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DocuSign Envelope ID:07A4359F-6D47-4987-B1F1-BF667ACBB3BA <br /> 2) Name of testing agency. <br /> 3) Names and certification numbers of field and laboratory technicians <br /> performing inspections and testing. <br /> 4) Name of concrete manufacturer. <br /> 5) Date and time of inspection, sampling,and field testing. <br /> 6) Date and time of concrete placement. <br /> 7) Location in Work of concrete represented by samples. <br /> 8) Date and time sample was obtained. <br /> 9) Truck and batch ticket numbers. <br /> 10) Design compressive strength at 28 days. <br /> 11) Concrete mixture designation,proportions, and materials. <br /> 12) Field test results. <br /> 13) Information on storage and curing of samples before testing, including <br /> curing method and maximum and minimum temperatures during initial <br /> curing period. <br /> 14) Type of fracture and compressive break strengths at seven days and 28 days. <br /> C. Batch Tickets: For each load delivered, submit three copies of batch delivery ticket to testing <br /> agency, indicating quantity, mix identification, admixtures, design strength, aggregate size, <br /> design air content, design slump at time of hatching, and amount of water that can be added at <br /> Project site. <br /> D. Inspections: <br /> 1. Verification of use of required design mixture. <br /> 2. Concrete placement, including conveying and depositing. <br /> 3. Curing procedures and maintenance of curing temperature. <br /> 4. Verification of concrete strength before removal of shores and forms from beams and <br /> slabs. <br /> 5. Batch Plant Inspections: On a random basis,as determined by Architect. <br /> E. Concrete Tests: Testing of composite samples of fresh concrete obtained in accordance with <br /> ASTM C 172/C 172M to be performed in accordance with the following requirements: <br /> 1. Testing Frequency: Obtain one composite sample for each day's pour of each concrete <br /> mixture exceeding 5 cu. yd., but less than 25 cu. yd., plus one set for each additional 50 <br /> cu. yd. or fraction thereof. <br /> a. When frequency of testing provides fewer than five compressive-strength tests for <br /> each concrete mixture,testing to be conducted from at least five randomly selected <br /> batches or from each batch if fewer than five are used. <br /> 2. Slump: ASTM C143/C143M: <br /> a. One test at point of placement for each composite sample,but not less than one test <br /> for each day's pour of each concrete mixture. <br /> b. Perform additional tests when concrete consistency appears to change. <br /> 3. Air Content: ASTM C231/C231M pressure method, for normal-weight concrete. <br /> Orange County Solid Waste Drainage Repairs DAA 2200365/TRC 017055.0000.0000 <br /> Drainage Repair Project November 2023 <br /> Orange County, NC 033000-17/19 <br />