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HomeMy WebLinkAboutPettygrove's 1st Block 18 Lots 5 & 7 - Pre-Design Geotechnical Engineering Evaluation 2005.06.15f^.k"-,i B;& ?Ru-os 'a>l PRE.DESIGN GEOTEGHNIGAL ENGI NEERING LUATION Jackson Residence Fir and K Streets Poft Townsend, Washi ngton June 15,2005 Prepared for Jim Jackson EICIEff\{EfnlIt{ il riiiliii ili-r Li iuli 1 6 ;:;ii ili! urf i-iill ICiliisiiiD i1:, i.' oeoTe9T 741 Marine Drive ham Washington tll! , 'i Bel .jul_ i $ :ui]7 Mtw oeoTe9T 741 Matu€ Drive Eellingftam,\rr{A SA5 n&e ta4 mtE FAX360?3s_73r8 8f€ 261_5276 360733_7418 June 15.2005 Job No.5319 The Jackson ComPanY 211-faylor Street#358 Port Townsend, Washington 98368 Attrr: Jim Jackson Re: Pre-design Geotechnical Engineering Evaluation Jackson Residerrc Flrard K Sbeets Port Twnserd, Yllashiqgton Dear Mr. Jackstrl, As requested, GeoTest Seryices, lnc. b pleased to submit th'is report summarilng the 'orte of our pre-des'rgn geotecfrnical erlgineering e\taluation for tre refurenced prcject Th; prtp"* it tni" "i"ni"tion rrras to estannsh general subsurface conditions beneath the site'from which feasibiiity level design can be accornplished for site development' ffi-;;d "ft"utO be considered a uorkirg document _sgme of the condusions and recomrnendalions presented herein may require ranision as the proiect design progi""r"". Ourscnpe of sewices inchrded the folhwing tasks: . Exploralion of soit and grounduriater conditions underlying the site by excavating exploratory test pits to Jvahete subsurhce soil condilions. . Laboratory testing on representalive samples in ordel to classifiT and evaluate the engineering characterislics of the soib encountered' . provide thb written rBport cgntair$ng a descriplion of sr:bsurftace conditions, trest pit logs, and lindirqs and recommerdations pertaining to environmentally fu*'itil" areas (ESA's) as per the -Port Townsend Municipal Code, site preparation ard - eartfwrork, fiil and compaction, foundalion support and settleme6t, temporary ard permanent stopes, site and foundattrns drainage, seismic design considerations. and coftstrucf,ion phase geotechnical services- PROJEST DESCRIPTION We understand that the su$ect properly is beirg considered forthe development of two single-fami[ resilences udtt urood frarne construc{ion. Th€ property consists of two adj-acent rdtangular lots, Lot 5 and l-ot 7, rrytth ptan dimensions sf 50 feet by 100 feet' ThL proposed aiquisition of an aditional3O0O square foot easement to the south of Lot b has been included in tre pretimirary design. At the time of this report, only preliminaiy and limited inforrnation was avaflabb aboL* propased building locat'tons, sizes, JnstuAion, or foundation loads. For this reason we have limited our geotechnical recommendalions to a feasibility level to be used in predes!]n of the proposed Olvefopment GeoTest Servicas would be pleased'to provide furher design level recommendations as the protsct progresses. I I Page 1 of10 r.W,geotest-inc.com GeoTesl Sewices' lnc' J"*son Resldence' Port Tswns-€rd. utasftktgbo June 15,2005 Job No. 53'19 SITE CONDITIONS .This saciion discusses the ggng{ surfa€ and subsurface conditions observed at the proiect site at the tirne of ouifietO inrrestigation. lnterpretatbns of the site coriditions'are based .on the resull-oi our revieilr of anailable 'urformation, site reconna-lssance, rr[""*."t explorations' and laboratory tes-lirg' General Geologic Gonditions Geologic inlormation for the proiect site was obtained lrom the surfrcial Geologb Map of the port Townsena {u ni6ilUi7,1tu A;&^*t, Crp"!^So*d Region, Washington (pessl, Jr., et al., t9d6), -Oy$ry. UV nreU.S. 6""fogiot S_urvey. According to Pessl, surficialdeposibinttevicinityof-thep-i""tsitep.1rsis!.ofQuatemary.ageglacialtill,a poorly sorted mixttrre of rocf iragrnenb ieposlteO dire{fly by the:VashorFage ice sheet Finer. component* ilJud; ;',ft, iand, and chy in variabg. proportions, constiturting a coherent to triaul.,'ToaeraLry-lto' liehlv cgmpact- m3trix ra whigh -the marser ffiffiil; Gfi-l;; ;#t;; ano r;utiers) ire itilmty embedded- Deposns are typically non+tramJ, UJ suptlortzortt"i fip i"g ard fissile sructures are localfy well developed. fnicrrfi ;6ti* rom a reurn1iters ib as mucR as 40 meters (Pessl' Jr" et al., 19g9). conditlons ;;;;*d $rithin the eptnrations were general$ consistent with the maP@ geology' Surf,ace Condltlons The site of the proposed improvements consists of ry9, undeveloped' approximately 5000 square toqt r;;ttgur"t r,ts ard jncludes fte 3tlo0 sguare foot K street right-of- . rnEry to the "oun oilli=s. bi.gl*f"*ily res-xience:. b"td"l the subpct property to the nortkr and norneast, FiiSt*"tfilne te'property to *!e wesl and undeveloped bts exist to the south and east' The pmpertf i" curre"W forested with rnoderate u6derbrush. S"u"oiO"un1"" ni tt"o.t"ititf, Uy un x"e sbpel have apprently been . btown down within the past ien years, possibly duiirreL tha sarp storm event based upon ;;i#i*'v'li;;;;";fi;'ing a;o mo.i gro'ith o\seryeo on the exposed root svstems and trees. The site consis6 of a wesiern iacing skrpe with an average measured *:l:lT:#[ggn*crng- no l-p1pi-.{rrriarcry+ mfrtUn=iffiAffiait}re roau-e'iita-Fii'slibet, at .the southern approxirnately half of tfe propJrry, 9Io{+. 