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.;�� <br /> ��E �� <br /> � � <br /> December 8, 2007 <br /> Attn: John Daly (StoneHouse, Inc.) <br /> Bill Bigley <br /> Alethea Sadowski (StoneHouse, Inc.) <br /> From: Bernie Stroh, P.E. <br /> Re: Structural Review of Proposed Residence Remodeling <br /> Orono, Minnesota <br /> Memo: <br /> As requested, I have completed my structural review of the living <br /> room 'tall wall' stud framing and the main floor I—joist framing <br /> for the new stone fireplace mantel. My observations and <br /> recommendations are summarized below. <br /> TALL WALL <br /> The exterior wall of the living room is a two—story high wall that <br /> is 19'-2" high and 18'-2" wide. The existing wall has large <br /> window openings that are framed with two intermediate mullions. <br /> The mullions are full—height double 2x6 studs with additional <br /> bearing studs for the headers. The window configuration will be <br /> changed for the proposed remodeling of the home. According to <br /> my calculations, the existing double 2x6 studs at the mullions <br /> bet�een the windows are not adequate for a 90 mph wind load <br /> as ��equired by the current Minnesota State Building Code. <br /> I recor�mend adding a 1-1/2"x5-1/2" full height LVL stud to <br /> each of the two interior window mullions The combination of the <br /> nPw LVL stud and tha ex;sting doubl� 2x6 studs (to remain) will <br /> be adequate for the 90 mph required design wind load. <br /> MAIN F�OOR JOIST FRAMING <br /> The� main floor of the house is framed with 14" I—joists (TJI <br /> Series 35) spaced at 16" on center. In the area of the fireplace, <br /> the floor joist span is approximately 20 ft. According to my <br /> calculations, the existing 14" I—joists can safely support the <br /> weight of the insert fireplace and the proposed stone mantel <br /> (1500 Ibs). For analysis purposes, I have assumed that the <br /> fireplace and mantel loads are supported on a minimum of two <br /> adjacent floor joists. The calculated deflection of the floor joists <br /> with the fireplace and mantel weight should be 3/8" or less. This <br /> is within normal acceptable limits for residential wood joist floor <br /> construction. <br /> Please forward a copy of this report to the City of Orono Building <br /> Inspections Office and contact me with any questions or <br /> comments or if I can be of any further service. <br /> End of Memo <br /> I hereby certify that this plan, specification or TR 0 H ��ZB s�b Memorial HiQhway <br /> Mendota�eights MN 55118 <br /> report was prepared by me or under my direct PAone (�s�) 454-9455 <br /> E N G I N E E R I N G F°x c�,� �54-5086 <br /> supervision and that I am a duly registered strohengineenOattbi.com <br /> engineer under the laws of the state of PROJECT: Bigley Residence <br /> Orono, MN <br /> Minnesota. <br /> ��� � 12/8/07 � � I <br /> Bernie Stroh, P.E. Date ATTN: TOM BOESER <br /> REG. N0. PE 14269 <br />