Abrasive Blasting, Shot Peening & Surface Prep worked example

Blast Room Throughput at 94% productive booth utilization: a worked example

Push productive booth utilization up to 94% and the picture changes. This example computes every intermediate figure at that operating point. you need a defensible sq ft/hr rate for a blast room schedule, staffing plan, or quote basis

The inputs for this scenario

  • Accepted blasted area: 3,200 sq ft (unchanged)
  • Occupied blast room time: 10 hr (unchanged)
  • Productive booth utilization: 94 % (raised for this scenario; the documented default is 82)

Working through the calculation

  • Applying the documented formula (Raw throughput = accepted blasted area รท occupied blast room time) to the inputs above produces each figure below.
  • At this operating point the engine returns 301 sq ft / hr for effective room throughput, the number this scenario is built around.
  • At this operating point the engine returns 320 sq ft / hr for raw blast rate.
  • At this operating point the engine returns 94 % for productive booth utilization.
  • At this operating point the engine returns 10 hr for room time.

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 14.63% above the baseline at 301 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. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • Effective room throughput: 301 sq ft / hr (headline result)
  • Raw blast rate: 320 sq ft / hr
  • Productive booth utilization: 94 %
  • Room time: 10 hr

Run it with your numbers

  • Every input above is editable in the live Blast Room Throughput calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.