9300 W MALL DR 2018-01-01 MF Import

� G & M Investments November 11, 1993 P-3161 Page 6 foundations must either be poured directly again:t relatively level, undiaturbed soil or level structural fill must be placed around the outs:ide of the foundation. We recommend the following design va.lues be used for the foundation's resistance to lateral loading: Design Parameter Value Coefficient of F�i.ction 0.4 Passive Earth Pressure 350 pcf Where: (1) Pef is pounds per cubic foot (2) Passive earth pressure is computed using the equivalent fluid density. We recommend that a safety factor of at least 1.5 be used for design of the foundation's resistance to lateral 7.oading. The site is located within Seismic Zone 3 as illustrated on Figure No. 2 of the 1991 Uniform Building Code (UBC). in accordance with Table 23-J of the 1991 UBC, the site soil profile is best iepresented by Profile Type S1. The nn-site soilb are not susceptible to seismic liquefaction. SLAHB-ON�CiRADE The building floors may be constructed as slabs-on-grade atop the existing soils following the removal of the topsoils. The aubc�rad.e aoils must be in a firm, non-yielding condition at the time of slab coi:struction. Any soft areae encountered should be excavated and replace3 with select imported structural fill. All slabs-on-grade should be underlain by a capillary break layer consisting of a minimum four (4) inch thickness of free- draining granular structural fill �aith a gradation similar to that discussed later in PERMANENT FOUNDATION AND RETAINING WALLS. A vapor barrier such as ¢i 6-mil plastic membrane ahould be placed beneath the slab. Additionally, sand should be used in the fine grading proces� to reduce damage to the GEOTECH CONSULTANTS� INC.