40 percent slope' Surface water wa" not "n*uni"ttO "i tt u site at-the tirne 'of our field investigation' Subsurface Solt Cond itions subsurhce conditions at the site were elqlored using a-.Dynarnic cone Penetrorneter &fi;GiunO LV'&L*UngranO ""tpiitg four test flrts trsing a hand auger on Mav 13, 2005. A DCP probe includes recordrng thl number of blows necessary lo advance a p"i*"d =t"el rod fi,o th" grountl with a 3E-pound drog Qpmer' The blows necessary to adrrance the rod into de soil have b"d conelatei with the density of granular soil deposits and the consistenoT of cohesive soils' The test pits and DCP tests'were advanced at locations spread across tre proposed develqped areas. i*t p,t= {HA-1 through t-[A-4] wegglcavated to depths of about2.5 to 4 feet below u"isting irouno tutr""e iees) 'rn" DcP iests (DcP-1 through DcP-4) Pqe2atlO @oTest Services, lnc' Jackson Residerce, Pori Tovrren{ tJv*ttit6b" Ju-re 15,2005 Job No- 5319 were advanced to depfihs of about 3.5 to 5 feet BGS. The approximate locations of the test pits and DCP tests are shown On fu site. and Exploration Plan' Figure 2' ' A discussion of lielct e;;Etion "ru r*oo*tory te_st procedures, together with edited logs ;iil;& pit" and DcP r€6ults, is presented in ApperdixA The subsurface conditions were relatively consistent-within ttn deptrs explored during our site subsudacei"n"L"t"ti=xion' i11e subsurface profile generalty consists of organic topsoil *.tryi^g gilty sand over natire glacia!till... TIF topsoil encountered was compo$d of loose, 'Jaft U-'rn, damp, orga*c]sarrdy sitt fhf ranOed in thickness from 2 inches b 18 inc*res BGS. UndertylrE fre topso'itwas a krose to medium dense' light brown to reddish brown, damp, s6ty sar6 "riif, tta"e gr-avel that extended to depths rangins betyyeen 1.;;; a-tu t BGs. Ur6eJvhg 11ie ilty sand was native glacial till composed of very i*n*", L."rn, t+ g.gfi,-"1 1lly-ngt.damp' slighty gravelly to g;vefiy, silty sand that extended to tte full deptB ol expnraoon' . Results of the DCP anatysis indicate tlmt loose to mediurn dense soils were encountered to depths "r "pp-x#irrv i.l t".3 feet- Below these depths all of the.explorations encountered tr* ,no"tfvlnil, t"ty dense rln- n1 of the DcPtests terminated within the encountered unoerr-in6 ii*i"i ut. Detalled logs of the subsurface conditions encountered at the J*pior"-tl* 6cations are pt"sented in Appendix A attached with this rePort. Groundwater f:,'tsK"Tl,ililTitr**#ffi iQ"ffinl. fu grroundwater conditions ;;;rfiffi *";ffions and dates indicated, and therefore -uv not *&riil be indicative oi other locations andlor limes' Groundwater levels are not static and it is anticipated that groundwater conditions will vary depending on localsubsurlace conditions, s€ason, p*J'pt"ti*' d.llges in site use' both on and off site, anO ot"itaJors' Due to tne" Ue?': s-qgq9-$l#9ggsil encountered in our explorations,'we wotdd expect that-a re lcl"T rrtte . encountered wifllild; fip.t"d develipmeni on try'ploperly' However' the till soils will support percfred near'surfacb water that results form infiftration of rain ard/or introduction or su*al water by other sources. Groundwater seepage "lop ll? till layer or wjthin sardier t** witld tF till soils shouH be expecied throughout the wetter portions of the Year- CON CLUSIONS AND RECO}'MENDATIONS Based on the results of the field expbration, laborat"w te*tlng' ."ry .preliminary' engineering "*G;--perrott"o, T T our op'inion that development of the subiect property is feasibl-e-i"i* " g*t"*tnior p.rsp""tine, provided the recommendations presented in this ;;i ;;y p"i*ta suosequeni reports are implemented during design and consbuction. Preliminary recor4mendalirons retated to Port Townsend Municipal code geologimlty h;;;;;reas, site freparation and eartrworl( foundation support and seftlement, tempOrary and p"ttu*nt *iope., stte and foundation drainage' paved areas, seismic *""io"titi"ns, and construction phase geoiechnical services are presented in the following seclions Page 3 of 10 GeoTestSeryices. lnc- Jackson Residence. Pori Towrsend' Washirgbn excavation acitivities June 15.2005 Job No.5319 GeologicallY Hazardous Areas The subject property falb under the classification of3 qeologically. haza sarea, as deftned by port ro**"nJ'-uunl"ip"r code (pr1,{c}, section 19.0s-100, due to the p**"*"k glgpes oieatet than lLpe[eqnt analbP f'reserr€pf Lmgermeahlp Spils' frth;;gh th"@ined during orrerploratbns class8 the soils ;; ;ld r;nd", th" nres content and in-place densitf- of tl* near surface tlll soils g""L;rrresuli in u r"r"tio*ryftnpermeable condition. Ba5gd on our evaluation of the' property, it appears that x.te -exisii"g property sqne+-oenerallv ?t9,bl9 with no signs of;r*;;n;j1i"r*i" J"H,L#S*$ greater than 40 p"ront- Upon complgtion of d1e popaseo driveway entrance at the southwest coffFr ot'rhe bt, this arsa should be sufficienttylitigated {!n thluse of a ;'ffi;;;;;tl. "nO gLdi"g'sucfr that the presence of an ESA gleater than 40 percent slope will not exist. W"io not believe'the subie* properly contains envirohmental sensitive areas "p*m" io g""@icarrv n@oda+qsir€*$i€{ed jevelof..nento. aFPticahle-hr'ffp'd LLaccordance with PlldC' It is our opinion tlgt tte proposed residentiat develnpment shorld not advercely afrct ;t'"fi"g siie condition= d"uii"O standard best man4gement consbuction practices are in*tpJr"tuU into the 'A*tign and constnrction, i'e.' the use of retaining walls at ippropriate stope cuL *J "nii., "ttpping and bencfring foundatbn elements such that iiiJt-ff;;n *lit"ot" tilt soits ano iGt Jite drainage b directed inio suitable dischargn areas. Slte Preparation and Earthwork proof rofiing shoutd be carefully observed by qualified geotechnical personnel- Areas exiiuiting ignificanr don6cfp;, pumprng, or over-saturation that .c€nnoi be readiiy ffi;;;d itrould be overcxcarrateo tJ firm soil. overexcavated areas should be backfilled with cornpacted granular material placed in accordance v'rith subsequent recommendations for skuctural fdl We recommend that site preparation and earthwork operationb be limited to the summer ,no *"rf' fu[ rnonths. 