Estimate Activities Resources

This article contains most of the important information you need to know about Estimate Activity resources in order to answer questions related to this topic in the PMP Exam, I recommend you review this type of articles 1 week before your exam date, all information mentioned are based on PMBOK Guide 6th edition and PMP Exam Prep 9th edition for Rita Maclhy’s, ITTO refers to Inputs, Tools & Techniques and outputs.

This process is a part of Planning Process group and Recourses Management Knowledge Area with the following ITTO’s


  1. Project Management Plan ( Recourses Management plan ,Scope Baseline
  2. Project Documents (Activity List , Activity Attributes, Assumption log , Cost estimates ,Resources Calendar , Risk Register)
  3. Enterprise environmental factors
  4. Organizational Process assets

Tools & Techniques:

  1. Expert Judgment
  2. Meetings
  3. Bottom Up estimating
  4. Analogues estimating
  5. Parametric estimating
  6. Data Analysis ( Alternative Analysis )
  7. PMIS



  1. Resources Requirement
  2. Resource Breakdown structure
  3. Basis of estimates
  4. Project Document Updates ( Activity attributes , Assumption log , lessons learned register )


  • It’s the process of estimating team recourses and define the type and quantities of materials , equipments and supplies necessary to complete project work .
  • In this process you are required to determine the type and quantity of resources required for each activity.
  • Resource Breakdown Structure (RBS): Hierarchy image that organizes the planned resources by their category and type.
  • In this process the human resources are matched into activities.
  • Recourses Calendar identifies the working days , shifts , start and end of normal business hours , weekends and public holidays when each specific recourse is available .
  • Recourses Requirements identifies the types and quantities of recourses required for each work package or activity in a work package and can be aggregated to determine the estimated recourses for each work package , WBS branch and the project as a whole .

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