2501 W CASINO RD 2018-01-02 MF Import

1 . , APPENDI)i C c�F�RsI, GRADING �GOMMENDATIONS � E-4888 , The building and pavement areas should be stripped and cleared ot all slabs, trees, existing utilities, surface vegetation, organic matter, and any ather deleterious material. Stripped materials ahould be removed from the site and disposed of ac desired. The stripped material � should not be mixed with any materials to be used as structural fill. Structural fill i� defined as any fill placed under buildings, roadways, slabs, pavements, or , any other load-bearing areas. Ideally, but particularly during wet weather, structural fill should comprise a free-draining, granular, organic-free material with a maximum aize of three inches. It should contain less than 3 percent �nes (silt and clay-size particles passing the No. , 200 mesh sieve based on the traction ot the material passing the No. 4 mesh sieve). During dry weather, any compactible non-organic soil meeting the above maximum size criterion may be used as structural fili. , Stroctural fill under floor slabs and footings should be placed in thin horizontal lifts not exceeding eight 8 inches in loose thickness. Each lift should be compacted tu at least 95 � percent of maximum dry density, as determined by ASTM Test Designation D-�557-78 (Modified Proctor). Fill under pavements and walks should be placed in similar thin horizontal lifts and, with the exception of the upper twelve (12) inches, be compacted to at least 90 percent ot maximum density. The top twelve (12) inches should be compacted to � at least 95 percent maximum densiry. Following the stripping operation, the ground surface where structural fill, foundations, or � slabs are to be placed should be proofrolled. All proofrolling should be performed utider the full time observation of a representative of ECI. This procedure, which should be accomplished with a suitable steel wheel roller, is to deternilne the presence and approximate ■ areal extent of any soft or unstable areas. Any such soft or unstable areas should be � moisture conditioned, by aeration ot the addition of amendments, as appropriate, and recompacted. If after recompaction these areas remain soft or unstable, they should be � overexcavated and the unsuitable materials removed and replaced with compacted structura] �Il to a depth that will provide a stable base. Typically, a deptt, of two to three feet is adequate for this purpose. � Fill may be placed on a slope; however, where the slope exceeds 4:1 (H:V), the slope should be benched prior to placement of the fill. The benches should have an outward slope of less � than 5 percent. � � � � Earth Consultants, Inc.