The document outlines the concept and implementation of a Work Breakdown Structure (WBS) in construction cost engineering, detailing its definition, levels, and types, including deliverable-based and phase-based structures. It emphasizes the need for clear organization of project tasks into manageable components, assisting in project planning, budgeting, and performance tracking. Additionally, it provides guidelines on creating a WBS, including critical elements such as deliverables, acceptance criteria, and risk management.

1. Construction Cost Engineering:
Work Breakdown
Structure (WBS)
NCE_4402

2. Work Breakdown Structure
1. Define Work Breakdown Structure (WBS)
2. Identify the levels of Work Breakdown Structure (WBS)
3. Identify the types of Work Breakdown Structure (WBS)
At the end of the lesson, the learner will be able to:

6. In planning a project, the project manager must structure the work
into smaller elements that are:
Independent
Integratable
Measureable

7. Work Breakdown
Structure (WBS)
Is a product-oriented family tree subdivision of
the materials, activities, and data required to
produce the end product.

8. Work Breakdown
Structure (WBS)
Preparation of the WBS also considers other
areas that require structured data, such as
scheduling, configuration management,
contract funding, and technical performance
parameters.

9. Level of WBS
Total Project
Project
Task
Subtask
01
02
03
04
Work Package
05
Level of Effort
06
Managerial
Levels
Technical
Levels

10. Level of WBS
Total Project
Project
Task
01
02
03
Managerial
Levels
Used for the
authorization and
release of all
work
Budgets are
prepared
Schedules are
prepared

11. Types of WBS
Deliverable-Based Work
Breakdown Structure
Phase-Based Work
Breakdown Structure

12. Deliverable-Based Work
Breakdown Structure
01
Clearly demonstrates the relationship between the project deliverables
and the scope.
• Interim Deliverables
• Ultimate Deliverables

13. Deliverable-Based Work Breakdown Structure Sample
Construction
of a House
Work = 100%
Budget = Php 2,000,000.00
Foundation
Work = 24%
Budget = 480,000.00
Excavation
Work = 18.2%
Budget = 364,000.00
Steel
Works
Work = 5.8%
Budget = 116,000.00
External
Work = 30.4%
Budget = 608,000.00
Masonry
Works
Work = 16.2%
Budget = 324,000.00
Building
Finishes
Work = 14.2%
Budget = 284,000.00
Internal
Work = 45.60%
Budget = 912,000.00
Electrical
Work = 11.8%
Budget = 236,000.00
Plumbing
Work = 33.8%
Budget = 676,000.00

14. Phase-Based Work
Breakdown Structure
02
Is also referred to as Verb-oriented, Activity or Task-oriented, or
Process-oriented WBS. The project deliverables are defined in terms of
actions to be taken to attain the final product.

15. Phase-Based Work Breakdown Structure Sample
Construction
of a House
Design
Land
Acquisition
Permits
Detailed
Design
Bidding
Procurement
Electrical
Plumbing
HVAC
Construction
Structural
Interior
Finishing
Exterior
Finishing
Roofing
Works
Quality
Assurance
Inspection
Masonry Work
Building
Finishes
Turnover
Punchlisting
Closing

16. COMMON FRAMEWORK OF A WBS
1. The total program can be described as a summation of subdivided
elements.
2. Planning can be performed.
3. Costs and budgets can be established.
4. Time, cost, and performance can be tracked.
5. Objectives can be linked to company resources in a logical manner.
6. Schedules and status-reporting procedures can be established.
7. Network construction and control planning can be initiated.
8. The responsibility assignments for each element can be established.

17. How to Make a Work Breakdown Structure
Gather
Documents
1 Identify Key
Personnel
2 Define
Level 1
Elements
3
Decompose
(Breakdown)
Elements
4 Create
WBS
Dictionary
5 Create
GANTT
Chart
Schedule
6

18. WBS
Dictionary
No. Item Code Description
1 WBS Code Enter the WBS Title and identify it as a Work Package, Planning and/or Control Account.
2 Responsible
Organization/
Individual
Name the single organization, group or individual that has been assigned sole responsibility for
making sure the Work Package is completed. Include contact information.
3 Description Define Work Package boundaries. Frame the scope content so that it is clear what scope is
included and excluded. If it is a Planning Package, describe the known and unknown scope.
4 Deliverables Identify the product, service or results created when all of the work in this Work Package is
complete. Include any critical intermediate deliverables.
5 Acceptance
Criteria
Describe the functional and physical requirements in order to meet customer expectations and
quality requirements. Include any unique approvals required for acceptance.
6 Budget Designate the budget for this Work Package, plus any critical resource information and
assumptions.
7 Milestones List any Start Dates, End Dates, Intermediate Milestones, Interdependencies, Constraints and
any assumption for the deliverables.
8 Risks Include any known threats and opportunities with response strategies.
9 Additional
Information
Describe any additional information, such as references, related work packages, etc.
10 Approvals: Date and Revision Date

23. The work breakdown structure can be used to
provide the basis for:
Responsibility
matrix
Network
scheduling
Costing Risk analysis
01 02 03 04
Organizational
structure
Coordination
of objectives
Control
(including contract
administration)
05 06 07

24. Helpful Tips in Creating WBS
Too much detail
can be
intimidating and
can render the
schedule
useless as a
management
tool. Participants
will ignore it.
With too little
detail, tasks are
omitted. Vague
schedules
cannot be used
as a
management
tool.
More detail is
required at
extremely critical
stages or
sequences.
Tasks that lead
to a milestone
should be
detailed so
nothing is
omitted that
might prevent
the milestone
from occurring.
Tasks that are
performed by
owners,
inspectors, and
design team
membersshould
also be listed.