'li x1e contractor attempts to prepare and qroof.roll subgrade soils ffi"g the wet winter months, or during per'rods of extended rainfall, the -subgrade could """ify O**me disturbed. Once disturbei,-especiatly during the winter rnonths, it may be necessary to remove in" upp*t portipn of tt'e subgrade soil aryd replace with imported Pag€ 4 of 10 June 15,2005 Job No.5319GgoTestSs\rlc6, lnc' Jackson ResHence. Port Towmend. W*l*ngbn Structural fill should.be placed in hodzontal lifb approximqtety.6 to.8 it"Lt: in loose thickness and thoroughly compacted. All sbuctural fill placed under building areas "f,""iJ Le compacteOlo it easl gS p€rcent of the maximum Iw 99trtty' as determined ;;'r; t*t metirod ASTM D 1557. in pved are?9, !e fill.9r,tould be compacted to at leas[gZ percent, except the upper 2a inctres of subgrade, uthich shou6 be compacted to a minimum of g5 percent of mixi,murn dry density. We recommend that compaction be testeO after placement.of eactr lift in tre fill pad' Foundation Support'ard Seiltlement iosedSoil c-onditions observed in the exploratigns located within tlre areas of prop irfrourrn.nts consist of a relativdy shallor loose to medium dense granubr soil ""lrfyi* r"w dense glacial till. ior the residential buildings, as proposed, we recommend that fourdaiion support be derived hom the det*e to very dense glacial till soils locatd at a depth of approxirnately 3 feet BGS' granuhr material. Such measures could s'gnificantly impact both the construction budget and scfredule. Filtand GomPaction Structural fill used b obtain final elevations for soil--supported floor slabs and pavement sections must be properly placed and compacted' ln general, any suitable, non-organic' predominanUy granular soilrnay be used forfillmaterial' Areas of unsuitable soil,or soil that cannot be recomPaded should be handled according to the re@mmendalions of the Sile PreParatbn and Eartworl<. sec{ion of this report.All perimeter footings should be founded a minimum of 18 inches be{ow the Iowest adjacent linal grade for freezelthaw protedicn. For pretiminary planning purposes, a maximum ret allonrable soiFbearing pressure of u5o,i Z,SOO pit coutO U-e'assurneO to estirnate the s'ze of spread and strip foundations that would bear on sjit"Uty prepred native soil cuts within the underlying glacial till encountereO at the site- 'Tire term 'net allowable bearing pressure' refers to the pr"our" lhat can be imposed on the soitatfurndaQn p.vel reulting from tre total of all beaO ptus live loads. eictusine of the weight of the footing or any backfill placed above the footing. S6tilement of shaltolv foundations depends on foundation size and bearing pressure' as well as the strengrth and compressibil'tty characteristft;s of the underlying so'il- Assuming construclion is -accomplished as prevbusty. recornmended -and br the rnaximum "ffo*rUf" soil bearing presaure recom*"rded above, we estimate the totalsettldmentof iuilOing foundations sfroutO be less than about 1 inch and differential setlement bepg; two adjacent load-bearing components stpported on competent soilshould be less than about-Tz inch. The soil-response to ap$ied stresses caused by building and other loads is expec{ed b be predonrimbly elastic in nature, with most of the settlement occuning durirp construclion as loads are applied Page 5 of 10 June 15,2OO5 Job No,531SGeoTest Servicea. lne Jac*son Resldence. Port Tsrrrserd. Wastfrgbn Temporary and Permanent SloPes Achral constructbn slope configurat'Hms ard maintenance of safe working conditions, including temporary excavatbn sbisty, should be the r€sponsibility of the Gontractor, ;h" i" iut" to mo;itor the construcrid adivities and has direct control over the means anJ mettroOs of construction. All applicable locat, state, and federalsafety codes-should lu tollor"o, All open cue should be rnonitored during and after excavation for any evidence of instabilry- lf instabilry is detected, the contractor- should flatten the side slopes or install temporary shoring- Temporary excavations in excess of 4 ff shouid be shored or,sloped in lccordance with S;fety Sfandards for Construc{ion Work Part N, WAC.296-15ffi57' Temporary uniuiported excavations in tre medium den# sand generally encountered in the upper o tlJ'at the pmject site are classifed as a Type C soilaccording b.wAc 296-155-657 unJ ru' m lfoiet ai steep as 1\tilH:1V. T6mpoffiry unsupported excavat'lons in the 0"n"". io u"ry dense till soits typ'rcally encountered about 3 fedt below ex'sting site il&'il "t*muO "" . ry'p6'A sdn accorCing'to WAc 296-15ffi57 and rnav be ilopeO as steep as"/c1q:1v.