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Chopelas & Associates, Inc. <br />TNEngineering & Design Services <br />3611 168' St. NE, Suite 5 <br />Arlington, WA 98223 <br />(360) 653-4615; FAX: (360) 651-2085 <br />March 7, 2002 <br />Deaconess Children's Services <br />4708 Dogwood Avenue <br />Everett, WA 98203 <br />Subject: Entry Bridge for the office building at the above address <br />A structural steel bridge with a concrete deck has been designed to permanently rcplacc the :ailing <br />wooden entry bridge at the above office. It should provide decades worth of very low maintenance <br />service. Mounting details allow it to be supported by the sidewalk and building at each end. Analysis <br />indicated some simple reinforcement of the building is necessary to carry the bridge's design loads. <br />The attached analysis is done in compliance with the 1997 UBC. The following design loads were used <br />based on the site conditions or according to the minimum code requirements: <br />Design wind speed: 80 MPI4 <br />Wind exposure: B <br />Seismic Zone 3 <br />Deck load: 100 PSF (exit facilities) <br />All dimensions should be field verified and parts made to fit the existing structure. Ovcra'', dimensions <br />may vary up to three ;aches as long as none of the relationships between the structural details is altered. <br />The bridge can be fabricated off -site and crane installed. The steel ledgers should be fabricated first and <br />installed, and then the bridge assembly can be accurately positioned and the girders match drilled for a <br />perfect fit. <br />If you have any questions or if you are in need of further assistance please feel free to call. <br />C <br />WAS WO <br />�1 h *X1 <br />ch <br />r: <br />R. 27974 <br />Stt)NAL3� 1°Z <br />EXFiEFS 12-]4-Zoo <br />Peter Chopelas PE <br />