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Hart Crowser <br /> J-344b-01 <br /> be supported by columns on 20 foot centers under 90 ldp ]oads. <br /> The floor load w�11 be 125 pounds per square foot (ps� storage load <br /> ► The new covered storage area may be eventuaI]y upgraded to a <br /> wazehouse. Therefore, assumed d�sign loads w1] be the same as the <br /> new warehouse. <br /> ► The office annex wil] be consuucted as a one-story wood frame <br /> structure with a crawl space. Perimeter wall ]oads w�l be 3 kips per <br /> lineal foo� There w11 be some interior columns. The total building <br /> ]oad will be 100 to 200 psL <br /> ► The elevator and ]obby will be constructed adjacent to the e.�dsting <br /> two-story o�ce bu�ding. A shaft for the elevator jack wIIl be <br /> constructed roughiy 10 to 15 feet below gade. A 4-foot-deep pit <br /> w71 be dug at the site for tHe elevator. <br /> SUMMARY OF OUR CONCLUSIONS :�'YD RECOMII�NDATIONS <br /> The following summarizes the principal conc]usions and <br /> recommendations made within the report. The text of the report <br /> should be consu]ted for discussion of each point, as weil as for other <br /> recommendations. <br /> Conclusianr <br /> ► Soi1s cnnsist of 30 to 35 feet of loose to medium dense silty sand and <br /> medium sriff to stiff sandy s�7t over glacial soi7s. <br /> ► Groundwater ranges from 4 to 5 feet below �ade. <br /> ► Liquefaction of upper loose s�7ty sands may induce some settlements <br /> after a magiitude 6S earihquake. <br /> Recommendations <br /> ► After demolition and before new filling or construction work, proof- <br /> roll the site and overexcavate so8 areas. <br /> ► Design footings with an allowab]e capacity of 2,000 ps� <br /> Pagq 3`� <br />