12.2 Final Week and Test-Day Checklist

ACI Concrete Field Testing Technician Grade I Study Guide Exam

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1 Orientation: Certification Requirements, Written Exam, Performance Exam, and Study Sources

1.1 Credential Purpose and Official Definition 1.2 Eligibility and the Two-Part Certification Path 1.3 Written Exam Format and Dual Passing Rule 1.4 Performance Exam Format and Grading 1.5 Current Study Sources and CP-1 41st Edition 1.6 Validity, Recertification, and Myth Control

2 JTA, Performance Checklists, Common Fail Points, and Field Mindset

2.1 JTA as the Exam Blueprint 2.2 Written Knowledge Versus Performance Skill 2.3 Performance Checklists and the Six Demonstrations 2.4 Timing, Sequence, and Verbal Description Discipline 2.5 Common Fail Points and Result Recording 2.6 Field Mindset, Exam Habits, and Second Trials

3 ASTM C172: Sampling Fresh Concrete and Field Sample Control

3.1 Representative Sampling Purpose and Exam Role 3.2 Sampling Locations and Middle-Discharge Control 3.3 Composite Sample Timing, Remixing, and Protection 3.4 Sample Size, Large Aggregate, and Wet Sieving 3.5 Sequence With Slump, Temperature, Air, Density, and Specimens 3.6 Performance Exam Verbal Description and Field Habits

4 ASTM C1064 Temperature and ASTM C143 Slump

4.1 ASTM C1064 Purpose, Equipment, and Timing 4.2 Sensor Placement, Stabilization, and Reporting 4.3 Temperature Field Errors and Performance Habits 4.4 ASTM C143 Scope, Equipment, and Setup 4.5 Filling, Rodding, Lifting, and Measuring Slump 4.6 Invalid Slump Results, Reporting, and Integrated Habits

5 ASTM C138: Density, Unit Weight, Yield, and Gravimetric Air

5.1 Purpose, Equipment, and the Calibrated Measure 5.2 Sampling, Filling, and Consolidation Choice 5.3 Strike-Off, Cleaning, Mass, and Density 5.4 Yield, Relative Yield, and Batch Comparison 5.5 Gravimetric Air and Theoretical Density 5.6 Reporting, Validity, and Calculation Traps

6 ASTM C231: Pressure Air Method, Type B Meter, and Aggregate Correction

6.1 Scope, Principle, and When Pressure Air Fits 6.2 Type B Meter Equipment, Calibration, and Setup 6.3 Sampling, Bowl Filling, Consolidation, and Strike-Off 6.4 Type B Sequence: Water, Petcocks, Pressure, and Reading 6.5 Aggregate Correction Factor and Final Air Content 6.6 Reporting, Validity, and Invalid-Result Traps

7 ASTM C173: Volumetric Air Method, Rollameter, Alcohol Correction, and Validity

7.1 Scope, Equipment, and When the Volumetric Method Fits 7.2 Sample, Bowl Filling, Consolidation, and Strike-Off 7.3 Water, Alcohol, Initial Liquid Level, and Sealing 7.4 Inversion, Shaking, Rolling, and Air Release 7.5 Reading Agreement, Out-of-Range Steps, and Invalid Results 7.6 Alcohol Correction, Calculation, Reporting, and Performance Habits

8 ASTM C31: Making and Curing Cylinders and Beams, Initial Curing, and Transport

8.1 Purpose, Sample, Equipment, and Specimen Plan 8.2 Cylinder Molding, Consolidation, Finishing, and Identification 8.3 Beam Molding, Flexural Specimens, and Finishing 8.4 Initial Curing, Protection, Temperature, and Moisture 8.5 Standard Curing, Field Curing, Final Curing, and Interpretation 8.6 Transport, Lab Handoff, Reporting, and Common Failures

9 Integrated Field Workflow: Test Order, Documentation, and Quality Control

9.1 Field Sample to Report Workflow 9.2 Test Order and Parallel Timing 9.3 Documentation and Report Accuracy 9.4 Invalid Results and Retest Decisions 9.5 QA/QC Communication and Acceptance Context 9.6 Contamination, Delays, and Handoff Control

10 Written Exam Strategy: Numerical Values, Calculations, and Category Scoring

10.1 One-Hour Written Exam Pacing 10.2 Category Scoring and the No-Compensation Rule 10.3 High-Yield Numerical Values and Units 10.4 Density, Yield, and Gravimetric Air Calculations 10.5 Air Content Corrections and Validity Checks 10.6 Method-by-Method Practice Plan

11 Performance Exam Strategy: Equipment Setup, Examiner Communication, and Remediation

11.1 Performance Exam Map and Mindset 11.2 Equipment Setup, Station Control, and Safety 11.3 Examiner Communication and Speaking the Work 11.4 One-Step Errors, Timing, and Method Control 11.5 C172 Verbal Description Under Pressure 11.6 Remediation, Retest Planning, and Field Confidence

12 Final Review: Recertification, Career Paths, and Next ACI Credentials

12.1 Two-to-Six Week Final Review Plan 12.2 Final Week and Test-Day Checklist 12.3 CP-1, JTA, and Source Control 12.4 Recertification, Five-Year Cycle, and Re-Exam Requirement 12.5 Career Paths After Field Testing Grade I 12.6 Next ACI Credentials and Growth Map

12.2 Final Week and Test-Day Checklist

Key Takeaways Explain This Topic AI

Both the written and performance exams are closed book; the performance exam requires live demonstration of six methods plus a verbal description of C172 sampling.

