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_ J�4�❑ Gcotechnical li.nginccring Date: �I1-22-2010 <br /> � Enginecring& Retaining Structures Project:l3emrose residence <br /> � Consulling Project Management/Inspection �l302 Crescent Ave,Everett <br /> RIISII7Cti5� Inc. Pavemcnf Design &.".oalysis I Cile#: 10001-15R <br /> LATERAL EARTH I'RESSURES: <br /> Laleral earlh pressures are dependenl upon the backfill matcrials and lheir configuration and moish�re content. Thrcc <br /> inch minus sand and gravel mistucs that am Gee draining are recommendecl for backfilling��'alls greater tnan four <br /> fcet tall. Below�rade retaining���alls or�valls designai for mtaining earthen fills on this project ma}'use the follo��•ing <br /> values (or design. Va!aes��•ere obtaincd based on a unit��•eight of 125 Fxf,and a phi angle of 30 degrces. <br /> Earth Pressure Coefficients Earth Pressure <br /> Active,K�: 0.333 Activc: 42 Ibs./fP <br /> At Rest,K : 0.500 At Rest. 63 Ibs./ft` <br /> Passivc,h�,: 3.000 Passive: 375 Ibs./fN <br /> Cocfficient of Friction: 0.40 <br /> GEOSEISMIC SL•TI'lNG: <br /> Poundatinn soils on this sire am detiignaled a Site Class C to D, from"fable"1615.1.1 per Uic 2006 IntcrnaHonai l3uilding <br /> Code (I.T3.C.). NI building struchves on 8iis project should Ix designed per Code Requirements for such a seismic <br /> dnssification. 7'hese h•pe:: of soiLs ha�•e a shear �rave velocit�� in the range of 1,000 to 2,U00 ft/sec. The undrained <br /> shear strength is t}'picall�� about 7,500 psf�rith blo�e co�mis in the range o(I 5-50 bloties per font. ihe follmeing map be <br /> uscd for thr scismic cuc(ficicnls. <br /> De�ipn He�pon�e Spectn�m <br /> Period,T Sa Sds Sms <br /> a �m �I � 0 0.00 33.33 —1 <br /> �" e000 -- — • _:�_ _ - ' 1 To 0.09 8333 83.33 125.00 <br /> ro.00 — — --r— . <br /> �� _�_____�___ � Ts 0.�}5 83.33 83.33 125.00 <br /> so.00 1 1.00 37.33 l <br /> �w.00 — � i 2 2.00 18.67 � <br /> �0D - '�' • • Sds and Sms values gi��en at maY acceleretion <br /> E 20°° -- ; - — • Sml =52, Shc = 37.d � <br /> $ ,o.00 ----i — — — _. <br /> d� o ro <br /> a m o zo n w o so o.eo i oo +*� �a <br /> PMoQ T <br /> I <br /> F.XP�..�\.\� �O\ � <br /> � �,,.,.�...,, .,_ , . <br /> >n,,i.�.,i <br /> r� �n,do.,h <br /> A- <br /> �I� �1itc�:l»�Ilu(- a ' <br /> �� .IIII':IlMII 4 / . Y <br /> Y <br /> ; � ,��..,�u..�,.,,� f t owell <br /> : <br /> I� r��,•�i�..� � I \ <br /> �_ <br /> � <br /> �n,•,i�,.�t�„� <br /> , <br /> ` _ � t 1 . ��� -� <br /> I� >�i.:i.�_.�, � •�` `--...—_ <br /> -- � Phnnr: 'i�i,-;y�� ti�,l9 Pa:: '_;3-ttt'-;�Ib f:mail:Jason��jasonengineeecom Page3of5 <br /> i I'l) liu� Iril Aubum WA.98�1 <br />