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ZH�awg Properlp 9J-11-10 <br /> Ererett, N'nshington <br /> coarse-grained, medium dense to dense sand.. This material was encowitered at a <br /> depth of approximately 3.0 to 4.0 feet below the existing ground surface in the area <br /> of the proposed residence. In all instances, ins•are that there is a minimum of 0.� <br /> feet of a free draining material similar to the on-site sands undemeath all <br /> � foundations to protect against uplift due to hydrostatic pressures. Additionally, all <br /> foundations should be place with a minimum setback of 5.0 feet from the edge of a <br /> slope. The Contractor should anticipate that difticult (hard) excavation conditions <br /> will exist when the cemented sands found within TP-2 are encountered. <br /> The allowable bearing pressure may be increased by up to 1/3 to accommodate <br /> transient or seismic loads. For frost protection, the base of exterior footings should <br /> be located a minimum depth of 18 inches below adjacent grades or to adequate <br /> bearing material as described above. Interior footings need only penetrate 12 inches <br /> below the surrounding ground level or to adequate bearing material as described <br /> above. We recommend that all footings have a minimum dimension of 16 inches. <br /> Foundation settlements will be closely related to the quality of the site earthwork <br /> and the degree that the native soils are disturbed. We estimate that total settlement <br /> of tlie foundation elements placed on properly prepared native soils should not <br /> exceed 3/4 of an inch, witli differential settlements of approximately 1/2 of that <br /> totaL It should be noted that actual settlements could increase if care is not <br /> eaercised during foundation construction. <br /> �� GES, /��c. <br />