- All soih encountered are dassified as Type ! sgil in the pr"llno of groundtnater seepage. Flatter slopes ortemporary shoring may be required in ardas where groundwater tiow i" present and unstable conditions develop' We recommend that permanent cut or fil| sbpes be des'gned for indinatlons of 2H: 1y..", / -flatter- All permaneni *t "top*s should_be vegetated or otherurise protected to limit the poi"nri"f for erosiqn as soon bs practical after cons{ruction. Permanent slopes requiring i*pOi"tr protectlrrcn from the eifects cf erosion sl'ould b covered with either mulch or ;;;;i"; "ontrot nettingrlblankets. Areas requiring permanent stabilization should be seeded with an "pp.itO grass seed mixture, or hydroseeded with an approved seed- mutch-fertilizer mixtur€. Resistance to l-ateral Loads The lateral earth Pressures that develop against subsurfiace building and retaining nllN t) wilt depend on the method of backfill placement'degree of compaction, sloPe of type of bad<fill material, provisions for drainage,rnagnilr-lde and location of anY surcharge loads, and the degree to which the wall can yieH bterallY during or placement of bac*fi||. lf the waH is allowed to rotate or yield so the bP of the wall moves an amount equal to or gGater than about 0.002 times its he'rght (a yielding wall), the soll pressure exerted u,ill be the ac{ive soil ptessurc.When a subsurface wall is restrained against lateral movernent or liltin$ (a nonyielCing wall), the soil pressure exerted is the at-rest soil pressure.Wall restraint rnaY devekrP if a r[id structtrral network is constructed prior to backfiHing or the wall's inherenilY sffi. We recommend that yieldirrg walls wittr level backfill urrder. drained conditions be designed for an equivalent fluid Oensity of 35 pounds per cubic ft FcD for active soil coniitions. Nonyielding walb with levd backfill under drained conditions shouH be designed for an eqtgvient frrid derlsity of 55 pcf for at-rest oonditions. Design of ruUJurfr"" qralls sliould include appropriate tateral prqssures caused by surcharge ' loads located within a horizontal distance equalto or less than tre height of the watl- For uniform surcharge pressures, a uniformly dstributed lateral pressure equalto 35 percent ;d S0 perceniof'the vertical surcharge pressure -should be added to the iateral soil pressures for yielding and nonyielding walls, respecdively P4e 6 of 10 GeoTest SeNbes. lnc Jackson R*idence. Port Twrnserd' lifasftirqbrt June 15,2005 Job No.5319 Lateralloads may be resisted by passive earth pressures developed against the side-of the foundation. for Ceslgn pinpr*", the passir'.e resistance of well-compacted fill ;i;JA"inst the sides oithe foundations may be considgred equivalent to a fluid with l.Oensitiot 2S0 pc-f. A safety fastor of 1.5 i6 induded in this design value. This value "*ru*"i drained conditiorn iirt *iU pranent the buildup of hydrosHic piessure in the *rp"AJ ml. These valr.res are based'on the assumplion of a horizonbl surface of at 6;;i, fimes ihe Oepn of ernbedrnent in the direction of movernent- The upper 12 inches of passive ,=*Lt"n"* shoup be n€g'1'cted if the soil is rot covered by fbor slabs ;; p*#,r1 lf future plans call for the removal of the soil providing resistance, then the paisive resistance should not be cons'xlerd- Go ncrete Slabs-on€nide Conventional slatsorrgrade floor tpnsfi.rction is considered feasible for tie planned s'rte i'#;;*r. Floorlhhs may be supported on properly prepared native subgrade or en compacted skucfural nn pdced over properly prepared-native sub-grade' Prior to pi"."*dnt of the structural fiil, the subgrade should be proof-rolled as recommended in the Srte Prepantion and Earthworkseaion of this reporl We recommend that interior concrete shfon-grade floors be underlain by-a minimum of O in"ft* of **p""t"d, clean, freedraining sand and gravel with l9ss. thg1.S.Rercent ;";rirrg G U.S.'Standard No. 200 siwe (based on a 1e^! lieve anatysis of that portion ;ili"g the U,S. Standard No. 4 sieve! The ptnpose of this layer is to pnovide unifrtll ilffi ior ttre slab, provide a eplllary break, and act as a drainagre layer- To help reduce the potential"for water \rapor miTration tT"ug-h.fuor slabs, a continuous irpl*""Ule rnembrane of 6; to 10-mil polyethylene sheetirq with tapecealed joints can be installed below the slab. The Arnerican Concvete lnstitr.rte {AGl) guidelines suggest that the slab may either be poured directS on the vapor retarding membrane or on a gi;nrhr curing layer placed over the vapor retarding membrane depending. on ./ ionditions anti-cipaled during construction. We recommend that the architect or -/ structural engineer specrfy if a curirrg layer should be used' \ JtFn rnoisfure control within the buitldirg ii crttical, we re@tTmend an hrspeetircn of the vepor retarding mernbrane to verifu that all openings have been properly sealed- Exterior concrete slabsopgrade, such as skJenrraH<s, may be supported directly on unOi"trtUrO, suitable,.nativJ soil or on properly placed and c-ompacted structural fill; however, long-term performance will be entrirrceO'if exterior shbs dre placed on a layer of clean, durable, welldraining granular matorial- Foundation and Stte Drainage To reduce the potentia!for groundwatei and surface.water to seep into interior sp.aggs we recommend that an eit"tior foolirg drain qlstem' be conslructed around the perirneter