Develop Scope Structure 

Scope Structure is the hierarchical and documented representation of the total scope of work, combining both:

• Predictive elements (Scope Baseline, WBS, WBS Dictionary)

• Adaptive elements (User Stories, Product Backlog) - Will discuss about these in the section 'Agile  Project Management'
  
  

It answers:

• What work needs to be done?

• How is it organized?

• How will it be delivered incrementally?
  
  

Scope Baseline

The Scope Baseline is the approved version of the scope that serves as a reference for comparison and control and comprises of; 

• Project Scope Statement

• Work Breakdown Structure (WBS)

• WBS Dictionary
  
  

These three together form the foundation for scope control.

Work Breakdown Structure (WBS)

The WBS is a hierarchical decomposition of the total project scope into smaller, manageable components.

It follows the principle: “Break the work until it becomes manageable and assignable”

100% Rule (Most Important Principle)

Definition

The 100% Rule states that:

The WBS must include 100% of the work defined in the project scope, including all deliverables—internal, external, and project management work.

Key Aspects

• Covers everything in scope

• Includes project management activities

• No extra work outside WBS
  
  

8–80 Rule (Decomposition Guideline)

The 8–80 Rule suggests that:

A work package should ideally take between 8 and 80 hours of effort

Purpose

Ensures work is neither too large nor too small

• If the work is more than 80 hours,  it becomes too difficult to track and results in poor estimation 

• If the work is smaller than 8 hours, it results in too much micro-management
  
  

List Structure 

1. Solar Power Plant Project

   1.1 Site Preparation

   1.2 Procurement

       1.2.1 Solar Panels

       1.2.2 Inverters

   1.3 Installation

   1.4 Testing & Commissioning

Tree Structure 

                Solar Plant

              /      |      \

     Site Prep   Procurement   Installation

                   /     \

             Panels     Inverters

Levels in WBS 

1. Level 1 → Project

2. Level 2 → Major Deliverables

3. Level 3 → Sub-deliverables

4. Level 4 → Work Packages

Lowest level = Work Package (manageable unit)

Define Scope → Create WBS → Develop Schedule → Estimate Cost → Execute & Control