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e. C; - Soil Interaction Coefficient value shall be determined from long-term effective stress pullout tests per GRI-GG5, unless the junction creep testing of the geogrid is used to determine Ta. The C; value is determined as follows: C; = F 2 L GN tan Where: F = Pullout force (lb/ft), per GRI-GG5 L = Geogrid Embedment Length in Test (ft) 6N = Effective Normal Stress (psf) � = Effective Soil Friction Angle, Degrees PART 3 EXECUTION 3.1 EXAMINATION A. The GEOSYNTHETIC CONTRACTOR and QA/QC CONSULTANT shall check the geogrid upon delivery to verify that the proper material has been received. The geogrid shall be inspected by the QA/QC CONSULTANT to be free of flaws or damage occurring during manufacturing, shipping, or handling. 3.2 PREPARATION is A. The subgrade soil shall be prepared as indicated on the Construction Drawings or as directed by the DESIGN ENGINEER. Foundation soil shall be excavated to the lines and grades as shown on the drawings or as directed by the DESIGN ENGINEER. Overexcavated areas shall be filled with compacted backfill material. 3.3 INSTALLATION A. Geogrid shall be laid at the proper elevation and oriented such that the panels extend from the anchor trench at the crest of slope to the anchor trench at the tie-in to WNW FU -08 North. Correct orientation (roll direction) of the geogrid shall be verified by the QA/QC CONSULTANT. Geogrid may be temporarily secured in place with staples, pins, sand bags, or backfill as required by fill properties, fill placement procedures, or weather conditions, or as directed by the DESIGN ENGINEER. B. Geogrid panels shall be placed directly next to the adjacent panel along the longitudinal length. No overlap is required. B. Geogrids shall be connected with a mechanical polymer bar along their latitudinal (i.e. butt) seams. Forward Landfill WMU FU -13 0 02779 6 GEOGRID