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4510 Thomas Lake Cir - Strong Wall Shear Panel ReplacingSeptember 9, 2010 Joseph Miller Youngfield Homes 18133 Cedar Avenue South Farmington, Minnesota 55024 952.469.4066 phone Re: Jane and Joe Miller Residence - 4510 Thomas Lake Circle, Eagan, Minnesota Strong -Wall Shear Panel Replacing a 4 -ft Braced Wall Panel Dear Mr. Miller: This letter addresses the use of a SW24x10 -RF or SW 18x9 -RF to replace a 4 -ft braced wall panel as described in Section R602.10 of the 2006 International Residential Code. It is my understanding that these panels will be used in the second story of this project with a site -built wood -framed wall with a post below. This application is covered in sections 4.1.3 and 4.2.2 of our ICC -ES evaluation report ESR -1267. Detailed information on the use and installation of our Strong -Wall panels to replace prescriptive braced wall panels is contained in our Strong -Wall Shearwalls Prescriptive Design Guide, T- SWPDG10. This includes pre - engineered foundation anchorage. However, the application described above is not listed in the wall selection tables on pages 22- 28. Simpson Strong -Tie has evaluated this application and anchorage. The wall selection and corresponding Anchor Classification may be determined using the First - Story -On- Wood -Floor Application table on page 23 under the Single -Story Application column. Both wall sizes result in an Anchor Classification of B. This classification into a concrete stemwall is described on page 65. The post below each end of each Strong -Wall panel must be a minimum 3 -ply 2x4. Please contact me with any questions, comments, or concerns. Refer to T- SWPDG10 for additional important information. Sincerely, Shane Vilasineekul Branch Engineering Manager Simpson Strong -Tie 6/5/6 7710/4 /93" G./I/cc c- ;- 7Z c y fz Cc: Paul McEntee, S.E., Simpson Strong -Tie Jeff Bloch, Simpson Strong -Tie Curt Johnson, Simpson Strong -Tie Terri Soderbeck, Country Joe Homes Encl.: T- SWPDGIO Excerpts Page 1 of 1 Simpson Strong -Tie Co., Inc. 2600 International Street Columbus, Ohio, 43228 Phone: 614.876.8060 Fax: 614.876.0636 www.stronatie.com SIMPSON Strong-Tie