of new bui$ing foundations as shown in the Typical Footing and Wa{t Drain bection, Figure 3. The drain should consist of a minimum 4jnch. diameter perfonated pip", =inoJnded by a minimum 12 lncfres of fittering media wlth the discharge.sloped to carry water to a suiUable coliection system. Ttie filtering media may consist 9f open- gLdeO drain rock wrapped by a nonwoven geotextile tabric (s!q as Jrdirafi 140N, Synthetic lndustries 3511, or equivalent) or a graded sand and gravelfilter. Thed-rainage backfill should contain less lhan 3 percent by weiTht passing the u.s. standard No- 200 sieve (based on a wet sieve anakysis of that portion passing.the U-S- Standard No- 4 P4e 7 of 1O GeoTest SeMces' lnc' June 15' 2005 Jack$on Resldence. MTormsend. Washirgilon Job htr' 5319 sieve). Thd invert of the foofing drain pipe shouH be placed at approximately.the same elevation as the bottom of the footing or 12 incies beLtw the adiacenlry shb grade' whichever is deeper, io ftd waterwit rnt seep through walls.or floor slabs' The footing drain should discfrarg" io .t approved drah system ard indude' cleanouts to allow periodic maintenance and inspection Positive surface gradients should be provided adiacent to. proposed building-s to direct surfiace water away frorn the fourdatircn ard towird suitable discharge facilities' Roof Gi;;;" ;trouH not be infoOuceO into the perirneter footing drains, but should be =rprrJt"ry disdrarged dfedy to 6.,e stormwater-collectftrn systern or otlrer appropriate ouflet. pavement.no "lor"ln.areas should be sbped and drainage gradients should be maintained to carry alt surface water away from tfe buMing towards the local stormwater colbcfion system, Surface nrater shoU$ not be allowed to pond and soak #;'th";;;;;tf# near buildings or paved -aryas during or after con'struc{ion' construction u**uxions should be-sloped to draln to sumps d:T.*"i:1.fro* o"p"d, Linfull, ard runoff can be coltected and pumpd to a sultable d*cnarge facility. Due to the ericounterd loose to medigm dense near surface granular soils oveflying a dense to very or*e, relaw.y impermeaue tilldeposit special attention shbuld be paid t" ih; JiuOrirg" of *ite Oraiiinge indding roof downspouts and impervious surfiaces- The introductircn of excessive- water ini tf," neai surfae soils withor'rt adequate Oispelion, vegetation cov6r or soit support may incfea-se tre fvel of ilsfUitiV within the near surface soils- For this reaso{t we recommetd ttnt drainage disctrarge 'Ti: * ,/ litf,'"tspreaO ttrroughout a irany,difbrent areas of the pPpery- T lt?9i!l? yZ I i"ri"unb oimse *6 captureo -n6tr or be directed into.a..lultably mitig4ed discharge . area ilrat will sufficie"ti, r"ou". the opporturxty for initia6ng instability- Suitably mitigated discfnrye "to" may irdude roO< difiusion areas, soil improvement zones oons'rsting of geotexlib reinfolcenerrt such as g"99s and/or the use of permeable p"u"r"rit ri"i"rr. ; pr";'tble sol! ieinrorcement drainagre system using goecells, such as Miraweb by Mirafi, L depictd in the Proposed Storm Drain Discharge Area Detail' Figure 4- Paved Areas It is anticipated that Paved driveways and Parkitrg areas with typical pavement sections could be incorPorated ints the development Plans for the subiect ProPerlY- SPecific locations for these imProvements were notfinalized at the time this report was prepared. Prior to placernent of subbase materials, all pavement subgrade soil should be Proof rolled in the Preaence of guaFfied geoteciniCal personnel.Any sofi aroas identified should be overexcavated ard rephced with Profer!cmnpacted structural ftll or subbase materials. \ /e recommend that areas to b€ paved be developed during dry weather, if feasible.F it is not feasible to wsk during perids of dry weather, an additional'layer of granular subbase dr crushed rock may need durirg pavement subgnade preparation. Seis mic Desig n Considerations The pacific Northwest is'seismically active and the site could be subject to ground shaking frorn a rnoder:ate to maioi earthquake; Corsequently, rnoderate-levels of earthqiake shaking should Ue anticipated during the desigrn life of the project, and the Page 8 of 10 GeoTest Serra:ces' lnc. JaclGon Re€ldsnce. Pst Tovrinsend' $iasinngilort proposed buildings sirould be designed to resist earthquake loadirrg using appropriate June 15,2O05 Job No.53{9 design methodology' For structures designed using the seismic'design provi.sions of the 2003 lntemational Building Code, the very dense, sitty sand-soils (g-lacialtill) interpreted to underlie the site ;-6.,*;pp*lOO f"A O"ssm& "" Sit" Class 6, very de'oe soil and soft rock profile' ;;;di"g io sit" ci"" Gnnmons, TaHe 1615-1-1' The conesponding values for calculating a design ;-p"-* "p"cfum'for the assuined soil profile type is considered appropriate for the site- Geotechnical consultation and construction llonitoring GeoTest SeMces recommends that a geotechnical familiar with the Project ltengineer design review the earthrrvork and foundation portions of the design drawings and of the revieve is to veriff that the recommendations been pmperlY interPreted and inmrporated in the design We recomrnend tlrat These specffications. The Putpose presented in this report have and specfficatbns, services for You- USE OF THIS REPORT GeoTest Services has prepared this report iorthe exgluSiv.eyse of Jim