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�,. ., ' � . - . <br /> .� ,�:�iq <br /> , � <br /> � . � � .. . .�T. �. ' <br /> . . . . .'.: :, h',;'�' .4. <br /> . . - . � � . ' . . �`is <br /> vi: <br /> JaIIUST�/ 26, 1999 . ` ', ; c'. : <br /> i.: <br /> . . . . ' . ' ' . .'A� :'��..A.. <br /> Gary Hansen - <br /> Hansen Hometech Inc. .,.� ' ` � <br /> P.O. Box 1009 - '.` <br /> � Chanhassen, MN 5531T �`� a�(� `1 , <br /> 1• <br /> . 1 . . , _ 3. X.. <br /> f- x <br /> . � . . �...�f�r . <br /> Re: Carpenter Residence `� " " <br /> . , <br /> ;. <br /> _;�; - . <br /> Dear Gary: _.:.:�. - �°'`' <br /> At your request I have designed a ne first floor beam to clear span the existing basement.::, �: "��` ° <br /> „ <br /> in two spans; one span of 23' and o e span of 3'. It is my understanding that the beams is '. `;,� <br /> to support only the first floor ouse. You may choose from the following.sfeel `.. �:4` �' <br /> beams: W12x22, W10x33 r W8x40: e beam must be s7�liced over the intermediate � '��`' ��: <br /> � k' <br /> column and not conti�uaus a ans. <br /> � �t���'�. <br /> Please be aware that deflecdon governed the design. The usual design criteria for floors ��� ,�; :; <br /> limits the deflection due to live load to 1/360 of the span. I used 1/400 of the span. � - <br /> As we d.iscussed: While these beams are safe and even stiffer than usual, I cannot` , -. ' ..`:``,':� <br /> guarantee that the will not be some percepdble vibrations caused by people walking across .' � _ <br /> the floor. These vibrations may or may not be objecdonable. , <br /> .;,:.. <br /> ;..: <br /> The block wall supporting one end of the 3' beam should be grouted under the t�eam' . ;�:;. <br /> bearing down 24". The exisdng wall footing should be adequate. the intermediate column �: <br /> should be a standard 3" pipe column on a new 2'-3" x 2'-3" x 112" footing w/ 3#4 ba�r's �_: � �� <br /> each way. Locate the bars 3" from the'bottom of the footing. The other end of th� �eam '� _`' ��' ' ;_ <br /> should be supported by at least a 3" standard pipe column and the footing beneath should :` <br /> be 2'-0" x 2'-0" x 12" w/ 3�{4 bars each way. Again, locate the bars 3" from the bottom :. ° , <br /> of the footing. . <br /> Call if you have any questions. � � " <br /> . :R <br /> Sincerely yours, � <br /> �t-�-�-C' y��'`��`` ' - <br /> Ronn A. Winkler, P.E. <br /> Principal � _ '.. <br /> :":, <br /> . .: � ��;���: <br /> WINKLER STRUCTURAL ENGINEERS� INC. (6i2)�941-4825,.-,� <br /> 10300 Winter Place Eden Prairie Minnesota - �b5347.:� <br />