The standard for project management

  

Part 1 - Guide

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Milestone charts. 

These charts are similar to bar charts, but only identify the scheduled start or completion of 

major deliverables and key external interfaces. An example is the milestone schedule portion of Figure 6-21.

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Project schedule network diagrams.

 These diagrams are commonly presented in the activity-on-node 

diagram format showing activities and relationships without a time scale, sometimes referred to as a pure 

logic diagram, as shown in Figure 6-11, or presented in a time-scaled schedule network diagram format that 

is sometimes called a logic bar chart, as shown for the detailed schedule in Figure 6-21. These diagrams, with 

activity date information, usually show both the project network logic and the project’s critical path schedule 

activities. This example also shows how each work package is planned as a series of related activities. 

Another presentation of the project schedule network diagram is a time-scaled logic diagram. These diagrams 

include a time scale and bars that represent the duration of activities with the logical relationships. They are 

optimized to show the relationships between activities where any number of activities may appear on the 

same line of the diagram in sequence. 

Figure 6-21 shows schedule presentations for a sample project being executed, with the work in progress reported 

through as-of date or status date. For a simple project schedule model, Figure 6-21 reflects schedule presentations in 

the forms of (1) a milestone schedule as a milestone chart, (2) a summary schedule as a bar chart, and (3) a detailed 

schedule as a project schedule linked bar chart diagram. Figure 6-21 also visually shows the relationships among the 

different levels of detail of the project schedule.

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Project Schedule  Time Frame

Period 5

Period 1

Period 2

Period 3

Activity

Identifier

1.1.MB

Begin New Product Z

Period 4

Calendar

units

Calendar

units

Calendar

units

Complete Component 1

Complete Component 2 

Finish New Product Z

0

0

0

0

Activity Description

Project Schedule  Time Frame

Period 5

Period 1

Period 2

Period 3

Activity

Identifier

1.1.MB

0

120

67

20

33

14

0

53

14

28

11

0

53

14

32

0

7

0

Period 4

Activity Description

1.1.1.M1

1.1.2.M1

1.1.3.MF

Complete Integration of Components 1 & 2

0

1.1.3.M1

Project Schedule  Time Frame

Period 5

Period 1

Period 2

Period 3

Activity

Identifier

1.1

Develop and Deliver New Product Z

Period 4

Work Package 1: Component 1 

Work Package 2: Component 2 

Work Package 3: Integrated Components 1 and 2

120

67

53

53

Activity Description

1.1.1

1.1.2

1.1.3

Milestone Schedule

Data Date

Data Date

Detailed Schedule

1.1.1.T

1.1

1.1.1

1.1.1.D

1.1.1.B

1.1.2.T

1.1.1.M1

1.1.2

1.1.2.D

1.1.2.B

1.1.3.M1

1.1.2.M1

1.1.3

1.1.3.G

1.1.3.T

Data Date

SS

FS

1.1.3.P

1.1.3.MF

Summary Schedule

Begin New Product Z

  Develop and Deliver Product Z

  Work Package 1: Component 1

Design Component 1

Build Component 1

Test Component 1

 

Complete Component 1

  Work Package 2: Component 2

Design Component 2

Build Component 2

Test Component 2

Complete Component 2

  Work Package 3: Integrated Components 1 and 2

Integrate Components 1 and 2 as Product Z

Complete Integration of Components 1 and 2

Test Integrated Components as Product Z

Deliver Product Z

Finish New Product Z