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HomeMy WebLinkAboutPermit Field Test & Inspection Report 2007-8-8 (2) K & A Englneenn!!, Ine. Select granular fill, consisting 0.510 Z.O-leet of %-inch H well graded crushed aggregate, was piaced on the subgfade illlilto m 12.inches or less andcompacled. We made random tests of the in.praca illy densrty ot this fm and hlNa delsffl1ined that li1Il average dry density exceOOs ~5% of maximum as determined ny ASTM 0096. A copy of the h-eld last msuits is attached to l!lis report. SUMMARY AND RECOfIlMENlJATlllNS Gooel3l Suitability TIle foundation pad, as constructed, is suitable to support the proposed new single.f3ll1lly residence supported by a corwerlliorHll casHn-piace concrele SlJread footing foundallon. We recommend acceplllnce clIne IO~Rdalilln pad, as c!ll1str1lcled, by lke tuta! building uIlicial. Rlurnlalioo Suwor! TIle IO!Jllllatinn pad. as preparoo. is $tIllable to SlIP1lOrt a convellUollal cast-In-place concrete spread footing system. The recommend allowable design allowable bearing PIllSSUl'O is 2,5i}()-pounds per square foot Footings c011stucted adjacent to ttll! SOlie 01 cCllSlructed (gmm.1ar) filllllinches should be construCteO so t!Jat the fooling edge closest to the top of 1I1e fill embankment Is no cklser than 413 of the blmch helght Expansive Soils The decomposed or highly weathered sandstone has a low f)01ential for volume change with changesln waler coment. Nn further a!ldltional conSlructiOn is requlretl te address eXllaosive soils. . llrainage We recommend tllat a perimeter fOOlillg drain be Insla!!ell around ll1e all sldllS Of 1I1e foundalion adjatent to cuts into the hi!l.'iide. Thl! toating drain consists of a 3-inclt minimum dlama1ef pertprnled drain pIpe povere<l with at ieas! 12-lnclres of drain rock !halls enveloped in a ssparafion gaotextile. Mdl!ilJnally, we recommeoo co.~strucU(ll1 of a low-po!i1l crawlsllaGe drain. The crawlsllace drain inlet soould be lOcated al tile low point of the crawlspace at base of tlre granular fill. with the granular I~! sloped away from me drain inlello avoid so~ or gravels falling into tn. drain. A grate or lilWf should be installed O'o'llf Ihe Inlet to avoid clngging of !he drain. Water tollected tWin !he fOOling dr1lins and li1Il row pclrll cmwlspace dmi11 should be routed to a Sllitalile storm rll<l!O dispusal poin!, do.....nhm of lhe loundation, using a saud dl1linpipo. SPECIFICATIONS Fcundalloo IJralD Petforallid drainpipe should cor.sis\ rigid ADS 3000 Triple WaR, scl1edule 40 PIle, or an equiValllfll rigid pipe. The perforntians should be placed dGvm. The foundatlon drain should NOT Oe corJlCcted to the roof drain Imle1m the GOl1~O~ is made aownMI Of lt1e 10tJndi.illon utilizing a bacldlow plBVsnllor. dllY1ce tMl pm!1itlits roof drainage from backing UIllnlO the foundlliioo dmin system. Drain Rlltk Drain rocK shOuld conSIst of clean, durable, opl!n-gralJed round or crJsh!!d sma. The rock should be piaced !)Ver and III tile side of the perforated pipe EO Ihat the pipe has a minimum 01 12-irn:Iles of cOVltr. The drain rOCk Shalf'" be co--roroO w111; ~_, ~,;0l1 gao',IDctiie Project 135.07 275 Mountaingate Dr., Spl1ngfield, Orogen Cr,snt Ca13lys1 Custom Homes Paga 2 of 3 August 8. 