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<br />e <br /> <br />. <br /> <br />. <br /> <br />Mr. Jaime Wambach <br />American Tower Corporation <br />11600 96th Avenue North <br />Maple Grove, MN 55369 <br /> <br />Re: Site Number Arden Heiqhts - Arden, MN. <br /> <br />Dear Mr. Wambach: <br /> <br />We have completed the structural analysis lor the existing tower, located at the <br />above relerenced site. The purpose 01 this analysis is to determine that the existing <br />tower design is in conlormance with the EINTIA-222-F standard for the proposed <br />antennae loads installation. ReIer to the Review and Recommendations section at <br />the end of this report for the analysis results. <br /> <br />Description of Structure: <br /> <br />The structure is a 700 It Rohn 80 guyed tower. <br /> <br />Refer to the supplied Rohn drawing and the mapping for a detailed description of the <br />structu re. <br /> <br />Method of analvsis: <br /> <br />The tower was analyzed using Semaan Engineering Solutions' software suite for <br />communication structures. The structural analysis is performed using the SAPS <br />linite element engine. The method is 3D, non-linear, which accounts lor the <br />second order geometric effects due to the displacements. It also treats guys as <br />exact cable elements and therefore is ideal for guyed towers. The analysis was <br />performed in conformance with EIAfTIA-222-F for 80 mph with 1/2" radial ice. <br />Wind is applied to the structure, accessories and antennas. <br /> <br />. Page 2 <br />