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, _ , .� L. o�rs � i , � a ; �3 <br /> Crest Eng1. n.�er3_ ng Tncorpora ed <br /> P.O. Box976 D1 � (� r� Q � (� � <br /> 800 Pearle Jensen Vay 1 �� u L5 <br /> LaConnet, 4'� 98257 I D� <br /> (206)966-J.006 Fax (206) 466-13�0 N�� 3 � �;i�� �c <br /> ^ <br /> NovembeY 21 1992 �` <br /> , GI i �' ;� EVEFiLTi' g <br /> f31dg. P�'rniit Gr,�in�nr i <br /> Bill Lan4us �'� �) f�� ( � � <br /> �. <br /> Czonin Homes� Inc. L6r 1� �7 1 5 �� � �, �` � <br /> 713 SE Bvezett Nall Ny., ste. C � � 3 '� �'� <br /> Svezett, WA - 98208 <br /> RS: GSOTECHNICAL INVfsSTIGATION OE LOTS 17.� 12, AND 13, riT. VIEW �7 <br /> SUBDIVISION, EVERETT� VA. � <br /> This lettez is written puzsuant to you= request for a site investiqation of � <br /> the three subiect lots _egazding the hearing capacity of the soils. i <br /> Oa the date of this letter, I performed penetzometer tests at 1-foot (depth) �: <br /> intervals to a total depth of cight feet in fouc separate test hcles as shovn <br /> cn the accompanying plat map. The test holes vere dug by a standazd size _ <br /> constzuction backhae. <br /> The azea in question is appazently a fi.11 azea. The fill has been in place for <br />� zeportedly approximately thirty yeats (per Bert Czor,in 11/421 . All fouz holes <br /> demonstzated appzoximately the same soil pzoEile, which vould indicate that <br /> the fil� is uniEorm and homogeneaus thcou;hout the acea of the three lats in <br /> question. The soil profile showed a one to two foot la��ez of �ark brovn ; <br /> topsozl (sandy loaml, and below that, a gxey loamy san@, with �obbles and <br /> pebbles. Due to the lazgely granular nature of the soi�, I Wou;:d considet iL''s <br /> composition veLy good foc supportinq typicai hottse loads. <br /> The resuits of the penetcometer susvey aze as follows: <br />� �: - 6' : Typical alloWable bearing pressure of approximai:ely 2,000 - 2,500 <br /> pounds pez sqaaze foot (psf) . <br /> 6' - e' : Typical ailovable bearing pzessure of approximateiy 1,000 - 1,500 <br /> psf. <br /> Continuous footinqs for standard two stozy constcuctSon should not exezt lonq <br /> tezm loads ot greater than J.,500 psf on the soils immediateJ.y beneath the <br /> Eootings, as long as the footin9s ace at least 16-inches vide at theis base. <br /> It is my understanding that Cronin Nomes, Inc. uses 16" wide footings as' <br /> standarL practice. Due to the distzibution of the applied Joad over a lazqe <br /> area with increasinq soil depth, the pressuze on the soil six feet or qreatec <br /> belox the fo�tings will be far less than 1,000 psE. <br /> Regarding anticipated settlement, the uppez six feet of soil should not seYtle <br /> any apE�reciab�e amount, it appeats to have been pre�iously pzopezly compacted. <br /> The lowez soil horizons may expezience a vezy small zmount of settlement due <br /> to the incceased load, ho�,evez it is not anticipated to be detrimental because <br /> of the eeJ.atively small load inccease, uniformity of the matertal <br /> 1 <br />