Process Skids, Modular Equipment & Packaged Plants worked example

Documentation Hours with documents or data packages of 40 items: a worked example in process skids, modular equipment & packaged plants

This worked example runs the documentation hours numbers for a tougher week than the baseline: documents or data packages of 40 items instead of the typical 80 items. Estimate total documentation labor hours for Process Skids, Modular Equipment & Packaged Plants from the number of items and the hours each takes.

The inputs for this scenario

  • Documents or data packages: 40 items (the input this scenario stresses; the baseline uses 80)
  • Hours per document: 1.5 hr (held at the documented default)
  • Documenters assigned: 3 people (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Total labor hours = work items × hours per item.
  • Total labor hours works out to 60 hr at these inputs, and this is the headline figure for the scenario.
  • Duration with crew works out to 20 hr at these inputs.
  • Work items works out to 40 items at these inputs.
  • Hours per item works out to 1.5 hr / item at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where documents or data packages sits at 80 items and the headline result is 120 hr, this scenario comes in 50% below the baseline at 60 hr.
  • Use it at proposal time to price the documentation line, and again at close-out to staff the turnover package against the acceptance deadline. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Total labor hours: 60 hr (headline result)
  • Duration with crew: 20 hr
  • Work items: 40 items
  • Hours per item: 1.5 hr / item

Run it with your numbers

  • To rerun this with your own numbers, open the live Documentation Hours calculator, set documents or data packages to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.