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� <br /> � 7ablc 2. 2006 IRC Seismic Paramcicrs <br /> � � R:eommonded <br /> � — <br /> 2006 IBC Parameler Valuo <br /> Site Ciass �' <br /> E ShorlPenotlSpeclralNesponscAccelc:ahon S;;(pc¢enlg) >>•�� <br /> LSecontlPciio05t�edralResponsnAttclera6on.5,�percenig) 4� <br /> Se��smic CoelLcienl,F,, � �� <br /> Seismic Coofliacnt.F� � �E <br /> � <br /> � EARTHWORK <br /> � 13:,.ed on the subsw'face soil conditions eucouutered in the borings, �ee expect the soils at the sitc ma)' bc <br /> escavaled using conventionsl hcavy dury couslruction equipment. "I'he materials we encountereJ inchide <br /> lill, silt mid clny deposits, and dense ta very dense glacially consoliJated soils. Dense glnci�l deposits in <br /> � Ihe arca conmioniy cuntain cobblcs and bouldeis th�t ma�� bc encowucred during CXC:IVflUOn. <br /> Accordingly,thc contr:ictor should bc prcp;�red to deal with bouldcrs. <br /> 'Ihc rnrsiie soils contain signilicanl tines (malerial passing ihe U.S. slandard No. 200 sieve) and will bc <br /> d highly moisturc-sensitivc and susceptiblc to disturbancc, cspecially �S�hcn wel. Ideally,carlhwork should <br /> j hc undenaken during catcnded periods of dry weathcr whcn thc surficial soils will bc Icss susceptiblc to <br /> dixturbance and provide bcllcr suppon for construction cquipment. Ury wcathcr conslruction will hclp <br /> y reducc emihwork cosls and incrcasc tl�c potenlial for rcusing the glacial soils as fill. <br /> i 'I'rat7'icability rni the site muy be difficul�. even during dry wcather condiiions, due to ihe cl:ry and silt <br /> Inyer neur Ihe existing grade. 'lhe native soils will Ue especially susceptibie tu di�lurbance liom <br /> � constniciion cyuipmenl during wct wcaihcr condi�ions and pumping and rutting o( ihc c�puscd soilti <br /> undcr equipment loads may occur. <br /> q Clearing and Site Preparation <br /> N <br /> 7 Consuvction uP lhc proposcd buildiug will rcquirc dcmolition of tlm exisling parkiug arri and othcr <br /> appurlenanl structnres. Cuncrete smd asphalt may be recycled and reused as sirucuiral fill iu Iimi�eJ <br /> � areas, otheiwise it should bu removed from the site along with other cunstnution debris. 71ie recycled <br /> concrcic ancl asph:dt shoidd bc rcuscd .is describcd in thc scction of this rcporc titled "Rcusc of Gxis�in�; <br /> Asphalt, l3ase and Concrete Rubble" Based on our explomtions and sile obscrvations, we estimate thai <br /> � the asphali psrvement is 55; to A'i; inches thick and Ihe underlying base caurse and/or subbase is <br /> � ;ipproximately 8 to 18 inches Ihick. All existing utilitics shuuld be remmed from the building footprint <br /> and rcrouted if necded. I:xisting utiliiy trench backfill under the building foolprint should be removed <br /> amd replaccd wi�h suUctural till. <br /> � Arcas to be developed or graded should be cicared of surface and subsurface dclMerious matter including <br /> any debris, shrubs. trccs nnd i75SOC181C(I SlUI11�1S 811(I iWIS. Gfil(IC(I areas should bc stripped of organic <br /> � soils. Organic soils arc likcly only associaicd wit6 thc cxisting landscapc arcas. <br /> fhc urganic soils can hc slockpilcd and used L•+tcr for landscaping pnmoscs or may bc sprc;id uvcr <br /> diswrUcd arcas following completion of gnding. If sprend out,the orgunic slrippings should be in a luyer <br /> � Icss dmt 1 (ooi thick, should not hc placcd on s;opcs grc:�ter than 311:1 V, and should be tr.ick-rolled Iu a <br /> unif'onnly compacted couditirni. Materi�ls th;u r.mnut be uscd fur I;mdscaping or protec�ion of disturbed <br /> arcas shoald bc removed frum thc project site. <br /> � ---- -- — -- ------—---- <br /> 1:J„Vn SS?h-(�P'-flU ��AR�'� GEOENGIN8E8� <br /> � .LJv P. :Uilv <br /> I �y <br />� <br />