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Page 6 <br /> <br />exceed eight inches in thickness, and moisture conditioned to slightly over optimum <br />moisture content prior to compaction. <br /> <br />Imported soils, if any, should have a very low expansion potential and should be <br />geotechnically observed/tested and accepted by the geotechnical consultant prior to using <br />at the site. <br /> <br />In general, grading at the site, if any, should be performed in accordance with the <br />requirements of the City and under the geotechnical observation and testing of the project <br />geotechnical consultant. The compaction criterion for fill and backfill materials is a <br />minimum of 90% of the maximum density determined in accordance with ASTM Test <br />Method D1557. <br /> <br />Temporary Excavations <br /> <br />In general, temporary excavations should be performed in accordance with OSHA <br />requirements. In general, care should be taken during excavation near an existing <br />structural object, if any to ensure no damage is done to the existing object. <br /> <br />In general, based on our experience with many similar projects, temporary excavation <br />next to existing building footings does not affect the existing footings for this project. <br />However, if needed, excavations in sections, about 10 to 15 ft. long can be performed. <br />This will be determined by the geotechnical engineer of record based on the conditions to <br />be exposed during excavation. <br /> <br />The above temporary excavation recommendations can be changed by the geotechnical <br />consultant based on conditions to be exposed in the field during excavations. <br /> <br />BUILDING FOUNDATION DESIGN GUIDELINES <br /> <br />Geotechnical Parameters For Structural Design <br /> <br />For conservative purposes, the following “lowest” code values should be used for <br />structural design, as needed. <br /> <br />a. Allowable vertical bearing earth pressure: 1,500 psf. <br /> <br />An increase of one-third is permitted when using the alternative load <br />combinations that include wind or earthquake loads. <br /> <br />b. Lateral bearing passive earth pressure: 100 psf. per foot into competent materials <br />below the finished ground surface. <br /> <br />An increase of one third is permitted when using the alternative load <br />combinations that include wind or earthquake loads. <br /> <br />209 N Bewley St <br />Unit# 211/13/2024