I'm fairly new to this. I'm trying to build a WBS for communications equipment installation. This requires things like licenses, electrical conduit, parts ordering, and outsourcing to other organizations. It seems that a deliverable oriented WBS would be best for the project, but once I get to the 3rd layer, it seems natural to the components of the deliverable into the tasks necessary to produce the components. Would a WBS that mixes types in this way work well, or will I run into problems when converting this to a network and project schedule?

1 Answer 1


A product oriented WBS would have products on top, broken down to its manageable sized components, and then activities below it. I define the work package to be the lowest level of product; the activities below it enable size estimation. You should not have any issues scheduling a WBS such as this.

  • Is it any problem that some of my lowest level boxes are a mix of tasks and products?
    – Frank
    Mar 3, 2020 at 19:23
  • Not in my opinion Mar 4, 2020 at 11:37

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