ACI Certification Concrete Field Testing Technician Grade 1 questions with correct answers

The diameter of the tamping rod used in this test method is _______. Answer 5/8" in [16mm] What is the required shape of the tamping end of the rod? Answer Rounded to a hemispherical tip. What is the required minimum frequency of the vibrator used in this test method? Answer 7000 vibrations per minute. The outside diameter or side dimension of the vibrating element must be at least ______ but not greater than _______. Answer 0.75 in [19 mm] 1.50 in [38 mm] A plastic container can be used for the measure in this method. True or False? Answer False, Measure must be steel or other suitable metal. What is the minimum thickness of a metal strike-off plate? Answer 1/4" in. [6 mm] What is the minimum thickness for a glass or acrylic strike-off plate? Answer 1/2" in [12 mm]