Laserfiche WebLink
Forward Compost Facility Stormwater Improvements <br />02778 17 HDPE GEOMEMBRANE <br />described in this Section. Test the continuity of the repair in accordance with this Section. iv. Size of Samples: minimum 12 inches wide by 44-inches-long with the seam centered lengthwise. Cut a 1-inch-wide strip from each end of the sample and test these for (shear and peel) in the field. Cut the remaining sample into three parts for distribution as follows:  One portion for the GEOSYNTHETICS CONTRACTOR: 12 inches by 12 inches for quality control testing.  One portion for QA/QC CONSULTANT: 12 inches by 18 inches for quality assurance testing.  One portion to the OWNER for archive storage: minimum 12 inches by 12 inches. c. Field Testing i. The GEOSYNTHETICS CONTRACTOR shall test the two, 1-inch-wide strips by tensiometer for peel and shear, respectively. ii. Both test strips must meet peel and shear requirements for welded seams specified in Paragraph 3.2, C.8. iii. If any field test sample fails, follow failed test procedures outlined in this Section. <br />D. Laboratory Testing performed independently by Construction Quality Assurance (CQA) Laboratory and Installer. 1. Test "seam strength" and "peel adhesion" (ASTM D3083 and D413). Test 1-inch wide samples at strain rate of 2 inches per minute. 2. Minimum acceptable values to be obtained for these tests are specified in Article 3.2, C.8. 3. Test at least five specimens for each test method. Four of five specimens must meet minimum requirements. None of the peel specimens may peel 100 percent, or the entire sample will be considered as failing. 4. Select specimens alternately by test from the samples (i.e., peel, shear, peel, shear...). 5. Provide test results no more than 24 hours after receiving samples. 6. For double wedge welded samples, test both sides in peel. <br />E. Failed Weld Procedures. 1. Follow these procedures when there is a destructive test failure. Procedures apply when test failure is determined by the QA/QC CONSULTANT, the GEOSYNTHETICS CONTRACTOR, or by field tensiometer. Follow one of the following two options: a. First Option.  Reconstruct the seam between any two passing test locations. The GEOSYNTHETIC’S CONTRACTOR can not perform the repair by extrusion welding the flap. b. Second Option.  Trace the weld at least 10 feet minimum in both directions