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. ' . . � � <br /> ' 'W�e are aware of very few instances of monopole faau�e. The most cornmon mode of <br /> f��ure wou{d be in the middle reg�on of the monopote, with the upper pottion of the <br /> monopole remaining connected and"bowing over"against the base of the pote. The feCt <br /> that the wind is nomnally greater on the uppet portion of the strudure oontributes to U1e <br /> likelihood of this type of failure. Thus, if a failure condition is reached, it shouid be <br /> reached in ihe upper middte region of the monopole first. <br /> . . .Needless to say, the engineering codes which govem tower and monopole designs are <br /> extremety conservative. Monopoles are designed for extreme wind conditions, and even <br /> under these extreme condtions, stringerrt fadors of safety are required. <br /> As lrice President of Engineering and a registered P.E. in 41 states, 1 oversee all <br /> engtineering and applica�ion of�ur towefs and monopoles. 1 am a graduate engineer from <br /> Notne Dame University and hav�e been with the company since 1984. I am assisted by : <br /> iwo other registered professional er�gineers. Mr. Myron Noble; who has been the awner ` <br /> af PiROD, I nc., since 1973 and Mr. Witliam Rettig who has been with PiROD. lnc., since <br /> 1990. Four other qualified engineers are also on our staff. <br /> A11 of PiROD welders are certified to the high standards of AWS D1.1 or are in the <br /> process of becoming certified. Mathematical and physical tests are perfom�ed routinely <br /> on stnscture sec�ons and designs as required. Our total design, engineer and build <br /> prooess has been quality audited by our customers indudng public u6lities, telephone <br /> oompanies and government agenaes. <br /> We tnast the abvve and the attached wi11 be hetpful to you. {f you should need arrything <br /> etse, please let us know at your convenience. <br /> Sincere <br /> , <br /> . . ��� . <br /> oh R. Erichsen, P.E. � <br /> Vi Presiderrt of Engmeering � <br /> Ext. 221 � * <br /> *���,�oew. . � <br /> �E���.�� <br /> ����.��``�.r <br /> �� <br /> � <br /> . . ' <br /> r.nan �nc. . _o,� . �,9 ���, <br /> P. . B X 128 PLYMOUTH INDIANA 46563 ) <br /> II �� <br /> O O , ( <br />