2422 W Marty Ln Unit 2 & 3 - Plan

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2422 W. Marty Lane October 2, 2025 Page: 5 Fill Material. The on-site soils can be used for compacted fill. However, during grading operations, soil types other than those analyzed in the geotechnical reports may be encountered by the contractor. The geotechnical consultant should be notified to evaluate the suitability of those soils for use as fill and as finished grade soils. Imported fill materials should be approved by the Geotechnical Engineer prior to importing. Soils exhibiting any expansion potential should not be used as import materials. Both imported and on- site soils to be used as fill materials should be free of debris, organic and cobbles over 6 inches in maximum dimension. Site Drainage. Foundation and slab performance depends greatly on how well runoff waters drain from the site. This is true both during construction and over the entire life of the structure. The ground surface around structures should be graded so that water flows rapidly away from the structures without ponding. The surface gradient needed to achieve this depends on the type of landscaping. In general, we recommend impermeable areas such as paved and concrete flatwork within a minimum distance of 10 feet from a building (measured perpendicular to the face of the wall) should be sloped away at a minimum gradient of 2%. Other areas such as lawn and vegetated areas should have minimum descending gradients of at least 5% within 10 feet of the building (measured perpendicular to the face of the wall). Utility Trenches. Bedding materials should consist of sand having Sand Equivalent not less than 30, which may then be jetted. Existing soils may be utilized for trench backfill provided they are free of organic materials and rocks over 6 inches in dimension. The backfill should be uniformly compacted to at least 90% relative compaction based on maximum density performed in accordance with ASTM D-1557. Excavation. Excavation within 3 feet from the existing building should be limited to 24 inches deep. Otherwise, underpinning of the existing foundations may be warranted. 4. Review of Plans The geotechnical consultant should review the final construction plans and specifications in order to confirm that the general intent of the recommendations contained in this report have been incorporated into the final plans and design documents. Also, the plans will be compared to the preliminary plans used in the preparation of this report in order to evaluate the effect of any major changes with respect to the geotechnical recommendations given in this report.