The short answer
What does concrete sample traceability establish?
Sample traceability connects a stated sampling event and its identifiers to the represented concrete, placement record, and associated specimens or tests. It establishes the identity chain documented by those records; it does not, by itself, prove correct sampling, specimen handling, or acceptance.
Do not collapse four identities into one label
A delivery ticket, a placement identifier, a sampling event, and a specimen identifier describe different things. Record their relationship explicitly. A mix description shared by several deliveries is not a unique delivery identifier, and a test report with a project name alone cannot locate the represented work.
- Delivery or batch identifier
- Placement location and sampling time
- Sample identifier and associated specimen identifiers
Reconcile the records before interpreting the number
Compare the supplied ticket, field log, and laboratory record. Investigate conflicting dates, duplicated sample identifiers, and changed locations through the authorized record process. Preserve the original entry and the basis for any correction rather than silently replacing a conflicting value with the most plausible one.
- Match identifiers across independent records
- Keep corrections attributable and explainable
- Treat an unresolved location as unknown, not verified
Identity evidence is not procedure evidence
A complete identity chain can coexist with an unverified procedure. Sampling, testing, specimen preparation, curing, and transport need their own applicable requirements and records. ACI Grade I preparation includes actual performance requirements; reading this example cannot replace apparatus practice or the authorized procedures.
- Separate identity gaps from procedural gaps
- Use current authorized materials for methods
- Route acceptance questions to the responsible project parties
What each record establishes
| Record | Can establish | Does not establish |
|---|---|---|
| Unique ticket number | A delivery identity in the supplied packet | Which placement received every portion |
| Sample-to-specimen cross-reference | The recorded identity relationship | Proper specimen handling |
| Laboratory result | A reported result for its stated specimen | Acceptance of an unidentified placement |
Fictional practice packet
Identify the gap before reading the response.
Fictional packet: sample C-17 appears on a field log for placement P-04. The laboratory transmittal lists the same sample under P-05. Both placements occurred that day. No correction record is attached.
What can be stated, what remains unknown, and which evidence would resolve it?
Compare your response
Flag the P-04/P-05 identity conflict. Request the original sampling record, delivery cross-reference, and an attributable reconciliation. Preserve the result as reported but do not assign it to either placement solely because one location seems more likely.
What would change the decision?
A documented reconciliation from the authorized record owner could establish the intended placement association. Procedure compliance and acceptance still need separate evaluation.
Self-comparison only. No score, qualification, or field authorization is issued.
Questions and limits
Does a traceable sample establish that a pour passed?
No. Identity, test validity, applicable criteria, and the authorized acceptance decision are separate questions.
Sources & boundaries
What supports this page
Original HoldPoint editorial guidance. Content updated 2026-11-03. This is not independent expert signoff, an official exam, or a field acceptance standard.
- ACI Concrete Field Testing Technician—Grade I program
Supports: Seven ASTM methods/practices; 55-item, one-hour closed-book written examination; 70% overall and 60% per method; actual performance examination; five-year certification and both exams for recertification.
Limit: Use the linked JTA and current workbook for procedural details. Fees, available dates, and equipment practice must be confirmed with a sponsoring group.
Source checked 2026-10-02