Critical Path Analyzer

Overview

The Critical Path Analyzer skill performs comprehensive Critical Path Method (CPM) analysis on project schedules. It calculates forward and backward passes to determine early/late dates, identifies float values, and highlights the critical path - the longest sequence of dependent activities that determines the minimum project duration.

Capabilities

Core CPM Calculations

• Calculate forward pass (early start/finish dates)
• Calculate backward pass (late start/finish dates)
• Determine total float and free float
• Identify critical path activities
• Detect near-critical paths (activities with low float)

Advanced Analysis

• Perform what-if analysis for schedule compression
• Calculate schedule risk exposure
• Generate critical path reports and visualizations
• Support multiple calendar assignments
• Handle complex dependency relationships (FS, SS, FF, SF with lag/lead)

Schedule Optimization

• Identify crashing candidates based on cost-duration tradeoffs
• Recommend fast-tracking opportunities
• Calculate compression costs and benefits
• Model resource-constrained critical path

Usage

Input Requirements

• Activity list with unique identifiers
• Activity durations
• Predecessor/successor relationships with dependency types
• Optional: Activity calendars
• Optional: Resource assignments for resource-constrained analysis

Output Deliverables

• Critical path activity list
• Float analysis report (total float, free float per activity)
• Near-critical path identification
• Network diagram with critical path highlighted
• Schedule risk metrics

Example Use Cases

1. Schedule Development: Identify critical path during initial planning
2. Schedule Recovery: Find compression opportunities when behind schedule
3. Risk Assessment: Analyze schedule risk through float analysis
4. What-If Analysis: Model schedule impacts of changes

Process Integration

This skill integrates with the following processes:

• Schedule Development and Critical Path Analysis
• earned-value-management.js
• Program Dependency Management
• Risk Planning and Assessment

Dependencies

• Network diagram algorithms
• Scheduling mathematics libraries
• Graph traversal algorithms
• Date/time calculation utilities

Related Skills

• SK-001: Gantt Chart Generator
• SK-003: Resource Leveling Optimizer
• SK-019: Dependency Mapper