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• <br /> S 4111 <br /> Keystone Century Blocks <br /> Max 4H:1V <br /> Slope <br /> Structural Fil <br /> at 95%Modified Proctor) <br /> Dense to Very Dense <br /> Native Glacial Soils <br /> Max. 8 Feet Tall Modular <br /> Block Wall <br /> Min 0.5 Ft.Embedment Geogrid <br /> Notes: <br /> 8"x 12" Keystone block units with Miragrid 8xt geogrid reinforcement. <br /> Geogrid to be placed between blocks as shown on the attached files. <br /> Geogrid length measured from face of wall. <br /> Geogrid to be placed, cut,and pinned between blocks per manufacturer's specifications. <br /> All backfill in geogrid zone should consist of structural fill per report. <br /> Drainage should include 4 inch perforated pipe surrounded by clean angular rock. <br /> Cobalt to monitor construction, backfill, geogrid, and drainage during construction. <br /> See report for more detailed information regarding construction. <br /> Not to Scale <br /> MSE , P.O.Box 82243 <br /> 3631 Wetmore Avenue wall DetailKenmore,WA 98028 <br /> Everett,Washington Cobalt (206)331-1097 <br /> Figure 2 cobaltgeo@ gmail.com <br /> Geosciences <br />