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Sabre Towers&Poles <br /> Job Number:54682 <br /> January 26,2012 <br /> Conclusions <br /> Based on the preceding results, the following conclusions have been made: <br /> 1. The tower with specified equipment is adequate to achieve a basic wind <br /> speed rating of 90 mph with no ice and 50 mph with 0.75" ice, in <br /> accordance with ANSI/TIA-222-G. <br /> 2. In order to accommodate the existing anchor bolt pattern, the base plate <br /> must be replaced as shown on page Al. Additional access ports will also <br /> be required at the light levels and future carrier level, as shown on page Al. <br /> 3. Contact Sabre for base plate replacement details and access port <br /> installation details. <br /> 4. The analysis is valid only for the equipment listed above. If the <br /> equipment is not as listed, an additional analysis should be performed. <br /> 5. The analysis assumes that the tower contains no structural defects, and <br /> that all components have been installed properly. <br /> Description of Monopole Computer Program <br /> A customized monopole computer program is utilized by Sabre <br /> Communications to perform the structural analysis and design of monopoles. <br /> The basic criteria for designing a monopole such as wind speed, effective <br /> areas of monopole sections, factored resistances, allowable rigidity and <br /> foundation requirements are based on ANSI TIA Standard 222-G. <br /> A monopole is treated as a cantilevered beam with a fixed base support. Wind, <br /> ice and weight are the major design loads considered in the static analysis. <br /> Effects due to eccentric moments, torques, slopes and deflections are included <br /> in the computer program. <br /> After all the necessary input data is entered, the program will compute the <br /> effective area of each monopole section, the wind loads at each elevation, and <br /> the factored resistance of each section. The total weight, wind shear, <br /> overturning moment and torque are calculated at each elevation, in order to <br /> determine loads in each section of the monopole. The factored loads are then <br /> compared with the factored resistances to determine the adequacy and/or <br /> required sizes. <br /> 2 <br />