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AET #20-02044 - Page 6 <br /> <br />Review of Soil Properties <br /> <br /> Strength <br /> <br />Based on the N-values and sample appearance, the fine alluvium and mixed alluvium soils are <br />judged to be low to moderate strength materials. The coarse alluvium sands and the glacial till <br />are judged to be moderate to high strength materials. <br /> <br /> Compressibility <br /> <br />The topsoil/swamp deposits are judged to be compressible, and should be removed from building <br />areas. Some of the very soft/very loose to soft alluvial soil are also judged to be compressible, <br />if present at depths near foundation elevations. The recorded N-values in some of the deeper <br />alluvial soils are also low. However, in our judgement these N-values are likely affected by the <br />water pressure and these soils are typically not compressible under the anticipated light loadings. <br />The remainder of the alluvial and till soils are not judged to be significantly compressible under <br />the anticipated light loadings. <br /> <br /> Expansive/Shrinkage Potential <br />The site soils depicted by the soil <br />characteristics. <br /> <br />borings typically <br /> <br />do not have expansive or shrinkage <br /> <br /> Frost Susceptibility <br /> <br />It is our judgment many of the near surface soils are at least moderately frost susceptible, <br />depending upon their water contents. <br /> <br />If the frost susceptible soils remain in-place and are allowed to freeze, heaving of the subgrade will <br />occur. The magnitudes of heave may be on the order of 1/4" to 3/8" for each foot of frost <br />penetration within the soil, which could translate to 1" to 3" of total movement. This could be <br />exaggerated further if free water is available, which could lead to the formation of ice lenses. <br /> <br /> <br />