Directory of ACI Concrete Strength Testing Technicians Directory of ACI Aggregate Testing Technicians - Level I Directory of ACI Concrete Laboratory Testing Technician - Level I ACI Concrete Strength Testing Certification (CST) The CST certification is offered to both new technicians and current technicians with an expiration date of December 12, 2009. Technicians that are recertifying can elect to attend the day and a half course/exam or take the exam only option (see 'Fees" below). Established by the American Concrete Institute (ACI) in 1997, the Concrete Strength Testing (CST) certification was developed for certifying experienced laboratory technicians in the following ASTM concrete cylinder test methods: C617 Capping Cylindrical Test Specimens C1231 Use of Unbonded Caps in the Determination of Compressive Strength C39 Compressive Strength of Cylindrical Concrete Specimens C78 Flexural Strength of Concrete Course Overview On day one, the four ASTM standards are reviewed through a combination of classroom and laboratory instruction. On day two, students will complete a written and performance exam demonstrating their proficiency of the test methods. Exam The written exam consists of 40 multiple choice questions divided into four sections. Each section covers an individual ASTM Standard. Passing requires a minimum overall score of 70% AND a minimum score of 60% on each individual standard. Students have 60 minutes to complete the written exam. For the performance exam, students are graded on their ability to correctly perform all required procedures for each of the ASTM standards. ACI Aggregate Testing Technician - Level I Certification (ATT) Established by ACI in 2007, the Aggregate Testing Technician (ATT) - Level I Certification was developed to certify experienced laboratory technicians in the following AASHTO aggregate test methods. T2 Sampling of Aggregates T248 Reducing Samples of Aggregate to Test Size T11 Materials finer than No. 200 Sieve T27 Sieve Analysis of Fine & Coarse Aggregates T85 Specific Gravity & Absorption of Coarse Aggregate T84 Specific Gravity & Absorption of Fine Aggregate T255 Total Evaporable Moisture Content of Aggregate by Drying T21 Test for Organic Impurities in Fine Aggregate Course Overview On day one, the eight AASHTO standards are reviewed through a combination of classroom and laboratory instruction. On day two, students will complete a written and performance exam demonstrating their proficiency of the test methods. Exam The written exam consists of 100 multiple choice questions divided into eight sections. Each section covers an individual AASHTO standard. Passing requires a minimum overall score of 70% AND a minimum score of 60% on each individual standard. Students have two hours to complete the written exam. For the performance exam, students are graded on their ability to correctly perform required procedures for each of the AASHTO standards. Certification is required by ASTM C94, "Standard Specification for Ready Mixed Concrete" and ASTM C1077, "Standard Practice for Laboratories Testing Concrete and Concrete Aggregates for Use in Construction". Certification assures owners, specifiers and other interested parties that testing of strength specimens and aggregate is conducted by qualified laboratory personnel. Recertification is required every five years. NOTE: Students successfully passing both programs will also receive ACI's Laboratory Testing Technician - Grade I Certification. 2008 FEES: Course / Exam for CST or ATT Exam Only for CST or ATT Course / Exam for CST & ATT Exam Only for CST & ATT MCA Members, ACI Greater Michigan Chapter Members, & Government Employees $ 350 $ 250 $ 600 $ 400 Non - Members $ 450 $ 350 $ 800 $ 600 Full - Time Students (proof of enrollment required) $ 250 $ 150 $ 400 $ 200 Books are included in the CST & ATT classes. For Exam Only Students, you may purchase the following: $ 68 - CST Workbook $ 78 - ATT Workbook Location: Wayne County Engineering Division Offices, 38809 Michigan Ave., Wayne