Construction Machinery & Attachments worked example

Attachment Cycle Output at 56% jobsite cycle efficiency: a worked example

Suppose jobsite cycle efficiency falls to 56%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Estimate hourly attachment output from completed cycles, runtime, and jobsite efficiency.

The inputs for this scenario

  • Completed attachment cycles or passes: 430 cycles (held at the documented default)
  • Attachment runtime: 6.5 hr (held at the documented default)
  • Jobsite cycle efficiency: 56 % (the input this scenario stresses; the baseline uses 78)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw attachment cycles per hour = completed attachment cycles or passes รท attachment runtime.
  • effective attachment cycle output works out to 37.05 cycles / hr at these inputs, and this is the headline figure for the scenario.
  • raw attachment cycles per hour works out to 66.15 cycles / hr at these inputs.
  • jobsite cycle efficiency works out to 56 % at these inputs.
  • attachment runtime works out to 6.5 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where jobsite cycle efficiency sits at 78% and the headline result is 51.6 cycles / hr, this scenario comes in 28.21% below the baseline at 37.05 cycles / hr.
  • It computes effective cycles per hour by dividing completed cycles by runtime to get a raw rate, then derating that rate by a jobsite efficiency factor. When the numbers land here, the stressed input is the lever to work; the walkthrough above shows exactly how much each output recovers as it climbs back toward the baseline.

Results at a glance

  • effective attachment cycle output: 37.05 cycles / hr (headline result)
  • raw attachment cycles per hour: 66.15 cycles / hr
  • jobsite cycle efficiency: 56 %
  • attachment runtime: 6.5 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Attachment Cycle Output calculator, set jobsite cycle efficiency to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.