5117 23RD AVE W 2016-01-01 MF Import

GcotechniCal Engineering Report 51 17 23rd Ave W � lanuary 2, 2009 RMI File No. 50909 Pagc � Por planning purposes, we recommend lhat temporary cuts in the soils be no steeper than I Horizontal to I Vertical (IH: I V). If ground water were encountered, we would expect that flatter inclinations would be necessary. This information is provided solcly for the benefit of the owner anJ other design consultants and should oot be construed to imply that RMI ASSOCIATES LLC assumes responeibility for job site safety.The on-site contractor is the entity solely responsible for job site safety. We recommend that cut slopes be protected from erosion. Measures taken may include covering cut slopes with plestic sheeting and diverting surface runofl away from the top of cut slopes. H/e do not recommend vertical slopes for cuts deeper than 4 feet, if worker access is necessary. We recommend that cut slope heights and inclinations confortn to WISHA/OSHA standards. Structural Fill Gencral: All fill placed beneath buildings, pavements or other settlement-sensitive features should be placed as structurnl fill. For Ihe purpose of this report, structurel fill is defined ns material that is placed in accordance with prescribed methods and standards. and is monitored by an experienced geotechnical professional or soils technician. Pield monitoring proc„dures would inelude the performance of a rcpresentutrve numb:r of in-place density tests te document the attainment of the desired degree of relative compaction. M�terials: Imported structural fill should consist of a good quality, free-drai�iing granular soil, free of organics and oth�r dcleterious material, and be well graded to a maximum size of about 3 inches. Imported, all-weather fill should meet these requirements, and also should contain no more then about 5 peroent fines(soil passing a U.S. No. 200 Sieve), based on that fraction passing the U.S. 3/4-inch sieve. Fill Plecemenk Following subgrade preparation, placement of the structural fill may procee,i. All fill should be pinccd in G- to 8-inch thick unifonn lifts, and each lift should be sprez;i evenly and be thoroughly compacted prior to placement of subsequent lifts. All structural fill u��derlying building areas should bc compacted to at least 95 perccnt of its ma�:imum dry density. hiaKimum dry density, in this report, refers to that dersity as determined by the ASTM D 1557 compaction test procedure. The moisture content of the soils to be complcted should be within about 2 percent of optimum, so that a readily compactable condition exists, It may be necessary to overexcavate and remove wet soils in cases where drying to a compactable condition is not felsible. All compaction should be aa omplished by equipment cf a type and size sufficient to attain the desired degree ofcompaction. RMI ASSOCIATES LLC �II !,, ,(l