2007 . II & A Elllllneerlny, IBt. Sepallllien Geoltxtiie Sl;fY".ration geoloxlite should Ill! placed on the grade (at fooling 10veO prior to pia cement of the perforated pipe so lha! attar L~e pipe is laid and drain rock placi!, the geotexlile ca.'! cornplerely wrnp around the drain mck. Separation geotextHe Shall consist of a PO!Yllropylene non-woven needle-pUIIChI'AJ fabric tl1a1 is stabiiized against deYlOdalioo trom ultrllviolet light axposure (sunlight). lhe fabiic sMuld ha~ll a minimum AOS 0170 (US sttJ. sieve size). . l!MlTATlllNS OF TIllS REPORT Tl~ report has been prepared tor the exclusil/ll USIl or Galaiyst Custom Homes end !1S design consultants or Sllbc;ontrnctors for L'la subject pmposed structure. This geolOOlmical invesligalion, analysis. and fficofllll'.elJdalions m911t the standards of care of r.ampetent gemeC!lnical engineers pmilidilljj similar ~es at 1M time thesa Se11fices were providall. We do not warrnnl or guarantee lhese recommemJ.,"i1ons, site surface, or subsl1rfac~ comlQions. Toe scope of our services does not inolude construction safety precautions, techniQUes, sequences. or procedures, except as specifICally reco01rlWlded in this report Our selVices shou>'U net be intarpreted as ao 61l'1ironmWal assessme!1t of sire condiOOnli. Thank you tor lhe opporlimily 10 be at sarvice. Please cali lIS if yoo have queStions or need further assi~ltance. Sir.cerely, .........,<-.,,,.:<<,..'...;-, '.-..."'...,.................-<<<<,0;.; Prc4aCl: 135.07 275 Moul1!ainllilte Dr., Springfield, O~on Clillnt Catalyst Custom Homes Page 3 013 llugust 8, 2007 I 0el1~ ll! Suit am! SIlI1-Aggrll\lales 1!l-!'I1lce AS'fM 1J2922 aml1J3017 Projecl: 135.07 Silll Addms: 725 Moon~are Dr. I'ormn Mo: ~DI\P20{)7-00122 Dalll: 17/2512007 Densily TeslTyp.': OT-4 !ljlera'.or.!SS Malarial T'II'll~3!4.{rWt. minus dens. graded crushed aggregatll I MaJlmem l)f\'!lellSliV, !reilm.o I Siaild\lrdf2alllln and Irolerellw i:'.!m.~A !lensil<! l II> Moidllre, I (Stanllan111a11lallg~1J1s.:.D.:L._._. __.___~.77 (3.0:) 0.96 , M.itl Ill~ , I lJemlty, llensRyJ Wale' CompWilln, I , Tert No. pel ll&~ Ccnlant, % % Rlllllllrb '! 1 133.9 129.9 ! 3.1 101.5% 2 134.5 131.0 , 2.7 102,3% i 3 138.0 133.3 , 3.5 11)4.2% 4 ._1.:lO~.L..t..~~.~L'I"'- 5.5 96.6% I I I I I I I ! I AVlll<lla: Sttl.Dw.: I I 101.1% 3.21% , Olrecl Transrnissill!l {01j (spetitf dIlpth. ill.) or Air Gall Ba~attar (AGe) (IPetffly(T)oor:hab!e Of (U)lltom:natlla rr.otli3 Tast perlormed IL<;inq Sp..~mall ~J"CI.arCllrp mooel C.300, SN 21113 C~ent Catalyst Custrlm Homes ?1Ojt!ct: 135.07 l( 1\ A E"llilmcring, In.. I I i i I SiiY'2U07 {p~.'1 Jt{vm.atWn ff!!~!R.1b Build On E~.~.~ July 21,2006 .REVlSED FEBRUARY 16, 2007" Mr. Mark VUkailovlch Suntrust Land Company LLC 750 N:>I'l York Olive, SuitE 204 Elend, Oregon 97701 Re: Earthv.