lor

)=WALL

$E)% E$+ 636

. S#it

S+)>C+>)AL

)ES$ E$+

$. +ate

$E)% E$+ 4616

S. ?onson

H00/>$+&E;&"

$E)% E$+ 4626

$. 0ttis

ELEC+&CAL

)ES$ E$+

?. Si#s

WA+E)SEWE)

$E)% E$+ 3616

/. Wells

-AS

$E)% E$+ 3626

). 0riel'

$L>MB&"-

)ES$ E$+

). Lee

$)0?EC+ 0%%&CE

)ES$ E$+

B. S#iters

W&)&"-

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erging t&e WBS and OBS+ t&e pro#ect manager creates a Responsibility

Assignment atri! (RA)' T&e RA displays t&e lowest le$el o% bot& t&eWBS and t&e OBS' T&e integration identi%ies speci%ic responsibility %or

speci%ic pro#ect tasks' 4t is at t&is point t&at t&e pro#ect manager de$elops

control accounts or work package'

)es!onsi,ilit'Assin#ent Matri(

)es!onsi,ilit'Assin#ent Matri(

C 0 " C ) E + E

$ E ) %

E $ + 6 1 6

M . M

a n n i n

M A

S 0 " ) =

$ E ) % E $ + 6 2 6

+ . - r e a # s

+ E S +

$ E ) % E $ + 6 3 6

/ . "

e u # a n n

C & 5 & L

) E S $

E $ +

) . /

e l l '

C A ) $ E " + ) =

$ E ) % E $ + 6 1 6

) . S i t e s

) 0 0 % & " -

$ E ) % E $ + 6 2 6

= . + a ' l o r

) = W A L L

$ E ) % E $ + 6 3 6

. S # i t

S + ) > C + > ) A L

) E S $ E $ +

$ . + a t e

$ E ) % E $ + 4 6 1 6

S . ? o n s o n

H 0 0 / > $ + & E ; & "

$ E ) % E $ + 4 6 2 6

$ . 0 t t i s

E L E C + & C A L

) E S $ E $ +

? . S i # s

W A + E )

S E W E )

$ E ) %

E $ + 3 6 1 6

/ . W e l l s

-

A S

$ E ) %

E $ + 3 6 2 6

) . 0 r i e l '

$ L > M B & " -

) E S $ E $ +

) . L e e

$ ) 0 ? E C + 0 % % & C E

) E S $ E $ +

B . S # i t e r s

W & ) & " -

C 0 " C ) E + E

$ E ) %

E $ + 6 1 6

M . M

a n n i n

M A

S 0 " ) =

$ E ) % E $ + 6 2 6

+ . - r e a # s

+ E S +

$ E ) % E $ + 6 3 6

/ . "

e u # a n n

C & 5 & L

) E S $

E $ +

) . /

e l l '

C A ) $ E " + ) =

$ E ) % E $ + 6 1 6

) . S i t e s

) 0 0 % & " -

$ E ) % E $ + 6 2 6

= . + a ' l o r

) = W A L L

$ E ) % E $ + 6 3 6

. S # i t

S + ) > C + > ) A L

) E S $ E $ +

$ . + a t e

$ E ) % E $ + 4 6 1 6

S . ? o n s o n

H 0 0 / > $ + & E ; & "

$ E ) % E $ + 4 6 2 6

$ . 0 t t i s

E L E C + & C A L

) E S $ E $ +

? . S i # s

W A + E )

S E W E )

$ E ) %

E $ + 3 6 1 6

/ . W e l l s

-

A S

$ E ) %

E $ + 3 6 2 6

) . 0 r i e l '

$ L > M B & " -

) E S $ E $ +

) . L e e

$ ) 0 ? E C + 0 % % & C E

) E S $ E $ +

B . S # i t e r s

W & ) & " -

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)es!onsi,ilit' Assin#ent Matri( @)AM erging WBS and OBS = RA or Responsibility Assignment atri!+ t&e

lowest le$el o% bot&' T&is identi%ies speci%ic responsibility %or speci%ic tasks'

;; ;; ;; ;; ;;

>>

>>

>>

>>

>>

WBS Lowest level

0 B S L o

w e s t l e v e l

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Responsiility !ssign"ent Matri# (R!M)

Below is part o% t&e RA %or t&e A*, &ousing pro#ect'T&e lowest le$el o% t&e WBS appears across t&e top

