Creating Gantt Charts, Network Diagrams, and Dashboards

Lecture Notes: Creating Gantt Charts, Network Diagrams, and Dashboards

Introduction

Scheduling isn’t just about setting dates — it’s about visualizing how activities connect, progress, and perform.
Tools like Gantt charts, network diagrams, and dashboards make this visible, helping project teams plan, communicate, and control effectively.

These visuals turn complex timelines into understandable, actionable insights.

 Gantt Charts

a. Definition

A Gantt chart is a bar chart that displays project activities against time.
It shows the start and finish dates of tasks, their duration, and how they overlap or depend on each other.

b. Key Features

• Horizontal time scale: represents the project timeline.
• Vertical list of activities: each row is a task or milestone.
• Bars: indicate the duration of each activity.
• Dependencies: shown with connecting lines (e.g., finish-to-start).
• Milestones: represented as diamonds (major events or deliverables).

c. Benefits

• Clear visualization of the project schedule.
• Helps track progress and identify delays.
• Communicates timelines easily to stakeholders.
• Supports resource allocation and monitoring.

d. Tools for Creating Gantt Charts

• Microsoft Project – full-featured with dependencies and baselines.
• Smartsheet / Excel – for simpler, shareable versions.
• Trello / Asana / ClickUp – modern tools with Gantt-like timelines.

e. Limitations

• Complex projects can make charts cluttered.
• Doesn’t easily show interdependencies beyond direct links.
• Requires updates to stay relevant.

Network Diagrams

a. Definition

A Network Diagram visually maps out the logical sequence of project activities — showing dependencies and flow from start to finish.
It is essential for Critical Path Method (CPM) analysis and for understanding how tasks interrelate.

b. Types of Network Diagrams

1. Precedence Diagramming Method (PDM):
   • The most widely used method.
   • Represents activities as nodes (boxes) connected by arrows.
   • Supports all dependency types: Finish-to-Start, Start-to-Start, etc.
2. Arrow Diagramming Method (ADM):
   • Older method.
   • Uses arrows to represent activities and nodes as events.
   • Limited to Finish-to-Start relationships.

c. Uses of Network Diagrams

• Identifies critical path and total float.
• Reveals parallel paths and bottlenecks.
• Helps visualize dependencies for risk management.

d. Steps to Create a Network Diagram

1. List all activities (from WBS).
2. Define relationships between activities.
3. Draw nodes and connect them based on dependencies.
4. Calculate earliest start/finish and latest start/finish times.
5. Identify the critical path — tasks with zero float.

e. Benefits

• Clarifies logic and sequencing.
• Aids in schedule optimization.
• Provides analytical basis for schedule compression (crashing, fast-tracking).

 Dashboards

a. Definition

A project dashboard is a visual display of key performance indicators (KPIs), progress, and risks.
It gives stakeholders a real-time overview of project health.

b. Typical Dashboard Components

• Schedule performance: % complete, milestone progress.
• Cost performance: budget vs actual, cost variance.
• Quality metrics: defects, rework, or testing results.
• Risks/issues: open vs resolved items.
• Resource utilization: workload distribution.

c. Tools for Building Dashboards

• Microsoft Project / Power BI: integrates schedule and cost data.
• Primavera P6 Analytics: advanced reporting for complex projects.
• Smartsheet / Monday.com / Jira: real-time visual dashboards.
• Excel: custom dashboards using charts and formulas.

d. Benefits

• Supports data-driven decisions.
• Enables quick insight into problem areas.
• Enhances communication with stakeholders.
• Tracks overall project performance visually.

e. Best Practices for Dashboards

• Keep it simple: show only relevant KPIs.
• Use visual clarity: charts, gauges, and status colors.
• Update automatically when possible.
• Align metrics with project objectives.

 Comparing the Three Tools

 Integration Example

In a construction project:

• The network diagram defines the critical sequence of design, procurement, and build activities.
• The Gantt chart shows the timeline of those activities with milestones.
• The dashboard presents progress and cost performance to stakeholders weekly.

Together, they form a complete view of planning, execution, and control.

Conclusion

Gantt charts, network diagrams, and dashboards are complementary scheduling tools.

• Gantt charts show when things happen.
• Network diagrams explain how things depend on each other.
• Dashboards summarize how well the project is performing.

When used together, they transform raw data into a story — one that keeps the project on time, on budget, and in focus.