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�s'l�D'ti C`ir% I�-G� <br /> V � <br /> , �"`"�'' . �•`�"`'`,c�5' <br /> Tibbits Engineering, P.A. � - z2 �� <br /> �� <br /> Structura( Engineers �--- - ----- <br /> 1110 Greeley Ave. Gtencoe, MN 55336 <br /> Phone: (320) 864-5642 FAX: (320) 864-5672 Toll Free: 888-248-0373 <br /> www.tibbitsengineering.com <br /> June 14, 2007 <br /> Judith Pierpont <br /> 1801 West Farm Road <br /> Long Lake, MN 55356 <br /> RE: Addition of Second Story to Residence Located at <br /> 1940 County Road 6 <br /> Orono, MN <br /> Dear Judith: <br /> As requested, I visited the residence identified above on June 11, 2007, and examined the <br /> building in order to determine if the existing 2x4 stud wall and foundation will support a <br /> new second story for the residence identified above. <br /> Our design follows the requirements of the Minnesota State Building Code and the <br /> International Residential Code, 2000 edition. This includes a floor live load of 40 psf, a <br /> floor dead load of 15 psf, a roof snow load of 35 psf, a roof dead load of 20 psf, a soil <br /> bearing pressure of 45 psf/ft of depth, and an assumed allowable soil bearing of 2000 psf. <br /> The existing stud wall consists of 2x4 construction grade studs at 16" o.c. The stud wall <br /> can support a new second floor with a maximum clear span of 24'-0" and a roof system <br /> with a maximum span of 24'-0". Any point loads from girders, headers, etc have not <br /> been analyzed and must be designed by others. <br /> The existing foundation wall consists of 12" un-grouted masonry with a height of 7'-2". <br /> The existing foundation can support the vertical and horizontal loads noted above <br /> provided a new steel angle is installed at the top of the foundation wall as shown on the <br /> enclosed details on pages 3 — 4 of 4 of this report. The exterior grade must also be <br /> changed so that the grade slopes away from the residence and is not within 12" of the top <br /> of the foundation. <br />