8711 10TH DR SE 2016-01-01 MF Import

� L �-�5 � � ,��a ; �3 _ Crast Engineering Trxcorporated P.O. Box 976 D � ^ � � � � 800 Peaxle .Tensen iiay `U D � LaConnez, WA 98257 (206)466-1006 Fax (206) 966-1310 � NOU '�i � 1,9�G November 27, 1992.. .............. � ................................ } ei1 ,• ;�r �vEneTr Bldg. Parrnit Counter ` Si 11 Langns LcsT (� �1 I ( � Czonit.t Homes, inc. ��.�3, Q-� � ra �- t 713 SE ,Bverett .Nall i�y., ste. C `�S '> l � L� �' �L i &verett,`WA - 98208 ��Ig @514�� '' Rfi: GBOTECNHICAL I � NVfiS�'IGATION OF LOTS 11, 12, A�7D 13, 1ST. VIEW #T k SUBDIVISION� SVERETT� WA. � � This lettez is wzitten pursuant to your request for a site investiqation o:E � the three subiect lots regazding the bearing capacity of the soils. i On the date of this letter, 2 pezformed penetzometer tests at 1-foot (depth) intervals to a total depth of eighC feet in £our separate test holes as shown `- on the accompanying plat map. The test holes were dug by a standazd size ` constzuction backhoe, - The area in question is apparen:ly a fi.11 area. The fill has been in place for repertedly appxoximately thirty yeacs (per Bert Czonin 11/92; . Ail fouz holes demonstzated appxoximately the same soil pLofile, Which xould indicate that th�, fill is unifor�c and homogeneous throughout the acea of the thzee lots in qu::stion. The soil profile showed a one to two foot layer of dark brovn tcpsral (sandy loam), and belov that, a qcey loamy sand, with cobbles and pebbles. Due to the largely qzanular natnze of the soil, I would consider it's � compvsition very good Eor supportinq typical house loads. The xesults o� the penetzometer suzvey are as follows: 0 - 6' : Typical alioxable beaaing pressure of approximately 2,b00 - 2,500 poands par sguaze foot ipsf) . 6' - 8' : Typicai alloWable bearing pzessure of approximately 1,000 - 1,500 psf. Continqous Eootinqs for standard ttro s�ozy constzuction should not exezt long tezm loads of qzeater than 1,500 psf on the soils immediately beneath the footings, as lonq as the footi�os ace at least 16-inches Wide at their base. It is my understanding that �. ;c;,in Homes, inc. uses 16" c+ide footings as' standazd practice. Due to tha distribution o£ the applied load over a lazqe area with increasinq soil depth, the pressuze cn the soil six feet or qreatet belorr the footings xill be faz less than 1,000 psf. Regarding anticipated settlement, the uppez six feet of soil should not settle any appzeciable amount, it appeats to have been previously ptopezly compacted. The lokez soil horizons may expezience a v�ry small amount of settlement due to the inczeased load, hotrever it is not anticipated to be detrimental becaus�� of the tel.atively smail load increase, uniformity of the material 1