Confirm your ACI session details, photo ID, and any sponsor/chapter requirements before exam day.

Drill the performance sequence aloud so each step (equipment check, layers, rodding, strike-off, recording) is automatic.

Recording results correctly and to the proper precision is graded, not just performing the physical steps.

Last updated: June 2026

Two Exams, One Certification

Grade I has two separate exams and you must pass both. The written exam (55 closed-book multiple-choice questions, 60 minutes) tests your knowledge of the standards. The performance exam is also closed book and requires you to physically demonstrate six of the seven required methods plus give a verbal description of Practice C172/C172M (sampling) . Sampling is verbalized rather than performed because it normally requires fresh concrete from a truck, so examiners assess it by description.

The performance exam is graded on both doing and recording . Examiners watch whether you check equipment, build the correct number of layers, rod the correct number of strokes, strike off properly, and then record the result to the correct precision and units . A perfect physical demonstration with a wrongly recorded or rounded value still loses points.

Because both exams are closed book, you cannot bring the standards or any notes to the table. That makes the final week about converting knowledge into automatic recall and muscle memory, not about cramming new facts. A candidate who can recite the slump procedure word for word but freezes when handed the cone under examiner observation has not finished preparing. Rehearse the way you will be tested: out loud, on your feet, with the equipment, narrating each step.

Final-Week Checklist

Confirm logistics: session date, start time, location, and which exams (written, performance, or both) you are scheduled for. Some chapters run them on the same day, others separately.

Photo ID: bring valid government-issued photo identification; ACI verifies identity at check-in.

Performance dry runs: rehearse each of the six demonstrated methods out loud, narrating equipment, layers, strokes, timing, strike-off, and the recorded value and its units.

Verbal C172: practice describing how to obtain a composite sample, combine portions, transport, and begin testing within the time limits.

Precision review: slump to nearest 1/4 in. , temperature to nearest 1 °F (0.5 °C) , air content and unit weight to their reporting precision.

Rest and timing: the written exam averages about 65 seconds per question ; practice a steady pace so you are not rushed at the end.

Sponsor/chapter rules: some chapters require pre-registration, a prerequisite course, or specific arrival times — confirm these with your sponsoring chapter, not just ACI national.

Do not introduce new study material in the last 48 hours. Instead, review your one-page method summaries, re-read the explanations for questions you missed during mocks, and walk through the six performance demonstrations one final time. The goal of the final week is consolidation and confidence, converting knowledge you already have into reliable recall under observation.

• Test-Day Execution
• Written Exam

Read each stem fully; ACI distractors often swap a tolerance or a step from a different test (for example, applying slump's 25 strokes to a layer count from C138). Flag and skip any question that stalls you, then return. Because there is no penalty structure that rewards blanks, answer every question .

Performance Exam

Treat each station like a real jobsite test:

• Step What examiners look for
• Equipment check Correct, clean, calibrated apparatus selected
• Filling Correct number of layers for that test
• Consolidation Correct rod strokes and side taps
• Finishing Proper strike-off / leveling
• Timing Steps completed within the standard's time limits
• Recording Value to correct precision, with units

Narrate as you go; verbalizing the steps both reminds you of the sequence and shows the examiner you understand the standard. If you skip a graded step, finish the station and tell the examiner you would also perform it — but the safest approach is a rehearsed, complete sequence so nothing is omitted. Common point-losers are forgetting to consolidate the correct number of layers, rushing the strike-off, missing the side-tapping in the unit-weight test, and recording the result without units or at the wrong precision. Slow down enough to do each step correctly; the performance exam rewards correctness and completeness, not speed.

Mindset and Common Last-Minute Mistakes

The most reliable predictor of a pass is consistency, not last-minute intensity. Candidates who fail rarely do so because the exam was unfair; they fail because one method slipped below 60%, because they confused two methods' values under pressure, or because nerves disrupted a performance demonstration they had only practiced in their head.

Protect against each of these:

Method confusion: keep your grouping (timing/precision, air content, specimen handling) in mind so you do not transplant a value from one test into another.

Per-method weakness: trust your mock-exam category scores over your gut feeling about which methods are strong.

Performance nerves: rehearse with real equipment and a peer playing examiner so the live setting feels familiar.

Precision slips: practice writing each result with the correct rounding and units every single time, even in casual practice.

On exam day, arrive early, eat beforehand, and treat the first few written questions as a warm-up to settle your nerves. If you blank on a value, move on and let the surrounding questions jog your memory — they often will, because the methods reinforce one another. A calm, rehearsed candidate who has drilled all seven methods to the per-method standard has every advantage going in.