Asphalt, Road Materials & Paving Products worked example

Asphalt Quality Sample Frequency at 99% sampling crew availability: a worked example

Push sampling crew availability up to 99% and the picture changes. This example computes every intermediate figure at that operating point. a QC technician needs to staff mix sampling, cores, gradation checks, binder tests, or density verification for a paving job

The inputs for this scenario

  • QC samples required per sublot: 2 units / cycle (unchanged)
  • Sublots or paving runs scheduled: 20 cycles (unchanged)
  • Sampling crew availability: 99 % (raised for this scenario; the documented default is 95)
  • Specification sampling validity rate: 100 % (unchanged)

Working through the calculation

  • Applying the documented formula (Planned asphalt QC samples = required samples per sublot × sublots or runs scheduled) to the inputs above produces each figure below.
  • At this operating point the engine returns 39.6 samples for usable asphalt qc sample capacity, the number this scenario is built around.
  • At this operating point the engine returns 40 samples for planned asphalt qc samples.
  • At this operating point the engine returns 0.4 samples for samples lost to crew/access limits.
  • At this operating point the engine returns 0 samples for samples lost to invalid or missed checks.

How this compares with the baseline

  • Against the tool's baseline example, where sampling crew availability sits at 95% and the headline result is 38 samples, this scenario comes in 4.21% above the baseline at 39.6 samples.
  • It computes usable asphalt QC sample capacity by multiplying planned samples (per-sublot frequency x scheduled sublots) by crew availability and the rate of valid, spec-compliant checks. 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

  • Usable asphalt QC sample capacity: 39.6 samples (headline result)
  • Planned asphalt QC samples: 40 samples
  • Samples lost to crew/access limits: 0.4 samples
  • Samples lost to invalid or missed checks: 0 samples

Run it with your numbers

  • Every input above is editable in the live Asphalt Quality Sample Frequency calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.