-ork Summary Letler lor individual 61.1ildir.g Lots Mountalngate Subdivision - Phase 4 Lots 1 through 129 Springfield, Onigcn 97478 PSi Report No. 722-65013.j03 Dear Mr. Vukanovicl1: ?Slts pleased to submit our earthwork summary letter and geotechnical requirements fm Individual lJuRding lots for the Mounlllingate Subdivision Phase 4 - Lots 1 through 1.29 in Springfield, Oregon. PSI has been providing ObseMltiOll$ during construction of the building pads from February 9. :1006 to present. The earthwork was pe,l,,,,,,,,,j by Oakritige Sand and Grave! under the dimcNon of the general contractor Eugene Sand and G>avel. Onsllrvations during our site visits were OOCUf'!'IGmad In our daily freld mpOItS which WllrE! typad and contained a aile plan showing the areas the contractor was worl<.mg on tllosa cays. Pleage reremnce those reports 722-65013-j through 722- 65013- 102, Ctlpies of tllllse mpolis \\fflre also provided to Eugene Sand and Grovel. Oaktidge Sand and Gravs;, CJly of Spring1leld. and The Faweau Group. Baaed on our o!Jwl'Vations dIJllng !he time frame manlionerl abolffl, the earthWQl1< was performed in (laMlaI a........ Jones with the pro1ecl ';""""..1 ..,iail report prepared by Soire ane! ASS<Ociates, Inc. dzted April 5, 2004, City of $,.,,:..,,::.;Id requiramenl$. and d,.,,.,I;....,,Cle pmvisions of the current International Building Code. The secondary purpose of this lettEr 15 to ll'Iltline geotechnical 6. 'W~ ,~, ;, 'J inves!igatkms that should be cornpletad for individual 1Ol$ 1 through 129 prior to r$Sidenlial c.onslruclion. To be cOflSi5teol Wi1h criteria estabUshed dllling.conmrut:lion for. Phases 1. 2, and 3 by Soire Assoolatlls, Inc. end KA Englneering In lellers datel.i RmnJSry 10, ,WOO <!flU Mm"Ch 28, 2006. ,"""""",;;vely, we aro recommending level I and Level II g"""",.:",iC!l1 IllVes1!gaoons 00 ..",r""...ed on lots 1lhrougl11291i1s follows: levtl! 1 Ga~lliCllllnwlrtigatian To 00 conslstl!n! willi the previously submtt!lld I'el'Wl'ts. we recommend .. level ; geotechnical inwsligstiOO be perfurmed for the residential bullding lots wham the :subsurface COl'ldi1iOmi are known ro CCIlsiSt of competent son or rock' and have been nbsel'\led by PSI during grading operations pel'furmsd by the esrtn\l,lOrll: <:ontractor. lots in lha Mounlaingatl< Phase 4 are-e !hat fall inln this category ara 7 through 22, 29 through 34. 40 through 51, I!md 74 through 101. ?iOit~l~!)~ 1TId:.n;.I>~. illC 1I1(Jri:)'A Sha!Gy S1te~f'" St>rl~i~_OA ~1.f77 ~ ~&un4O-ge~$I" ~ S:;l:7-<<8.J~6J Earthwork Summary Lattar for Individual lots Mourt.ain Gala Subdivision - Phase 4 Lots ., through 129 Springfield, Oregon 722.65013 Page 2 1. Verify IMl sits work does not arlvarse!y Impact edjacent lois, t.'llt:otie$, slid strael improvements. 2. An examinallon of all foundation excawlions during construction to verify design criteria assumptions and to provide rncommandillions, if necessary. 3, Now any special. uooJljlOOted, or la1enl condltlol',s that would require a Ia'llllll invesligatlon. "Parograph removed regarding ...""f,...llerl lots. The SurfaCIl $(Ills 11'1111 be addressed during Itle Level 1 Geotechnical1fM1Stigations." As mentioned in our previOusly subm;tted reports. Lots 97 through 99 have been ClIpped wi1h maleMl that is potenttally eJq:)!Insive !:lased on laboratory rests. This material sl1O'.Jld be removed pOOr to residenlial constructiOn. level :1 GeotGclmicallffll'll5tiglltion ',ve suggest a Levsl11 ll'lvootiglitlon Ila oompleled on all other remaining iots in Phase 4 ",tiers no grading operations \'lave yet been .."";,,,,;,;;,l! and the lots l'l1'9 currently in their natural slilta, Some of these {on; may be stesp, lh& subsurface COl'lrlillons unKnown, and 5trUcllll'allills alldl1lf retaining wans may be needed. We recommend lots 1'through 6, 24 through 28, 35 through 39. 