• Author / Uploaded
• Lim Kaixian

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Work Breakdown Structure • Technique for defining and organizing the total scope of a project, using a hierarchical tree structure • It generate the task (job) list for the projects • Can be activity-oriented or deliverable-oriented • The first two levels of the WBS (the Level 1 and Level 2) define a set of planned outcomes that collectively and exclusively represent 100% of the project scope • WBS elements to be numbered sequentially to reveal the hierarchical structure. For example 1.3, 1.3.2 , 1.3.2.3, etc. •For project scheduling, use activities from level 3 or higher

Example WBS : airport complex Level 3

Level 2

Level 1

1.1 Site preparation and infra works 1.2 Runway

1. Airport complex

1.1.1 Site clearance 1.1.2 Earthworks 1.1.3 Infra works 1.2.1 Runway base course 1.2.2 Lay premix on runaway 1.2.3 Runaway markings 1.2.4 Runaway lightings

1.3 Terminal building 1.4 Control Tower

1.5 Fire Dept. Building 1.6 Airport Hangar 1.7 Fuel Depot

1.3.1 Slope Protection 1.3.2 Piling 1.3.3 Superstructure 1.3.4 Finishing works 1.4.1 Piling 1.4.2 Superstructure 1.4.3 Finishing works

Example WBS : car production process Level 3

Level 2 1.1 Body Shop Level 1 1. Car production

1.2 Paint Shop

1.3 Assembly shop

1.1.1 Main skeleton 1.1.2 Platform

1.2.1 Surface preparation 1.2.2 Undercoating 1.2.3 Painting

1.3.1 Engine assembly 1.3.2 Door assembly 1.3.3 cockpit installation 1.3.4 Accessories

Example WBS : Painting a Room 1.

Prepare materials 1.1 Buy paint 1.2 Buy brushes, rollers, gloves, wallpaper remover, etc 2. Prepare room 2.1 Remove detachable decorations & old wallpaper 2.2 Cover floor with newspaper, …. 2.3 Cover electrical outlet/switches with tape 2.4 Cover furniture with sheets 3. Paint the room 4. Clean up the room 4.1 Dispose or store left over paint 4.2 Clean brushes, rollers, etc 4.3 Dispose used newspapers 4.4 Remove covers