Jackson and his J*"id *;uftants for'use in evaLraling the geotechnical fuasibility of developing the ;biil p-pertv ror "ingleramlv **io*tlal homes- Any use of this report by others, or tor'p-urrio"rir oirtrr ttan inten&d, is at the usels sole risk- within the limitations of scope,'scnedule, and budget, our servic€s haye beq conducted in accordance with g""ti"fly rccepteO J" *.j*tion prac{ices of the geotechnical engineering profession; no other warr€lnfy, ""ir"o or irnpfed, is made as to tt* professional advice included in this report. The preliminary conclusions and re'commendations contained in this report are based on the explora'tions compteted for this study. There maY be some the iite, and the natre and variation in subsurface soil and groundwater mndilions at extent of the variaftons may not become evldent until consfiuclbn. As the proiect enters the constuc'tion stage and building foads, buikjings ard parred area locations, and final grades have been delined, GeoTest $ervices shot-*d be advised so thai we can review our Prelimi recommendations to see if theY are conslgtent with specific prciect plans' \ Page 9 of 10 () GeoTestSeMcs. lnc' Jackson Residgroe' PortTovnrsend' Wast$ngbt slV--*- June 15, 2005 Job No- 5319 we appreciate the opportunity to-.provide.geotecfrnical services on lhis proiect and look forward to assisting.fi" o*ii,o ti" **ri.rction phase- tf you have any guestions or comments regnrding'th"'i"t"t*"t* contained in this report' or if we may be of further service, Please call- Respectft:lly Submitted, GeoTest Seryices,lnc; David Jellum Staff Geologist M Dan Sorenson, L-E.G. Licensed Engineering Geologist Attachnrents:Frgwe 1 Figura 2 Figure 3 Figure 4 AppendixA vicini$ Map Sihs and ExPbration Ptan T)?ical Footing aird Wall Drain Seclion P;oosed Stom prain D{schargp Area Detail fiefu exporators and Laboratory Testirg REFEREHCES Frsd Pes6l, Jr., D-P. DslhEr, D,B, Boofil, and J-P. Minard- tgsg. $urfidal Geologb Map of the-Port f*,nu"nA g&'ny O+fU'tlG O;"ffiSh, F,A"t S*1tA Region, WaSlringtur' U'S' Geological Survey' Daniel J. Sorenson Page 10 of 10 PROJECT LOCATTOX NORTH referenc€ map: Mcrosofi Streeb 2004, Be$inghen rsil il ! I I I r: By DJ Scale: NONEDate: 6-17-05 Proiect 5319GEOTEST SERVICES, lltE 741 Marine Drive Bellingham, WA 98225 phone: (360) 739-73i8fax {360} 733-7418 Figure 1 VICINITY MAP Jlcxsox Rrsloexcr FnaHn KSTREETs PoRr TowHsrNDo WASHINGToN ,*'(r*s*l tB!{'a*t'f I l.t Lr'3 ?-. Ldf 'l - LP[S_ .0 ,1 9,e,d-r ^5' L -fr I .t t Ir I I -\ItFt .- I -t- l--rT-a- I I --t I r \l 1\/l. I/t1 I.t .{<-\ -t\ \tl1 t' I I i I I I I I +c. 4" .4. I I1 b']t 'MrE: 8Elf^|'# | ,t g'4'@.mrSE tngoF.tq* F 3 a'hlS 6At --'--!t -<n' aNeg o&r{E or Ri-" NORTH ! = trpproxlmab Exploratory Locations Reference MaP: RiverDesign ;?r.4 ^rErW -F;?G${f ,#l04 r*Ps/rtr;srfltrtgl- - gcl - I F.- I ---- I-l.- e - -.** '- -wrs](e-frc<?tru{ sra S Scale: NoneBy; DJDate: 5.1N5 I Projecl 5319 Figure' 2 SITE & EXPLORATION PLAN Jlcxsox RrslPExce Fnruo KSrneers Ponr TowxsEND r WAsHINGToN GEOTEST SERVICES, I}8. 741 Marine Drive Bellingham, WA 98225 pbone: (380)73$7318{s* (360)733-7418 ooo o Goco o o^o o o o Iooooo ooo o o 9 oo pea oorgooooo O6 oo i (arain rocl< DRAhIAGE I$ATERIAL CoMPAGTED {SILTY} SOIL OR CONCRETE ORASPHALT PAVEI'ENT (12 indres minirnum soil thlckness, 2 inches for concrete or asphalt) APPROPRIATEWATER PROOFING O}I OUTSIDE #fFACE OFUT'ALL Native Soil # sts GEOTEXTILE {( 'nf FILTER FABRIC (tlirarff 14ON, Am6co 4545 or approved pe rformance eouivalent) (t'g incies'nrldmum fabric lap) FOURINCH DIAIilETER, PERFORATED, RIGID PVC PIPE {perforations orienbd down, wrapped in non-woven geoteldile frltertaU*c, dverted to suitabte discharge) By: DS Scale: NONEDate: 6-1545 Proiect 5319 Figure 3 TYPICAL FOOTING & WALL DRAIN SECTION Jncxsox ResrogNce Fnlxo KSrneers Ponr TowHsEND, WASHINGToN GEOTEST SERVICES, INC. 741 Marine Drive Bellingham, WA 98225 phone: (360)73$7318tax:- (360)733-7418 Plan vierlrr of Geocelt section Replace bpsoil across tops cf cdls to match existing grade Rock dffirsion irfiiltration area attop of reinforced ane EffiFg Sbpe 4'to 6'.min. J Drain lines from footing and Downspouts Proposed Drivaaray q Existing contact be&veen surface soils and underlYing tlllsoils Hirtive Tll Soils Fir Sheet Note: eeocett sec{ions stacked upon each other eaclr po*lon of cell srlions qrt and berdred lrrto suitable till soils. Lro#1*O surficialgranular soils replaced back into each cell'layer. c-"""dr section t"ns$r recornmended to be a minirnum-of 4 to 6 feet dependirg on soil hyer thickness encountered' This schematic is for visual reference only- lf this qntenr is to be_induded into actual construction for the project a specifrc desi6n wor:ld need to be field fit based on the concept oi the compfeteO p-.t""t, aaud site dimens-pns and consbainb and the quantity of water andcipated. Scale: NONEBy: DrSDab: &1$05 Projact 5319 Figure 4 STORM DRAIN DISCHARGE AREA DETAIL JecxsoN RESIDENcE Fnnno KSrnerrs Ponr TomrsEllD, WlsslxotoN GEOTEST SERVICES, R\8. 