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PART 3-- EXECUTION <br /> 3.1 CONSTRUCTION REQUIREMENTS <br /> A. At the end of each day the Contractor shall eliminate surface indentations, including those caused by <br /> sheeps foot rollers and tractor cletes,and roll the surface with a steel wheel or rubber tired roller. <br /> B. The depth and class of aggregate base to be constructed shall be as shown on the plans. Aggregate base <br /> construction shall take place only after the street subgrade condition and grade has been examined by the <br /> Engineer. <br /> C. All aggregate base courses shall be compacted using the Quality Compaction Method. <br /> D. The compacted aggregate base shall be test rolled using a fully loaded aggregate truck(tandem) in a <br /> pattern approved by the Engineer. The stability of the compacted base shall be considered adequate when <br /> the surface shows less than 1.0-inch of yielding or rutting after one pass,or as otherwise approved by the <br /> Engineer. The test rolling of the compacted aggregate base using a fully loaded aggregate truck(tandem) <br /> shall be incidental. <br /> 3.2 SOURCE QUALITY CONTROL <br /> A. The Contractor shall arrange for having the following testing performed: <br /> 1. One gradation test for each 500 tons or 275 cubic yards(CV)of each class of aggregate base. <br /> 2. One percent crushing test. <br /> 3. One aggregate quality test. <br /> B. Samples for testing shall be taken from material in stock at locations approved by the Engineer.All sampling <br /> methods shall be approved by the Engineer. <br /> C. The Contractor shall cooperate fully with the individuals performing the tests. <br /> D. Should any of the specified tests fail,the Contractor may arrange and pay for additional tests as may be <br /> necessary to satisfy the Engineer that the requirements have been met. <br /> 3.3 FIELD QUALITY CONTROL <br /> A. "Blue Top"stakes shall be provided by the Contractor at 50.0-foot intervals to confirm that the base is <br /> constructed to the required grades and elevations. Methods other than "Blue Top" staking may be allowed, <br /> if approved by the Engineer. <br /> ****END OF SECTION**** <br /> City of Elk River-R13.119052 AGGREGATE BASE <br /> August 2019 PAGE 02720-2 <br /> V122617©Bolton&Menk,Inc.2019,All Rights Reserved <br />