Concrete Strength Testing Technician

Concrete Strength Testing Technician Classes:
Due to Covid-19 related issues, OACI is postponing all CSTT classes until we can safely resume. You can still register to get your workbook by clicking the link below, however classes will be delayed until safety protocols change. Those who have already registered are on a first come first serve list for upcoming classes once they resume. New registrations will be added to a waitlist in a first come first serve basis.
Click Here to Receive Your Workbook and Register for the Waitlist

This certification is for all personnel involved in laboratory testing of concrete. Knowledge of the following ASTM standards is required for this certification:

ASTM C39 Test Method for Compressive Strength of Cylindrical Concrete Specimens
ASTM C78 Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
ASTM C617 Practice for Capping Cylindrical Concrete Specimens
ASTM C1231 Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders


Attendee is responsible for providing their own 4” or 6” diameter cylinder and 6”X6”X20” minimum beam. (Extra beams are appreciated if you have them)
You must attend the mandatory test procedure review and bring the Technician Workbook CP-19. The procedure review will include an oral presentation and ACI videotapes. Participants are strongly encouraged to review the Technician Workbook including the ASTM procedures and become familiar with typical test samples & equipment in advance of the program (available in Spanish).


8:00 am - Noon Procedure Review
Noon - 12:30 pm Lunch (Provided)
12:30 pm - 1:30 pm Written Exam
1:30 pm - 4:30 pm Performance Exams

BMCC 2411 Northwest Carden Avenue
Pendleton, OR, 97801
Central Point
Knife River 3750 Kirtland Road
Central Point, OR, 97502
Portland A
Mayes Testing 7911 NE 33rd Dr. #200
Portland, OR, 97211
Portland B
PSI 6032 N Cutter Cr. #480
Portland, OR, 97217
Carlson Testing 8430 SW Hunziker
Tigard, OR, 97223
Carlson Testing 4060 Hudson Avenue Northeast
Salem, OR, 97301