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1. Geogrid - The geogrid shall provide the following allowable tensile properties: <br />L,'6' ( 01 <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 />• %" minus angular <br />aggregate <br />1-1/2" minus angular <br />aggregate <br />ASTM D6637*, <br />ASTM D6637* <br />ASTM D6637* <br />FHWA NM -00-043 <br />PROPERTY MIETHOD <br />Junction Strength, lbs/ft GRI GG2-87@ <br />10%/min <br />54,830 <br />1,850 <br />3,970 <br />1,620 <br />1,570 <br />1,550 <br />VALUE <br />3,690 <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 />**Where: <br />Ta = TULT <br />RFCR x RFID x RFD <br />as described in FHWA NEI -00-043 <br />and 044 <br />a. TuL,T - 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 NIHI-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 -08 Phase 2 <br />02779 4 GEOGRID <br />