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January 20, 2011 2#* <br />UniRae <br />1411 Broadway Boulevard NE <br />Albuquerque, New Mexic0 87102-1545 <br />TEL: (505) 242-64 1 1 <br />FAX: (505) 242-6412 <br />Attn.: Engineefihg Department, <br />Re: Engineering Certification for UniRac's SolarMount Code-Complaint Installation Manual 227.3 <br />PZSE, Inc.-SWuctural Ehgineers has reviewed UniRac's "SolarMount Code-Complaint Installation Manual <br />227.3" published October 20 10 and specifically 4.Pact I. Procedure to Determine the Design Wind Load", and <br />"Paft II: Procedure to Select Rail Span and Rail Type", <br />The procedures are used to determine the calculation of the design wind force, load combinations, applied <br />loading and rail selection. All information, data ahd analysis contained within the Installation Manual arc based <br />on, and comply with the following: <br />1. 2009 Inteinationi11}uilding Code, by International Code Council, Inc.,2009 <br />2. 2010 California Building Code, by California Building Standards Commission, 2011 <br />. Aluminum Design Manual: Specifications iand Guidelines for Aluminum Structures, by The Aluminum <br />Associatioh, 2005 <br />This letter certifies that the structural calculations contained within UniRac's "SolarMount Code-Complaint <br />Installation Manual 227.3 are in compliance with the above Codes. <br />If you have any questions on the above, do.not hesitate to call. <br />Since ely, <br />Paul acher, SE - President <br />813/ Sumet Avanue, 50,10 120 , Fti, 00ks, CA 95628 . 91 6.961.3960 916.961 3965 1 o WWW.1; 5 .fot I <br />STRUCTURAL ENGINEERS