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extrapolation with time temperature superposition principals. Creep <br /> rupture testing is required on representative samples of the finished <br /> product and not a single component of the geogrid (e.g., fiber and/or yarn). <br /> Creep rupture testing that has been performed through the use of <br /> alternative techniques (e.g., stepped Isothermal Method) must be <br /> supported with Creep rupture data conducted for a minimum of 10,000 <br /> hours at 20 degrees C. <br /> In no event shall the minimum value of FSCR be less than 2.3 for HDPE <br /> uniaxial geogrid <br /> The load applied for the test duration must equal or exceed the percentage <br /> of ultimate representing the creep rupture strength of the product. The <br /> percentage of ultimate is defined as the inverse of the FSCR or 1/FSCR. The <br /> ultimate strength used in this calculation shall be that of the roll used in <br /> the testing and not the MARV for the product. <br /> C. RFID - Reduction Factor for Installation Damage shall be determined from <br /> construction damage tests for each product proposed in accordance with <br /> ASTM D5818-95. Tests shall be conducted using the actual backfill from <br /> the project. However, in lieu of such testing, the Manufacturer can supply <br /> test results from other backfill soils if such soils can be shown to result in <br /> more severe construction damage than the proposed backfill. Testing shall <br /> be consistent with ASTM D5818-95. <br /> d. RFD - Reduction Factor for Durability/Aging is the combined partial factor <br /> for potential chemical and biological degradation. RFD shall be determined <br /> from polymer specific (HDPE and PP as identified by their mechanical <br /> properties, and PET as identified by CEG number and number average <br /> molecular weight, Mn) durability testing covering the range of expected <br /> soil environments. Polyolefin geogrids can be used in a pH range from 2 to <br /> 12, and polyester geogrids can be used within a pH range of greater than 3 <br /> and less than 9. The minimum Reduction Factor for Durability/Aging for <br /> HDPE and PP shall be 1. <br /> Forward Landfill WMU FU-04 <br /> 02779 5 GEOGRID <br />