T&e lowest le$el o% t&e OBS appears on t&e $ertical a!is

An ?@ appears at t&e intersection o% t&e WBS task and OBS personnel' T&e ?@

de%ines t&e speci%ic per%orming department (%rom t&e OBS) assigned to

complete a task (%rom t&e WBS)'

"er%orming 3ept' anager

"our

1oundation

/'/'/'/

4nstall "atio

/'/'/'5

"our

Stairway

/'/'/'6

1rame

,!terior

Walls

/'/'5'/

1rame

4nterior

Walls

/'/'5'5

4nstall

Roo%ing

Trusse

/'/'5'6

4nstall

Water

.ines

/'/'6'/

4nstall as

.ines

/'/'6'5

4nstall BCD

1i!tures

/'/'6'6

*O0*R,T,

3,"T E/ anning ASO0R-

3,"T E5 reams T,ST

3,"T E6 0eumann

*AR",0TR-3,"T F/ Sites ROO140

3,"T F5 Taylor 3R-WA..

3,"T F6 Smit& W4R40

3,"T 8/ Go&nson

OODH"CT4,>40

3,"T 85 Ottis

WAT,RCS,W,R

3,"T 6/ Wells AS

3,"T 65 Oriely

/'/'6

".HB40*O0*R,T,

/'/'/

1RA40

/'/'5

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To better understand t&e RA+ consider t&e A*, &ousing pro#ect'T&e OBS speci%ies r' Sites and t&e carpentry department as responsible %or

%raming t&e e!terior walls' T&ere%ore+ in t&e RA+ an @ appears at t&e cross>

section between t&e task+ %raming t&e e!terior walls+ and t&e responsible party+

r' Sites' Additionally+ r' Sites is also responsible %or %raming t&e interior walls

and installing t&e roo%ing trusses.


"our

1oundation

/'/'/'/

4nstall "atio

/'/'/'5

"our

Stairway

/'/'/'6

1rame

,!terior

Walls

/'/'5'/

1rame

4nterior

Walls

/'/'5'5

4nstall

Roo%ing

Trusse

/'/'5'6

4nstall

Water

.ines

/'/'6'/

4nstall as

.ines

/'/'6'5

4nstall BCD

1i!tures

/'/'6'6

*O0*R,T,

3,"T E/ anning ASO0R-

3,"T E5 reams T,ST

3,"T E6 0eumann *AR",0TR-

3,"T F/ Sites ROO1403,"T F5 Taylor 3R-WA..

3,"T F6 Smit& W4R40

3,"T 8/ Go&nson

OODH"CT4,>40

3,"T 85 Ottis

WAT,RCS,W,R

3,"T 6/ Wells AS

3,"T 65 Oriely

/'/'6".HB40*O0*R,T,

/'/'/1RA40

/'/'5

Alt ti l & d d ll b d i t& RA t& t& ?@

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Alternati$ely+ &ours and dollars may be used in t&e RA rat&er t&an an ?@'

Hsing our A*, ouse e!ample+ t&e ?@ was replaced wit& t&e &ours

needed to complete t&e task' 0ow we see t&at r' Sites &as 6 &ours to

%rame t&e e!terior walls+ 5F &ours to %rame t&e interior walls and /IF &ours

to install t&e roo%ing trusses'


"our

1oundation

/'/'/'/

4nstall "atio

/'/'/'5

"our

Stairway

/'/'/'6

1rame

,!terior

Walls

/'/'5'/

1rame

4nterior

Walls

/'/'5'5

4nstall

Roo%ing

Trusse

/'/'5'6

4nstall

Water

.ines

/'/'6'/

4nstall as

.ines

/'/'6'5

4nstall BCD

1i!tures

/'/'6'6

*O0*R,T,

3,"T E:/: anning 266 12 D

ASO0R-3,"T E:5: reams 6T,ST

3,"T E:6: 0eumann 26 16

*AR",0TR-

3,"T F:/: Sites 366 26 1E

ROO140

3,"T F:5: Taylor 166

3R-WA..3,"T F:6: Smit& 2EW4R40

3,"T 8:/: Go&nson

)OODH"CT4,>40

3,"T 8:5: Ottis

WAT,RCS,W,R

3,"T 6:/: Wells 166 1

AS3,"T 6:5: Oriely 12 2

/'/'6".HB40*O0*R,T,

/'/'/1RA40

/'/'5

WBS 2012-14

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Transcript of WBS 2012-14