What is a Resource Breakdown Structure (RBS) and how does it relate to the WBS?

What is a Resource Breakdown Structure (RBS) and how does it relate to the WBS?

• A. RBS categorizes resources needed; it is independent of WBS.
• B. RBS categorizes resources needed, aligning resource types with the WBS deliverables to facilitate assignment and costing.
• C. RBS lists only supplier contracts for each WBS element.
• D. RBS details communication channels per WBS deliverable.

Answer: (B)

Resource Breakdown Structure is a hierarchical view of the resources needed to deliver the project’s outcomes, organized by resource type such as people, equipment, materials, and facilities. It is built to align with the WBS deliverables, so each WBS element has the resources required to complete it clearly mapped to it. This alignment lets you assign responsibilities, plan procurement, and estimate costs more accurately, because you can see exactly what is needed for every deliverable and roll those needs up into the overall budget. For example, a WBS element like a foundation would have concrete, rebar, formwork, labor hours, and the equipment to pour and finish, all linked to that deliverable. By connecting resources directly to the corresponding WBS elements, you can track who or what is needed when, and how much it will cost, which supports both scheduling and budgeting. This approach isn’t independent of the WBS, nor is it limited to supplier contracts or to communication channels. The purpose is to detail the resources required for each deliverable so resource planning and costing are integrated with the WBS structure.

Resource Breakdown Structure is a hierarchical view of the resources needed to deliver the project’s outcomes, organized by resource type such as people, equipment, materials, and facilities. It is built to align with the WBS deliverables, so each WBS element has the resources required to complete it clearly mapped to it. This alignment lets you assign responsibilities, plan procurement, and estimate costs more accurately, because you can see exactly what is needed for every deliverable and roll those needs up into the overall budget.

For example, a WBS element like a foundation would have concrete, rebar, formwork, labor hours, and the equipment to pour and finish, all linked to that deliverable. By connecting resources directly to the corresponding WBS elements, you can track who or what is needed when, and how much it will cost, which supports both scheduling and budgeting.

This approach isn’t independent of the WBS, nor is it limited to supplier contracts or to communication channels. The purpose is to detail the resources required for each deliverable so resource planning and costing are integrated with the WBS structure.