Process Skids, Modular Equipment & Packaged Plants worked example

Module Shipping Cube at 65% transport-ready availability: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop transport-ready availability to 65%, then walk the calculation through step by step. Module Shipping Cube estimates how many process-skid modules a fabrication yard can actually get onto trailers per shift once load-out delays, crane wait, and securement rework are factored in.

The inputs for this scenario

  • Modules loaded per shipping window: 1,200 units (held at the documented default)
  • Loading and securement window: 8 hr (held at the documented default)
  • Transport-ready availability: 65 % (the input this scenario stresses; the baseline uses 90)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw module shipping cube = completed output รท runtime.
  • Effective throughput works out to 97.5 units at these inputs, and this is the headline figure for the scenario.
  • Raw throughput works out to 150 units at these inputs.
  • Efficiency works out to 65 % at these inputs.
  • Runtime works out to 8 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where transport-ready availability sits at 90% and the headline result is 135 units, this scenario comes in 27.78% below the baseline at 97.5 units.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to transport-ready availability, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It assumes availability is a flat percentage across the window; a single oversize-permit delay or crane breakdown can drop real throughput well below the effective figure for that day.

Results at a glance

  • Effective throughput: 97.5 units (headline result)
  • Raw throughput: 150 units
  • Efficiency: 65 %
  • Runtime: 8 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Module Shipping Cube calculator, set transport-ready availability to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.