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I. Geogrid - The geogrid shall provide the following allowable tensile properties: <br />LOAD CAPACITY <br />I W au W 51 ' 1u <br />Load Capacity <br />True Initial Modulus <br />Tensile Strength @5% <br />Strain, lbs/ft <br />Ultimate Tensile Strength <br />Long -Term (Ta), lbs/ft* * <br />• sand, silt, and clay <br />• 3/a" minus angular <br />aggregate <br />• 1-1 /2" minus angular <br />aggregate <br />ASTM D6637*, <br />ASTM D6637* <br />ASTM D6637* <br />FHWA NHI-00-043 <br />PROPERTY METHOD <br />Junction Strength, lbs/ft GRI GG2-87@ <br />10%/min <br />VALUE <br />54,830 <br />1,850 <br />3,970 <br />1,620 <br />1,570 <br />1,550 <br />* The tensile strength at 2 percent and 5 percent strain shall be determined with <br />this test conducted without artificially deforming test materials under load <br />before measuring such resistance or employing an artificial "secant" or "offset" <br />tangent basis of measurement so as to overstate tensile properties. <br />Ta — TULT <br />"Where: <br />Where: <br />RFCR x RFID x RFD <br />as described in FHWA NHI-00-043 <br />and 044 <br />a. TuLT - Ultimate Tensile Strength shall be the minimum average roll value <br />ultimate tensile strength as tested per ASTM D6637. This test shall be <br />conducted without artificially deforming test materials under load before <br />measuring such resistance or employing an artificial "secant" or "offset" <br />tangent basis of measurement so as to overstate tensile properties. <br />b. RFoR - Reduction Factor for Creep Rupture (FScR) is the ratio of TuLT <br />divided by the creep rupture strength determined in accordance with <br />ASTM D5262-97 and FHWA NHI-00-043. The test results shall be <br />extrapolated for a 75 -year design life per FHWA NHI-00-043. Creep <br />rupture data of a polymer product at a designed temperature is limited to <br />one order of magnitude in extrapolation. Creep rupture testing at an <br />elevated temperature permits an additional order of magnitude in <br />Forward Landfill WMU FU -06 <br />02779 4 GEOGRID <br />1] <br />• <br />