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< r <br />.� <br />July 27, 2000 <br />•� � <br />1/81 Se/tsprings DNve • Femdale, WA 98218 <br />Phone (360) 380-2507 • Fax (360J 380•2507 <br />$.L.�. COOStNCfIOQ CO., IIIC. <br />4828 W Glenhaven prive <br />Everett, WA 98203 <br />Attn: Mr. Sttve Jonu <br />Re: Supplementat Report — Geoteehnica! Investigation <br />Relocsdon of Fisher Re�fdence <br />4129 Gnnd Avenue <br />Everett, WA <br />Jul <br />Westem Geotechaieal Consultants, Inc. is pleased to prescnt these supplemental <br />recomatendatioaa for the foundation design of the Fisher Residence, as requested. <br />The atiuctural loading has been determined by Johnson Consultants, the strucwral <br />engineer, to be on the order of 950 pounds pu lineal foot for the continuotu wall <br />footinga. Our original report, dated luly 14, 2000, indicatcd a ettuctural loading on the <br />order of S00 pounds pu square foot. A,v suted in that report, the praaence of very soft <br />Peat soils at the property require the footings to be supponed on pius extending into <br />Sandy soils encountered beneath the Peat layer. <br />z n:. <br />� <br />In order to accommodate the increased loading, we recommend that each of the picrs be <br />founded on a quazry spa►I pad placed in the Send layer. For a pad with minimum <br />dimensions of 2 feet by 2 feet and a minimum thickness of t foot, an allowable bearing <br />capacity of 2500 pounds pe� square foot may be assumed. This cocresponds to a <br />maximum lo4d of 10,000 pounds per pier for piers placed 10 foot on centets. These <br />recommendations supersede the pier design capeciry rewmmendations from our original <br />report. <br />Other recommendations &om the Juiy 14, 2000 report still apply. As indicaced ip the <br />report, we should be pravent at the begipuing of fhe constrnction to verify soil conditions <br />and our dcsign aesumptions, as well as inspect the pier installation. IF you have any <br />questions rega�ding the contents of this repart, or if we caa be of further assistance, <br />please contact our office. � rr�-".�te <br />Sincerely, <br />Western G. eehnical naultanh, Inc. <br />.�'~� <br />Theodore A. Hammer, P.$. <br />Geotechnical Engineer <br />Far;�+�S i v7 av <br />cc: Clark 7ohnson, Johnson Consulting Fsgin •-� ��n <br />