52 through 13, and 102 through 129 be induded within the le~l Ii category. In gooera!. the lots illlavel1 may require ~,^;..",,:Jtl$artl1work or grading operations to cons1roct the singie family rasldences. For lots within lha Le\l$l II category, we reoornmel'lll a Si~fic geotechnical in\ll!lsligallon be compl&ted pMf to home site development. Within thl;lSa areas, particular attentitlll should be gi\IGn to: unstable grou."d, soWWet soil conditions, a,q;allsi~e soils, drainage, cu\S.'liIIs, and retaining walis. The following items are suggested asrninimum reqllirem<mts for 1M geoteCl1nlcal ilwestlgaticn l'epcrts. Earthwork Summary Letter for ~ndlvidual L.ots Mountain Gete Subdivision - Phase 4 L.ots 1 through 129 springfield. Oregon 722-65013 Page 3 ,. SUbsunaca explorations using either exploratory test j'Ji'.s andlor soil borings te determine foundation condHions. 2. Lilool<ltoly analysis of the soils to include at least moisture content and dry deMity, gradation, ancl AlterbefQ L.\mits tests. Testing may aiso include Expansion Index if the soil Is potentially expansive based on visual analysis, 3. A writt8li report prepareCi by a qualified gentechnical englnssr that summarlzes th8 site conditions, presems the illboratory test results, and addresses the recomnwndaoons for cuWfins. foundations, drainage. retaining weils. and other Items that may be necessary to tile development of the proposed residence. Similar to Level I lots, we recommand thai a geotechnical engineer or represenlalivo observe these lots dllling excavation to verify that the above lillted l:Omiitiooo ha.1Ie been satisfied !lnd the subgrade con<iitions are suitable for conllll'Uctitll'. As a minimum the geotecnniaallll1gmeer should 'provide: 1. Verify that site worn does not Ii!llvelSSly Impact ll.lliacent lots, utifltles, and street improvements. 2. A..~ ellamination Ilf au roundation excavations during con$ltU~ion to verify design criteria assumlltitJns and to provide reccmmandations, if necessary. 3. Note any spacial, unexpected, or latent conditions that woUld require a level Ii inllasllgation. It is reoommanded that PSI be mtained 10 examine and identify soli exposures created dwirig projeet exCS\'ations to verify that soil conditions are as anl<<;ip$ted. We further !'ew",...""J 1hat strut:!ural fills, if any, be continuouslY observed and tested by our reprasentslive to evaluate the thoroughness and uniformity of compaction. Samples of TIll materlals shouk! be submitted to our lahoralOf)' for evaluation prior to pia!:ament of fllls on site. . . This report is for the exclusive use 01 the addressee and their represantatlve to design Ine ....