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BRAUN Braun Intertec Corporation <br />N.~. E RT E C 1 1001 Hampshire Avenue s <br />I V L R L Minneapolis, MN 55438 <br />November 17, 2011 Project BL-11-06693 <br />Annie Deckert <br />City of Elk River <br />13065 Orono Parkway NW <br />Elk River, MN 55330 <br />Re: Review of Building Common Wall <br />720 & 724 Main St. <br />Elk River, MN <br />Ms. Deckert: <br />Phone: 952.995.2000 <br />Fax: 952.995.2020 <br />Web: braunintartec.com <br />The purpose of this letter is to report the findings of a structural engineering review of the common wall <br />between 720 and 724 Main St. in preparation for demolition of the 720 Building. <br />Assignment <br />Braun Intertec has been retained to provide a structural engineering review of the existing wall that <br />separates the 724 and 720 Building located on Main St., in Elk River, MN. The purpose of this review is to <br />assess and provide general guidance in preparing the 720 Building for demolition and limit the amount of <br />negative impact to the 724 Building during the demolition, which is to remain in place. <br />Description <br />The site has three buildings located adjacent to one another. The buildings are all single story structures <br />with two of the buildings confirmed to have partial basement areas. The two buildings on the east end <br />of the site (720 Building is the center building) are scheduled to be razed and new parking lots added to <br />the site. The building on the west end (724 Building) will remain in place. <br />Observations and Comments <br />Braun Intertec completed a site visit on November 11, 2011 to review and determine the layout of the of <br />the common wall between the 720 and 724 Buildings and to provide our opinion of the general steps <br />required for the proposed demolition to limit the impact on the 724 Building. The following information <br />was obtained through the site visit: <br />The fronts of all of the buildings face south for reference in this report. <br />The roof framing of the 720 building consists of main wood girders that span the width (east- <br />west) direction and supporting roof and ceiling rafters that span in the north-south direction. <br />The roof girders are spaced at approximately 12-feet along the length of the building. The length <br />of the building is approximately 100-feet with an additional 10-feet that was an expansion to the <br />original structure. <br />Proi~iding engineering and environmental solutions since 7957 <br />