741 Marine Drive' lellingham, WA 98225 phone: (360)73$7318. fax: (360)733-7418 AP PENDIX FIELD EXPLORATIONS AND LABORATORY TESTING APPENDX A FIELD B@LORATIONS AND I.ABORATORY TESTING Subsurhce conditions at the site were explored on May 13, 2005. The exploration o[9;; consisted of excavating and samsing four test pits using a hand auger (HA.1 ihdih HF4) and advancing atynamic cory peneforneter (DCP-I through DCP-4) at tte aiproxirnate localircrs illistraed on the Site and Exploration Plan (Figure 2 of this *p,"ifi -ff," test pits were explored to depths of approximately 2:5 tD 4 feet below fiunj "rrf"o GGS) and the DCP probe uras advance to depths of approximately 3.5 i"-g ll"i nCS. Our explorat'ron pr6gram was bid out based on the proposed site irpro*r"nts provided ln a site ifcetcn provtOeO by-gryr client The expbrations were i",irtla in ,tr"'fi.t0 by taping and pacing from existing properly comers and other i""i"*, tno*n the ieferenced pla'n. Exptora{ion localions shouH be considered "r*r"tu to the degree implied by the methods used. Ground surfrace elevations at the u*plo.ution locatiois were estfunated'based on surface contours shown on the above referenced maP. The field explorations were coordinated ard monitored by 9n engineerlng geologist from our staff wiro obtained representafive doil samples, maintained a.detailed. record of observed subsurfece soii and groundwabr conditions, and described the soil "n*rntut"d by visual and texhrral examination. Each reprwentative soil type observed was described using the soH dassificatircn qnstem shoyl 9n Figury AJ' in general ;;A;; *ffr asiu D 24s8, Stardrad Reammended Pracrice for Description of Sii" fVi"i"t+rt""ua! prwdure). Logs of the bsf pit explxations are presented on Fbuig5 A-2 and A-3. These logs repiesent our inierpretation of subsurface conditions iAJntineo during trre field expro""rions. The strati.graphic contac{s shown on ths irai"iJra test pis 5gs rcpresent the approximate bourdar'res betuveen soiltypes; actual transitions may be niore grradual- Abo:the soilard groundrrater conditbns.depicted are ;iy 6; ih" up""m" daie and bcatiom reported, ard therefore, are not necessarily represeniative of other locations ard times' Representalive soil samphs encountered in tet pit explorations were obtained al selected intervals, placeci in sealed plastic bags, and transported to our laboratory for further classification and tesling. Laboratory tests were performed on-repJesentative soil samptes to charactertze certain physical properties of the- site soil The laboratory testing progpm was limited to visual inspection _to gonfirm field soil descriptions, Olt"ri-*nati6n of natural rno'rsture content and soil grain size disbibution. The natural moisture contents of selected soil samples were dete,rmined in general accordance with ASTM D 2216 test procedures. The results from the moisture determinatons are indicated on the summary logs, adfacent to tJe conesponding samples. Grain size anallnses sf selec-ted soit samples were conducted in general accordance with ASTM D 422test procedures. The results are presented in the form of grain size distibution curves on Figure A4- o65o A-1 Figure Soil Classification SYstem and KeYJackson Residence Port Townsend,.Washington Soil Classificatbn SYstem IIAJOR DtvtsloNs uscs GRAPHIC LETTER SY'HBOL SYHBOL TYPICAL DEscRF-nol.tssH GRAPHIC LETTER TYPICAL DESCRIPTIONSOTHER MATERIALS SYHBOL SYTiBOL Ngtes: 1. ftimyCor$nrt >5Dg-'GRA\lEL"SAllD"'SltT""CtAY''*' r*grd*vCom{fuprrra.>9%gd<5o1.-.Eyga,c0'.'.'pr'sardy..1,gy5b,..dc.t rz$ ard I rog "rni*y." "tatv" 'stty.r eb' Ad{ni,,et Ccffitrrefle, > 'S* ",* 3 1295 -';5nht -Cravdlyi's{$ry s.ndt'"'6[dtgv $q,' qtc' .3 sx - rri= hir*' 'gs tanA' rru Efrt' ei!'. of nd ned' J.pO ?gEp GogEE 3;R QEE HEE fisE GRAVELAhID GRAVELLYSOIL (Moretla$ 60* dmr* tractitn rctaH on trb.4 siet€) CLEAN GRA\EL (Lileor mfrr*) Glil l,'*+grad€d $a€[ grsrrelts{rd r{)Grre(s} trdle or no fines Podly gr#d gr€vlt grdrouGand ndtdtqs); ulns or'prhes Sift grnEt grat eUsadrr0t r$tu€ts) Cta:py gravd: gravdrsard/ctay mixfttG(s) 3r GP GRAVELWTTH RNES (ipfiedabb*nds! o{ firpa)'t GH GC gCNDAND SANDY SOIL (Uorethm sffi ca c€l€€ frac{ori Passcd lhrsush tio'4 EiM) CLEAN SAND (LEb6Efns) SW f!bi-!rd s€nt[ grav€ly sanq ft6tdtFtrnB Pmrtt Sad€d strrt gr&,e8t sstd; R3e or Do fnes $f$ saitq sandr$t mixturqs) S}eyiandstdteY mlturqc) -: .".'SP SAI.TDWTTH FINES {AptucL{ie aernr*of frlos) I's[' sc -E*5.EE!0E8a;NlrocizSzG g E*-9'f E =0El!Ee SILTANDCINY (Li+it frnit tea5 ftan soi SILTANDCIAY tl&uf Mg'Eattf8t8'l5q HL slhy ordayey fre hrooanlc clay t{ lorr tD tnefim ptasticityi gravelly day; sandy cbf dty da}1 ban ckY OrggtiE git, dgFrtb, sfty ctay of br piartioily /7 CL f3 OL I I HH fugsr'p s& micamr or dfurmts frP sard l$qrEE# cbry d f*gh Pxlbry f.t U:Y Orgpric dst oa trcdsn b hoh plgtlicty; otganic s$t CH olt HIGHLY ORGANIC SOIL PT PDat tlrrdrq sttP sd uih lt(ft orlqnic conEnt eapnat congee pariersm or For$and €tvlcd psrremenlAc orPCPAVEMENT Roct (Ss Roc* Cbc6iFHtioo)RKROCK tAfso4 t mb€r. smd d{EWDw00D csulndondebrE. gatbsggDBDEBRIS b c d e 1 2 3 1 She$ry TSe G'r& Sarnde O&er- Sec tad I aPPficatie 3OOlb tbf(irer. 30-hch EiEF luHl-b ttswrcr, s+hdl e3p PGt'cd Gber- Se teEd f aPdi=He Drilling and Sampling KeY ]-- SAMPLE NUMBER & I}.TERVAI Ssnde oePfil ln€nd SAMPLERTYPE Samp!. ld.r{frefD.r a{mb6 Roco\rery Wt htterEl Porlioi of sarnd€ Rebired totAtd*ve sAttdlr3ls 3.25-hcb On- 242'!8ft ll0- SP& $ffit 2'octdr O.D. 1-5o$dr 1-D-Spfis?trt Field and Lab Test Data UO(E PP = 1-o TV = {L5 PIO=1(B W=10 D=120 -2!O=m GS AL CA ' Descripilon |W Pe*etomefet. tcf TowaBe, tsf Photobntsatin D{!i!.tor.