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1 �:'STRUCTU RES }� I I ( � � <br /> Jerry Palms P.E. /� //'�� <br /> SVuc[ural Engineer ���(.1 �,a�CG C� <br /> _� <br /> 416 Hennepin Avenue East <br /> Minneapolis MN 55414 <br /> 612/378 0393(Voice) <br /> 612/378 3736(Fax) <br /> . ��structuresQaoLcom <br /> SITE REPORT <br /> LUEFFE RESIDENCE <br /> 3249 CASCO CIRCLE <br /> ORONo MN <br /> SALA# <br /> =STRUCTURES#0701-11 <br /> February 14,2007 <br /> Robert Lue�e <br /> 2400 Interlachen Road#301 <br /> Spring Park MN 55384 <br /> Dear Robert: <br /> I visited the site with you on Tuesday,February 13,2007,at the above referenced address <br /> for site observations. The following is a suminary of the structural issues we discussed <br /> while on the site: <br /> 1.) Capacitv of existin�footines to sunport a two-storv structure: You showed me a <br /> set of the architectural plans for the original house. The plans and sections seem to <br /> indicate that a 20 inch wide wall footing was used to support the perimeter foundation <br /> walls of the house. If so,this is quite adequate for a two-story house.As welL there were <br /> no signs at all of any settlement,which might have been evidence of undersized footings <br /> and/or weak soils. <br /> 2.) Condition of basement foundation walls: The walls are 12 inch thick stack bond <br /> masonry construction.Each course of the wall consists of an eight inch block and a 4 inch <br /> block,alternating with the courses above and below.Because of this construction,there is <br /> no possibility of any vertical steel reinforcing in the wall. You have indicated that the <br /> wall was constructed with horizontal wire reinforcing at the courses. <br /> Despite the inherent limitations of an unreinforced stack bond wall, there is very little <br /> evidence of any wall movement in response to lateral earth and hydrostatic pressures.The <br /> architect's plans indicate an excellent method of soil preparation at the outside face of the <br /> walls,using granular soil against the wall, but then protected with a tamped clay layer to <br /> resist the movement of any ground water towazd the walls.You indicated that this system <br /> was applied at your suggestion. As a result, I observed only one continuous horizontal <br /> crack at a mid-height mortar line, about 1/8 inch or so in width, along the west wall. <br /> There was a similar crack along the north wall,but not much more than hairline width.In ' <br />