Abrasive Blasting, Shot Peening & Surface Prep worked example

Blast Room Throughput at 59% productive booth utilization: a worked example

Suppose productive booth utilization falls to 59%. This page works the full calculation at that level so you can see exactly which result moves and by how much. Calculate accepted blast room output in square feet per hour from completed area, room hours, and booth utilization.

The inputs for this scenario

  • Accepted blasted area: 3,200 sq ft (held at the documented default)
  • Occupied blast room time: 10 hr (held at the documented default)
  • Productive booth utilization: 59 % (the input this scenario stresses; the baseline uses 82)

Working through the calculation

  • The calculation starts from the formula this tool documents: Raw throughput = accepted blasted area รท occupied blast room time.
  • Effective room throughput works out to 189 sq ft / hr at these inputs, and this is the headline figure for the scenario.
  • Raw blast rate works out to 320 sq ft / hr at these inputs.
  • Productive booth utilization works out to 59 % at these inputs.
  • Room time works out to 10 hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where productive booth utilization sits at 82% and the headline result is 262 sq ft / hr, this scenario comes in 28.05% below the baseline at 189 sq ft / hr.
  • It computes effective blast room throughput in accepted square feet per hour by dividing accepted blasted area by occupied room time, then derating for the share of that time the booth is productively blasting. 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 room throughput: 189 sq ft / hr (headline result)
  • Raw blast rate: 320 sq ft / hr
  • Productive booth utilization: 59 %
  • Room time: 10 hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Blast Room Throughput calculator, set productive booth utilization to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.