\rcC scrB'8ntng, ppm Mca$IID Coilefll.96 Drt Ddl6lu, pd tsabriai gna$ertan No. 2(F sie're. % Grain Slze - Sea *parate fgure lor dab Arbrbs'g E nfrs - Sos separaE f8ute tor daia offld G€#chni* Testing CflervfcdAlrdy:sh v ATD d#r&d- Gtutttd*#€tFlatton atrim d d.d&g {ATOI o{ onAppNifiab q,ar€r sdcdhatffis.dE b Fs*fabr\ ssasod [odb$s.lrclscaniEiuate Groundwater o E oa GROUNDWATERSOIL PRORLESAMPLE DATA 6.oE 1t,(,ce6o oIEaE'()to Ground Elsration (D: -174 Excarrat'pn ltbBtod Hand A{Se{oo\F oo.E..oq t!(! CI 6@F frb(bPsolr- ,{undail{ gr6d dtd cobtles $ here. fac. grarr{- lhlrp, tan to g'ay.ry nc! W-l WE4 .GS 1I ,I ctltEtL6 -94o-oEC u)6 HA-2 eaaac'o B Ts6t Ptt Cdnpl6bd dsfl3r05 Totrl D.!fi .f Tssl Plt 43i GROUNDITIATERSOILPROFILESA.MPLE DATA Grosnd Elevatixt tr): -'!82 Excavslbn ljethod:Hatd Auger6tE U'llECLc(t 6!E it)ootDl {'o F gclEt.D @'6o 6oF llll OL orgilic,6atdy traoe 1006 bfi'9 n, 5lr trrellcdfundsr€€. btsfil,darT-.iV gra\El.' iimundrrEbr not cncountared 'l'1.sL W=8 W=9cq Log of Test Pits N2 figure Jackson Residence Port Tornsend, \lrlashington e EeoA lD.9EJad -or ect)EE co 66 1I 2 To€* Pn ComPl€lEd To,tal Depth ofTes( @13&5 Pit= 3.5 ft- 6 Noies:1. Srraulr€pfricmlaclsst"b.sGdqlfeld'rfclPrt{Sttsstdre-sPryPqP*; ,.,..L-^z. not"6nro o tr" terd ot ftb report b neessary f6 a Prop€r ur*l€rsHxfE d sub3uface DorxtEls' 3- il; disA ct*rd"r s!"r6 -d k"f lit ,te dr #emltm of $ad.scs and 3vmbds' (,eore bc GROUNDWATERSOIL PROFILESAMPLE DATA Ground Ehadon($: :16O ' HandA-lgerF:xw*ion llefiod:6ll F,a .9Ee!o oDEo TA()a, = 6{!(f 6oF a}q F .oaE6at orgdt'c, H€dm&!8e, btotn b Ddd bsl'n''ldlp' 6fuirft galtail. sltY srtHD. Grors$r'aEr tot qtcDuft€red' €fyrrt. tracegradW=6 W=6 e a3o ot:E 16d>o-oEg €GU 4 HA4 2 -Iesl Ph Csnd€lEd G5fl3/O5Td It€Pft otTest Pil = 25 fl" GROUNDWATERSOL PROFILESATI'iPLE DATA GoEoot)o,3 eumOelevation6;; -16o -_.- Hard At€Gr LGe. dq$e. reffihbUstdsrp, Excanatirn tlkdtod: l'ooseb 0Ffinn *ttro, siRfSAXD, rtbce gtovPt oI€ tt)l:cc6g a)CLF -9(t E6(tt @ do @0l-- OL SM Grurndvator no{ on@unEred. silT.lW=5 W=9 GS A-3 Figure Log of Test PitsJackson Residence Port Townsend, Washingbn iE 5eoo o3tr,= o>o-oEEo-(a.6 .rf 2 T€d Pn Condded 05/13105Tel Depth of Test Pfr = 2.5 ff- NolEs: 1. St'atilephb contacls are bced on fdd herge&ns ard are approximate- 2 Rbfgae to the brt of tlis fepqt tc rsc€5sary tof a F; "fiod;gn*ns s( *rb6{:rfaoc cDrtdiofis' 3. Referto.sdl Cl66Utcation sFte|n fid 16}. fEr€loroiF$afon cf eraphics 3nd syr|bots' 3T 4e@ RESIDENCE.GPJORAIN 8[ZE RGURE831r.5/18105A-4FigureGrain Slze DistributionJackson ResidencePort Townsend, Washlngtonrj-l---l-I=irf-l-lJU.S. Sieve NumbersHydrometrfU.S. sleve oPentng ln lnchcr348Elo tll€ 2060 g0140c4321E't009080.cE)oB>r.tlIITI0d)o-60302010UGreln $lzc ln tlllllmctsrsSMSMSMUnlREd SollClerslflcatlonOllve brownmEdlumflne tofine toSANDrncdlumtinebrownReddishSoll DcrcriPtlonTenmedlumNaturalMoltture (%)1I6I3,03.52.51Depth(ft)1222SamplcNumberHA.4ExploratlonNumberHA.1l-ljA-2HA.3oaA*$llt or ClaYM6dlumSandCoarcoFlncGravelCQatseCobbleseore9T WILDCAT DYNAMIC CONE LOG Page 1 of I coDlpsrly namo company addrcss comPasy city, state' zip GcotcstSercic€C fu' ?41 MaineDrivc Be[inebaq WA 98225 PROJECTNTIMBEE.5379 DATESTARIED n^TF.C0MPLETED: 0113-2005 -178 None 35 1b6. 10 so- cm CONSISTENCY CI-AYSAND& SILTr5{) CONEGRAPH r000 OF 50 RESTSTANCE ?ER SOFT MEDITIMSTIET MMIUMSIIFT SOFT \IERYSOFT VERYSOET STIFF VERYSTIFT VERYSTtrT HARD HARD HARD EARD HARD 2 5 5 3 I I 11 l6 VERYLOOSE LOOSE I,OOSE VERYIOOSE \TERYLOOSE VERYLOOSE MEDII.}MDENSE MEDIT]MDENSE MEDII.JMDEI.ISE \,IERYDENSE VERYDENSE IIERYDENSE VERYDENSE VERYDENSE 89 u3 1?.8 t33 4A 4.,t1 40.0 573 106.6 1909 2y3.4 .281.8 293-4 386-0 2 4 4 3 1 1 9 13 24 43 76 73 ?6 100 3m 10ft 4m 13ft 1ft 2ft. 3ft 1m 4ft 5ft 6ft -2m 7fr 8ft 9ft 11ft 12ft wirDcATJ(ts tr WILDCAT DYFIAMIC COI{E LOG PROJECTNUMBEK DATESTARTED: Page I of 1 5319 DATE @MPI.ETED: 05-13-2005 . . 05-13-2005 SI.}RFACts ELET/ATION: WATERONCOMPLETION: ..Nogg coEPAnynam€ compauY address company ciE, statg zip }IOLE #: DCP-2 GeotcstScrvices' Inc' ?41 MsineDrivc BeUingham,WA 98225 CREW:DSIDJ PROJECT:Jackson Rosiilelce HAMMERWEIGHT: CONEAREA 35 lbs. 10 sq. c0ADDRESS:Fir andK Stneet LOCATION Port WA CONSISTENCY SILT0 GRASHOFCONERFSISTA}{CE PER I ffi BLOWS SOTT MEDIUMSTFF STIFF S:flF:F VERYSTIEF VERYSTIFF HARD EARD IIARD HARI) HARD HARD VERYLOOSE I.OOSE MEDIT]MDENSE MMIUMDE}ISE MEDruMDENSE MEDITJMDENSE.If.ERYDSNSE VERYDENSE VERYDENSE VERYDENSE \[ERYDENSE lBYDENSE 2 6 15 l1 19 2l 83 n2 533 40.0 66.6 755 186-s 222.0 190.9 20L7 289.5 386-0 2 5 12 9 15 t7 42 50 43 47 '15 100 3m 10ft 4m 13ft 1ft 2fr 3ft lm 4ft 5ft 6ft 2m 7fr. 8ft 9ft 1rft 12ft wlLDCAT.XLS a WILDCAT DYNAlVtrC CONE LOG Pagclofl- corryilynatne compur5r addrcss coupary ciry statg aP IIOLE#: DCP-3 CREW: Gcotest Sereic€s' Isc. ?41 MarineDrivo Bellinglram,'WA 98225 PROJECTNUMBEK 5319 DATE STARTED: - 05-13-29,-0-5 DATts C0MPLETED:--@905- SI]P,$A(SELEVArION:-16CI WATERONCCIMPLETION: None PROJECT:Jaclcgon Residence ADDRESS:Fir KStregt HAMMERWETGflT: CONEAREA: . 35lbs: 10 sq- cm I,oC.ATION:PortTownsea4 WA TESTED CT.AYSAJ.ID&SILTNGRA?BOF050RESISTANCEBI,OWS PER l0 cm MMIUM STIFF VERY STIFT IIERY.STIFT \IERY STFT EARD IIARD. I{ARD IIARD IIARD HARD r,ctosE MEDIUMDENSE MEDIUMDENSE MMII.]MDENSE YERYDENSE VERYDENSE VSRYDENSE TfERYDEI{SE \IERYDENSE VERYDENSE 8 25 2t 31.1 88.8 932 755 195.4 213.1 2n83 226.4 310.8 5'12.8 3m 10ft - 4m 13ft lft 2ft 3ft 1m 4ft. 5ft 6ft 2m 7S 8ft 9ft 11ft 12fr mr-DiATJc.s