1. Developing a Network Plan
Chapter 4
Developing a Network Plan
Irwin/McGraw-Hill
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2. Rollup of Network Plans
Figure 4-1
WP-2 A B C D E F
WP-1
WP-4
WP-3
Level 1 - Milestone Plan
Level 2 - Plans
Level 3 - Plans
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

3. WBS/Work Packages to Network
Figure 4-2
Circuit board
Design cost account
Production cost account
Test cost account
Software cost account
Lowest element
O r g a n i z a t i o U n i t s
Design WP D-1-1 Specifications WP D-1-2 Documentation
Production WP P-10-1 Proto 1 WP P-10-2 Final Proto 2
Test systems WP T-13-1 Test
Software WP S-22-1 Software preliminary WP S-22-1 Software final version
A D-1-1 D-1-2
B P-10-1
D P-10-2
F S-22-2
K T-13-1
C S-22-1
B Proto 1 5
D Final proto 2 4
A Specifications and documentation 2
C Preliminary software 3
F Final software 2
K Test 3
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©The McGraw-Hill Companies, 2000

4. Activity-on-Node Network Fundamentals
Figure 4-3 X Y Z
Y and Z are preceded by X
Y and Z can begin at the
same time, if you wish
(B) A B C
A is preceded by nothing B is preceded by A C is preceded by B
(A) J K L M
J, K, & L can all begin at the same time, if you wish (they need not occur simultaneously)
All (J, K, L) must be completed before M can begin
but AA
(C)
(D)
Z is preceded by X and Y
AA is preceded by X and Y
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5. Activity-on-Node Network Fundamentals
Figure 4-6 EF
KOLL BUSINESS CENTER County Engineers Design Department
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

6. Activity-on-Node Network Forward Pass
Figure 4-7 20 15 35
200 20 15 10
KOLL BUSINESS CENTER County Engineers Design Department EF
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

7. Activity-on-Node Network Backward Pass
Figure 4-8 LS
KOLL BUSINESS CENTER County Engineers Design Department 20
185 10 15 5
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

8. Activity-on-Node Network with Slack
Figure 4-9
LS EF
KOLL BUSINESS CENTER County Engineers Design Department 20 15
185 10 5
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

9. Software Conversion Project Responsibility Matrix
Figure 4-10
Activities
Organization Unit/Individual
Legend R = Responsibility C = Contributes A = Advises
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

10. Air Control Inc., Custom Order Project—Network Diagram
Figure 4-12 1
Order review 2 3 4 5
Software development
Order standard parts
Produce standard parts
Design custom parts 6 7 8
Manufacture custom hardware
Assemble
Test
Activity #
Legend
Duration ES EF LS LF
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

11. Air Control Inc., Custom Order Project—Gantt Chart
Figure 4-13 7 14 21 28 35 42 49 2 13 15 10 18 5
Order review
Design custom parts
Order standard parts
Produce standard parts
Software development
Manufacture custom hardware
Assemble
Test
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

12. Air Control Inc., Custom Order Project—Network with Dates
Figure 4-14 1
Order review
2 1-Jan Jan 1-Jan Jan 2 3 4 5
Software development
Order standard parts
Produce standard parts
Design custom parts
18 2-Jan 20-Jan 22-Jan 9-Jan
Jan Jan Jan Jan
Jan Jan 5-Jan Jan
Jan Jan 2-Jan Jan 6 7 8
Manufacture custom hardware
Assemble
Test
Activity #
Legend
Jan 30-Jan 15-Jan 30-Jan
Jan 9-Jan 30-Jan 9-Jan
5 9-Jan Jan 9-Jan Jan
Duration ES date EF date LS date LF date
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

13. Example of Laddering Using Finish-to-Start Relationship
Figure 4-15
Trench 1/3
Lay pipe 1/3
Refill 1/3
AON network
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

14. Finish-to-Start Relationship
Figure 4-16 X Y
Lag 2
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

15. Start-to-Start Relationship
Figure 4-17
Activity M
Activity N
Activity P
Activity Q
Lag 5 A B
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

16. Use of Lags to Reduce Detail
Figure 4-18
Trench 1 mile
Lay pipe 1 mile
Lag 3
Refill 1 mile
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

17. Finish-to-Finish Relationship
Figure 4-19
Lag 4
Prototype
Testing
Irwin/McGraw-Hill
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18. Start-to-Start Relationship
Figure 4-20
Lag 3
System documentation
Testing
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©The McGraw-Hill Companies, 2000

19. Combination Relationships
Figure 4-21
Lag 2
Code
Debug
Lag 4
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©The McGraw-Hill Companies, 2000

20. Network Using Lags Irwin/McGraw-Hill Figure 4-22
Legend
Lag 5
Lag 10
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000

21. Hammock Activity Example
Figure 4-23
Legend
Irwin/McGraw-Hill
©The McGraw-Hill Companies, 2000