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nav 1� oz 04: z9p p, 3 <br /> There is a very old crack in the nort�.�ast corner of the foundation. (See Picture#4) <br /> This crack was farmed because of mov�ment in th�e porch and gazage structure that was <br /> tarn down. 'This corner needs to be patched and repaired. <br /> The 8"block w�all only has about 42"of retained earth. The wall is adequate to re�ist this <br /> amount of horizontal eat-th pressures. The new addition does not change the amount of <br /> earth retained, so this �ondition wilt remain as it has for the past fifty y�ears. The added <br /> weight of the new addition also heips resist horizonta! earth pressures. <br /> In my opinion the 8"block walls are adequaie to suppurt the second floor additior, as <br /> praposed. <br /> Footin <br /> �he fu�ting is appraximately 4 ;2 inches tl:ick a.nc!20"wide. "I'his does not meet normal <br /> code requirements but our ca2cuiarions indicate this is sufficient:o suppart the 4aads <br /> involved with addition of the propesed secor:d floor. ��ee Calculatiuns} Our calculations <br /> indicate that •Nitn an effective w;d:h of 17"tlie soi! pressure is just 1�07 PSF. <br /> The soils are a ver�� stiff; derise clay. It�s so dense it is neazl} impossible to penetrate <br /> with a shovel. No�rnal excavation procedures are to machine excavate down t� a'oout 3" <br /> or 4"from the b�ottom of the footing and then hand dig the last the fast 3"or 4"hy iiand. <br /> ?h�s soil is so dense chat I thinl:this becam.e very difficult and so the foot:n�depth was <br /> minimized_ In my opinion, these soils are capable of supporting soi[pressares well in <br /> e�cess of 3000 PSF. The soils report by Braun Interec indicates soi]-bear;n�pressures of <br /> ?OOU to 60(30 PSF are acceptable. The ;i07 PSF is a relatively light soil pressure, and is <br /> well below u�hat the seil is capable of supporting. <br /> In my opinion the footings are adequate to suppert the groposed addition. <br /> New Addition Footin�s <br /> The excavation for the ne�v addition to the no:�h was done at the time of�my ir.spec:ion. <br /> The r+ottom of the excavati�n alon�the north w-all had soane spots that still had som:. <br /> inter mixed black soils. This is indicative of sume organic; mater:al in these spots. Ttie <br /> biack soi:s snouid be removed from the bottom of footing in these locations, prior to <br /> pouring of footings. The black soils are in just a fe��spots and are just a few incnes deep. <br /> (See also the Soils report by Brawi intertecj. <br /> If y�u have any questions regarding our findings or recommendation� pf.ease contact me <br /> at any iime. I hefeby csrtify that this plSn, SpeCfi�tiOri, <br /> or report was prepar�d �y me or Lnder my <br /> Yours tru y', direc!superv�sion a�a thoi 1 am a duly <br /> l Li:,'ertse� Pt�fessic3:a� E^r�neer uncer iRe <br /> �•�,��`D taws of 1�e S;�t� �f FuiinnEsc•:a. <br /> �--- <br /> VVayne C. Larson, PE Pnnt Name: '�rV vne C. Larson <br /> Signature: ��'r�'�— <br /> Date��12-02. License#78�1 <br />