~..""'ed 1iIl'IIc:ture dasClibsd herein and tt; prepare ccnslruction documents. The data, analyses, anti mcommendatiolls may net be ap",_;"le for oth!ll' slructlJras or purpos~. We reccmmentl tr><at parties w..,~,..p1atll1g other structures or purposes contact us. In t,'le absence of. our written approl/lli, W'8 make no represernatlon and assume no responsibiUty to other parties regarding this report. The . ~......""uendations contained in t!'lls report ara b36ed an the available subsurface infomwtloo ol:>tainsd by PSI, and desigr, detailS tumished for the proposed project If \here are lIny re~1sions to the plens for this project. Of if deviations frQlT> the subsurface condiliol'!s l1<lte<! ill this report are encOUl1tarell during construction. PSI should be n~if.oo Irnmed!slely Ie determine if changes in t~ foundation recommendations are required. If !'51 is oot tetelned to perfonn these functions, PSI wili not be responsible for the Impact of those conditions on the project Earthwork Summary Letter for Individual Lots Mountain Gate SubdiWJloIl- Phase 4 Lols 1 through 129 . $prtngll<eld. Oregon 7;>.2-65013 Page 4 Services pl!rfcrrned hy the gooteclmlt:al engineer for illis project helle been oonducted with !hat lavel of care and sklll ordinarily exartised by members of the profession currently practicing in this area. No warranly, e"Pressed or impaed. is made. R~.......,(,iJlly SubmSlled, re, ";~ional Service Mdulifries. 1m::. ~v~ Raymond V. Allperfi Project Manager Charles R. Lane, P.!:. Sfi!1ior GeoI.eclmlG<i1 Engineer RVA: Ml c: Eugene Sand and Gravel Oakridge Sand sno Grllllel The FaVfeau GI:oup City of Springfield Afulchment Table of Level 1 am:! Leval 2 Lots lft~ lriformatlon ,,!!.:iiiJl1tB .1b Build On tb~ux,1fng GO c....~~. ~ Mountaingata Subdivision Phase IV Table of Level'! and 2 Lots FE~T~ "t"'r LE'll!rz ..-.......l eva1 . m_____.'_.'..~~_ ._~...._........_"(... ......,r-.. ......2 ~ I :2 I oJ j 3 I v I 4 I oJ I 5 ~ I I II '/ ~ I 7 ~ {\ ~ I 9 , , I 10 "'i 11 .J 12 v 13 oJ . 14 ,) 1_.... I I 15 ..J j 1ll '/ I 17 v 18 "'i , 19 .J I 20 .. i 21 "'i Zi. " 23 ~ i 24 .J , 25 v I 26 .J I 27 ~ I 2ll "'i I 29 ..J I 30 v 31 "'i 32 v 33 '.J 34 -i 35 .. 36 v ;)7 '/ 3B .---- oJ 39 v 40 .. 41 " 42 .J 43 ..j 44 oJ 4S .J 46 ,) Moutainga'.e SutxlMslon Phase !V T "b!e of level 1 and Level 2 i.Dlll Pm~n;&! Sim";:;e ~trle$. 1Te..1040-A Sh~~ semel'" Sotf~. OR fTtn7'" PM"'S54}I1..re..~" ~'SA.1~n63 Page' ffl~ll~'B~:/f: n~~._,;.:1fta9 a ~--4ftJ~ . ~ Mountaingate Subdivision Phase IV Table of Level 1 and 2 Lots rUifl!.C.~CC..'."C'.""T"~'C .l..lt~1:l=c.c.r .....C.(EliaL2 , ...,_~,.~,_~~._..".,...ll._~~ ."'~... ......................~..._,... . 47 I j 48 " ( I 49 ..J 50 ~ I 51 'Ii I 52 v I 53 'Ii 54 ..J .1 55 ~ 1 56 . I 51 v I 55 'Ii I 59 ~ 60 'Ii f 61 I " 62 v I 63 ..J I i 54 .,J i i 65 ~ I 66 v I 67 .J I '1 68 <i 1 69 v I I ia ..J ! I 71 " j ! 12 'Ii , , 73 v 1 I 74 "I' i , , , , 75 .,; , 76 .,J I 71 " I 78 ..) I 79 <I 1 SO <I j 81 ,; I 112 " 1 83 ..J - i 84 <I .1 85 ,) I 136 -{ I 81 'Ii sa I -J Ill! oJ 00 ! 'Ii 91 -I 92 " MOl.ltaingall> SIJ!ldNiaion Phase IV table of w..,,11 and l.....,j 2 l,.QlS P_~~ ~f'JSccmdH~rms.:nc." {(HD--A e:!wi~ m~. 3p~M. OR 97-4:77. ~~S'l17i1e-sa--;9...~$lS1J1iB.1~S3 Pagel