3311 GRAND AVE 2016-01-01 MF Import

� 4 � � 'rT'. q H > H fA y�H K n yro � N il yyH Cj1 O � ONd �/��8 y� V �i zH�aH r hi H ti t] C y t� HO� a ''! �a 4# Auqust 15, 1991 Mr. Bob Norling J� r�w G-0126 Page 5 19 conducted on selected soil samples. The results of moisture content are indicated on the soil logs on Plates 3 and 4. The � result of particle size analysis is presented on Plate 5. DIBCOBBIONB AND RSCOMIiBNDATIONB �� (ianaral Although the soils exposed in the excavation are dense and the cut banks exhibits little sloughing, the potential of soil instability exists as it is evidenced by zones of low soil strength indicated by the probing bar penetration. With the existing house in close proximity at risk, it is our opinion that further excavation into the hillside for the proposed garage without shoring should be avoided. Alternatively, the we:;t garage wall may be constructed in segments with the additional cut to be carried out a few lineal feet at a time. Proper drainage should be provided behind the qarage walls to prevent buildup of hydrostatic pressure. Based on the soil conditions observed, we believe a conventional footing foundation is suitable for supporting the proposed garage. Our recommendations for the proposed garage addition are as follows: 8eiemic Desian ConaiCeratioas The Puget Sound region is classified as Zone 3 by the Uniform Building Code (UBC). The largest earthquakes in this region have been subcrustal events, ranging in depth from 50 to 70 kilometers. Such deep events have exhibited no surface faulting. the proposed garage addition is to be supported on the dense to very dense, (ieo Conaultante inc.