Laserfiche WebLink
Geotechnical Engineering Report 7 May 25,2017 <br /> Central Everett CHC,Everett,Washington RGI Project No.2017-094 <br /> Prior to use, a RGI representative should observe and test all materials imported to the <br /> site for use as structural fill. Structural fill materials should be placed in uniform loose <br /> layers not exceeding 12 inches and compacted as specified in Table 3. The soil's maximum <br /> density and optimum moisture should be determined by ASTM D1557. <br /> Table 3 Structural Fill Compaction ASTM D1557 <br /> • <br /> u Nlmrrnum Moisture Content, <br /> Location Material Type Compaction <br /> Range <br /> Foundation backfill Approved imported fill soils 95 +2 -2 <br /> Retaining Wall Backfill Approved imported fill soils 92 +2 -2 <br /> General Fill areas)(non- <br /> Approved imported fill soils 90 +3 -2 <br /> structural..l..—reas..............._......__............_.............................. ... ....................__..........._...........__........._..........._......_....... ......................_............_......................._..................._.__........_.........._......._.._._..................._....._....__.................._......... <br /> Pavement, Subgrade <br /> and Base Course Approved imported fill soils 95 +2 -2 <br /> Placement and compaction of structural fill should be observed by RGI. A representative <br /> number of in-place density tests should be performed as the fill is being placed to confirm <br /> that the recommended level of compaction is achieved. <br /> 5.3 FOUNDATIONS <br /> • <br /> The new building elements can either be supported on shallow or deep foundations as <br /> needed. The design details are presented in the following paragraphs. <br /> 5.3.1 SHALLOW FOUNDATION <br /> Following site preparation and grading, new building element foundations may be <br /> supported on conventional spread footings bearing on medium dense native soil or <br /> structural fill. <br /> Table 4 Foundation Design <br /> Desi n Parameter Value <br /> Allowable Bearing Capacity 2,500 psfl <br /> Friction Coefficient 0.25 <br /> Passive pressure (equivalent fluid pressure) 250 pcf2 <br /> Minimum foundation dimensions Columns: 24 inches <br /> Walls: 16 inches <br /> 1 psf=pounds per square foot <br /> 2 pcf=pounds per cubic foot <br /> II . <br /> RILEYGRUUP <br />