Reso 2007-1103 - Laserfiche WebLink

Home Browse Search

Rr-1111" and Resolution sample for the Engineer until the Engineer accepts the eight LOTs represented by the samples. 160 -7.3.2 Department Verification Tests: 160 - 7.3.2.1 Bearing Value: The Engineer will sample and test the Stabilized Subgrade for determination of the LBR in accordance with FM 5 -515. The Engineer will select test locations, including Stations and Offsets, using a Random Number generator, based on the eight LOTs under consideration. 160- 7.3.2.2 Mixing Depth Requirements: The Engineer will measure the mixing depth from the proposed Final Grade Line. The Engineer will select test locations, including Stations and Offsets, using a Random Number generator. 160- 7.3.2.3 Modified Proctor Maximum Density: The Engineer will randomly select one of the four split samples and test in accordance with FM 1 -T 180, Methods D. 160 -7.4 Verification Comparison Criteria and Resolution Procedures: 160 -7.4.1 Bearing Value: If the Department's Verification test meets the requirements of 160- 7.2.1, then the Engineer will accept the eight LOTs. Otherwise, the Engineer will obtain one additional sample of material taken from a randomly selected location within the eight LOTs in question. The State Materials Office or an AASHTO accredited laboratory designated by the State Materials Office will perform Resolution testing. The material will be sampled and tested in accordance with FM 5-515. If the Resolution Testing results meet the requirements of 160 -7.2.1 then the Engineer will accept the eight LOTs in question, otherwise reprocess all eight LOTs in accordance with 160 -5 and retest in accordance with 160 -7.3.1 .1. 160 -7.4.2 Mixing Depth Thickness: If the Department's Verification test meets the requirements of 160- 7.2.2, then the Engineer will accept that LOT, otherwise retest the LOT at a site within a 5 feet [1.5 meter] radius of the Verification test location and observe the following: 1. If the Quality Control retest meets the requirements of 160- 7.2.2, then the Engineer will accept that LOT. 2. If the QC Re -test confirms shallow depth, re -mix the LOT to an appropriate Depth and re- measure in accordance with 160-7.3.1.2. The Engineer may re- verify in accordance with 160 - 7.3.2.2. 3. If the QC re -test confirms extra deep mixing, conduct an additional QC density test after compaction for the bottom 12 inches [300 mm] of the subgrade for that LOT in addition to the QC Density testing for top 12 inches [300 mm]. The additional Density test must meet the requirements of 160- 7.2.3. 160 -7.4.3 Modified Proctor Maximum Density Determination: The Engineer will verify the Quality Control results of the eight consecutive LOTs if the Verification test result compares within 4.5 PCF [72 kg /M3] of the QC result for the corresponding LOTs. Otherwise, the Engineer will collect the Resolution split sample corresponding to the Verification sample tested. The State Materials Office or an AASHTO accredited laboratory designated by the State Materials Office will perform Resolution testing. The material will be sampled and tested in accordance with FM 1 -T 180, Method D. The Engineer will compare the Resolution Test results with the Quality Control test results. If the Resolution Test result is within 4.5 PCF [72 kg /m3] of the corresponding Quality Control test result, the Engineer will use the Quality Control test results for material acceptance purposes for each corresponding pair of LOTs. If the Resolution test result is not within 4.5 PCF [72 kg /m3] of the corresponding Quality Control March 2007 01000 -39 03- 4122.D r o