Masonry Laboratory Testing Technician


A Masonry Laboratory Testing Technician is an individual who has demonstrated the knowledge and ability to perform laboratory procedures required for preparation and testing of masonry construction-related materials including brick, structural clay tile, concrete masonry units, prisms, mortars, and grouts.


Certification/Recertification Member: $470 Non Member: $525

For those individuals certifying for the first time or those who are recertifying. Fee includes ACI study guide, classroom review session, lunch on first day, written and performance exams.

Written/Performance Exam Only Member: $205 Non Member: $260

For those individuals who failed their written or performance exam on their first testing attempt.  Fee includes written or performance exam. (no study guide)


Friday 12:00 p.m. - 4:00 p.m.
Classroom Review Session

4:00 p.m. - 6:00 p.m.
Laboratory Demonstration of Procedures

Saturday 7:00 a.m. - 2:00 p.m.
Written/Performance Exams

*Times and days are subject to change without notice.


Individuals requesting special accommodations enabling them to participate in ACI certification examinations must submit a letter from their primary physician to the Las Vegas Chapter ACI describing the physical challenge and providing a proposed solution (i.e. more time, a reader for the questions, physical assistance, etc.).  The Las Vegas Chapter ACI will forward the request and physician’s letter to ACI for direction.  Since the notification and formulation of appropriate accommodations takes time, candidates must make their request and submit the physician letter to the Las Vegas Chapter ACI at least three weeks prior to a certification examination session to formulate appropriate accommodations, arrange for their availability at the session, and accept the registration.


Participant can cancel registration by emailing a request to [email protected] five (5) business days prior to a certification training/testing/seminar/or chapter event to receive a refund of the registration fee less a $150.00 cancellation fee. Substitutions may be made at any time prior to the event by emailing [email protected]


This program requires demonstration of the knowledge and hands-on skills covered on the Job Task Analysis (JTA):

Job Task Analysis (JTA) for ACI Masonry Laboratory Testing Technician Certification

The program requires a working knowledge of laboratory procedures selected from the following ASTM test methods and practices:

  • C90—Loadbearing Concrete Masonry Units

  • C140/C140M—Sampling and Testing Concrete Masonry Units and Related Units

  • C270—Mortar for Unit Masonry

  • C780 and C780 Annex—Preconstruction and Construction Evaluation of Mortars for Plain Reinforced Unit Masonry

  • C1019—Sampling and Testing Grout

  • C1314—Compressive Strength of Masonry

  • C1552—Capping Concrete Masonry Units, Related Units, and Masonry Prisms for Compression Testing


ACI will grant certification only to those applicants who meet both of the following requirements:

  1. A passing grade on the ACI written examination; AND

  2. Successful completion of the ACI performance examination.

The one-and-a-half hour written examination is open-book and consists of approximately 70 multiple-choice questions. There are between eight and 12 questions on each of the ASTM test methods and practices. To pass the written examination, BOTH of the following conditions must be met:

  1. At least 60% correct for each of the required test methods and practices; AND

  2. A minimum score of 70% overall.

The performance examination is closed-book and requires actual demonstration of select field procedures described in ASTM test methods C140/C140M, C780, C1019, C1314, and C1552. The examinee is judged on his/her ability to correctly perform (or describe, where allowed) required steps for each procedure.

Recertification is necessary every five years and requires successful completion of both the written and performance examinations.