FIELD NOTE 01
What the credential covers
ACI defines this program around performing and recording seven basic field tests on freshly mixed concrete. Use the official JTA and current workbook for each required skill.
- C1064/C1064M: concrete temperature
- C172/C172M: sampling freshly mixed concrete
- C143/C143M: slump
- C138/C138M: density, yield, and gravimetric air content
- C231/C231M: pressure-method air content
- C173/C173M: volumetric-method air content
- C31/C31M: making and curing field specimens
FIELD NOTE 02
Two examinations, not one online score
The written examination is closed-book: 55 multiple-choice items in one hour, with at least 70% overall and 60% on each required method/practice. Performance requires actual demonstration of six methods plus verbal description of C172 sampling. [ACI program: Certification Requirements]
- Track each method, not only the overall score
- Arrange real apparatus practice
- Schedule through a sponsoring group
FIELD NOTE 03
Testing, fees, and recertification
The ACI page provides a testing-location finder. Confirm dates, fees, materials, and equipment arrangements with the group. Certification lasts five years; recertification requires both written and performance examinations. [ACI program: Certification Requirements]
- Confirm a real local session
- Ask what is included in its fee
- Keep the expiry date and both-exam renewal requirement
Common questions
Questions this page answers
Can I earn ACI Grade I entirely through online training?
No. ACI requires successful written and actual performance examinations. Preparation is not certification.
Does passing the written examination complete certification?
No. The performance examination is also required.
Use an original practice resource
- ACI Grade I Hands-On Practice Log: Seven Methods, Two Tracks
A downloadable method-by-method preparation log for written gaps and observed apparatus practice. It is not an official ACI checklist or performance examination.
- Inspection Certification Cost Worksheet: Confirm the All-In Budget
A downloadable blank budget for application, exam, reference materials, training, practical access, travel, and retesting. No invented credential fees.
Sources & boundaries
What supports this page
Original HoldPoint editorial guidance. Content updated 2026-10-02. 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
Primary source
Verify before you act
Exam policies, fees, references, and eligibility can change. HoldPoint is independent and uses American Concrete Institute as the authority for current program facts.
Official ACI sourceSource checks and limitations are listed above. No expert approval is implied.