Study guide
1.2 Eligibility and the Two-Part Certification Path
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
1.2 Eligibility and the Two-Part Certification Path
Key Takeaways Explain This Topic AI
ACI requires no specific education or work experience as a prerequisite for Grade I certification.
ACI grants certification only after a candidate passes both a written examination and a performance examination.
Attending a training course alone does not result in ACI certification; the two exams are separate from training.
Both exam parts are closed book, so candidates must internalize the procedures rather than plan to look them up.
Candidates should plan the written and performance parts as one connected process, often scheduled on the same day or close together.
Last updated: June 2026
Entry Requirements: Open Door, Hard Exams
ACI policy states that no specific education or work experience is required as a prerequisite for Concrete Field Testing Technician Grade I certification. There is no degree requirement, no minimum number of jobsite hours, and no employer-title gate before a candidate enters the program. That open door is a deliberate choice: ACI wants the credential available to anyone who can prove competence, including new field hands.
Do not confuse open eligibility with an easy exam. The absence of a prerequisite shifts all of the burden onto the two examinations themselves. A candidate with zero field hours can register, but that same candidate must still pass a closed-book written test and physically demonstrate the procedures to an examiner. In practice, candidates with little hands-on time should budget extra weeks for supervised practice precisely because there is no experience requirement to lean on.
The Two-Part Path to the Credential
ACI grants certification only to applicants who meet both of these requirements:
A passing grade on the ACI written examination , and
Successful completion of the ACI performance examination .
Both conditions must be satisfied. A candidate who aces the written exam but cannot demonstrate sampling will not be certified, and a candidate who is flawless at the table but fails the written test is not certified either. The two parts are graded independently, and there is no averaging between them.
Training Is Not Certification
A frequent and costly misunderstanding is that attending an ACI training course or a chapter review session results in certification. It does not. Training improves a candidate's odds and often runs the day before testing, but only the two exams produce the credential . Sign-in sheets, course completion certificates, and instructor praise have no bearing on ACI's certification decision. Candidates should treat training as preparation, then make sure they are actually registered for both the written and performance examinations.
Closed Book on Both Sides
Both the written and the performance examinations are closed book . On the written side, that means no ASTM standards, no CP-1 workbook, and no notes during the test; the rodding counts, layer counts, tolerances, and timing limits must be memorized. On the performance side, closed book means the candidate executes each procedure from memory while an examiner watches against a checklist.
The closed-book rule shapes how to study. Reading the standards passively is not enough — a candidate must convert each procedure into recall and into muscle memory. Flashcards for the numeric values and repeated dry runs of each physical test are the methods that match a closed-book format.
Scheduling the Two Parts
ACI certification is delivered through local sponsoring groups , most often ACI chapters, that schedule sessions and supply equipment and examiners. The written and performance parts are commonly offered on the same day or back to back , frequently after a one- or two-day review course.
- Element Grade I Reality
- Education prerequisite None
- Experience prerequisite None
- Written exam Required, closed book, must pass
- Performance exam Required, closed book, must pass
- Training course Helpful, but not itself certification
The practical takeaway is to plan both parts as one connected certification process and confirm you are registered for each, rather than assuming a class enrolls you in the exams.
Planning Backward From Test Day
Because eligibility is open but the exams are demanding, the right approach is to plan backward from the test date. A candidate with limited field time should give themselves enough lead time to physically rehearse every procedure, not just read about it. A reasonable plan for a newcomer looks like this:
Weeks out: obtain the current ASTM standards and CP-1, and read each method once.
Mid-prep: build flashcards for every numeric value (rod sizes, layer and rodding counts, tolerances, timing limits) and start memorizing them.
Final weeks: perform each test under a peer or instructor running the checklist, fixing skipped steps until the order is automatic.
Test day: arrive registered for both the written and performance parts.
Common Eligibility Misunderstandings
Because there is no prerequisite, candidates sometimes assume the program is informal. It is not. The lack of a prerequisite is balanced by closed-book testing and step-based grading, both of which are strict. A second misunderstanding is that experience substitutes for either exam — it does not at entry, and it does not at recertification. A third is that one part can be "made up" by a strong showing on the other; the parts are independent, and both must be passed.
The healthiest mindset is to treat open eligibility as permission to start, not as a sign of an easy test. Candidates who respect the two-part structure, register for both parts, and rehearse the procedures under observation are the ones who walk out certified on the first attempt. The open door is a real advantage for someone new to the trade, but it only pays off for candidates who use the lead time it gives them to actually build skill rather than assuming the absence of a prerequisite means the absence of difficulty.