What is the importance of work break down in construction project?

Work Breakdown Structure is deliverable oriented hierarchical decomposition of the work to be executed by the project team

The WBS visually defines the scope into manageable chunks that a project team can understand, as each level of the work breakdown structure provides further definition and detail.

A work breakdown structure lets project managers plan their work more efficiently. A project is characterized by time-limited activities and is assigned fixed time frames and costs. When it is finished, a project must fulfill the stakeholder needs it was designed to address. The project management has to plan for the schedule, the fixed costs and the functional completeness of the project and assign responsibilities. The WBS helps make this planning consistent and provides for effective project execution.

WBS is important to track the progress in the project schedule. 

WBS reflects BOQ summary items. So the WBS can be used to track BOQ for physical progress and cost.

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