ACI Grade 1 Written Exam questions with correct answers

The temp. measuring device shall be capable of accurately measuring the temp. of freshly mixed concrete to ____ throughout a range of ____. Answer 1 Degree F, 30-120 Degrees F A composite sample of concrete is required even if the only purpose for obtaining the sample is to determine the temp. T or F? Answer False C172/C172M covers sampling from five type of equipment which are___, ___, ___, ___, & ____? Answer revolving drum, stationary, paving, continuous, & open top The mold for making the slump test is in the shape of ____. Answer the frustum of a cone The surface on which the slump mold will be placed must be ____. Answer Flat, moist non-absorbent, & rigid How deep should the tamping rod penetrate each layer? Answer Rod each layer throughout it's depth , on second & final layer the rod should penetrate into the previous layer approximately 1 in.