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POE Engineering, Inc. <br />CIVIL 8 STRUCTURAL ENGINEERINGICONSULTING <br />y + / 1314 BTH STREET N.E., SUITE 201 <br />AUBURN, WASHINGTON 98002 <br />(253) 833-4052 • FAX (253) B33-4053 <br />July 1], 2011 <br />Aire/Pro Inc. <br />291 Meridian Avenue East <br />Edgewood, WA 98371 <br />Attn: Mr. Scott Raeder <br />Re: GameStop HVAC Replacement <br />Everett Mall Space 190 — Store #4482 <br />Dear Scott, <br />II %JjU�L 11 2011 �,_%cti <br />C`tl OF EVERETT � `�1$ <br />Permit Services <br />This letter is written to address the replacement 1-IVAC unit to be placed on the roof of <br />the Everett Mall for the GameStop tenant improvement. The existing unit weighs <br />approximately 400# and the new unit 525#. 'fhe new unit will be placed upon the <br />existing curbing and this analysis was conducted to review the support framing <br />immediately under the unit spanning between the roof joists only. <br />'file un.it length roughiy matches the existing steel roof joist spacing and support angles <br />are provided spanning between the roof joists under the sides of the unit curb. Angles <br />3x3x%4 were found to be acceptable to support the sides of the unit curbing, and the ends <br />of the curb are placed directly over the existing joists. The new framing shall support the <br />existing decking edge and, together with the existing roof joists, shall provide solid <br />bearing under all sides of the unit/curb (typical). <br />The unit shall be fastened to the curbing, and curbing fastened to the roof per the <br />manufacturers recommendations for 85 mpli Exp B wind loading and Seismic Site Class <br />D (Sds=0.830) per the 2009 International Building Code. As a minimum, the unit <br />curbing shall be attached with #10 screws n 12" o/c on all sides of the unit. <br />Please call with any comments or questions. <br />Sincerely, <br />POE Engineering, Inc. <br />Alan F. Poe, P.E. <br />'t / t t, ( It <br />Attachment <br />