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SUITE 425 <br />PORTLAND, OR 97232, USA <br /> <br /> GTE MO'BILl <br /> <br />'I'HE FOLLOWING DEE~IGN CALCULATIONS HAVE B~ <br /> SUPE <br /> <br />THE CASSION FOUNDATION'S ANCHOR BOLTS <br /> <br />1, THE BOLTS THEMSELVES FAIL IN YEtLD OR I <br />ORIGINAL CALCUATIONS. <br /> <br />2. THE ANCHOR ~OLTS PULL OUT OF THE CO]h <br />INFULUENCE' CON~'I'RAINTS. IN ORDER FOR <br />OTHERS MUST ALSO. THUS, THE COLLECTION <br />RF-.~IST THE OTM OF THE ANTENNA TOWER. <br />SHE. AR pLANE MUST DEVELOP BETEWEEN TH <br />BOLTS FORM, AND 'rilE REMAINDER OF THE <br /> <br />lEERING CORPORATION PHi 5D.3,23~-.6078 <br /> FAX 503-231..64~2 <br /> <br />lET - AURORA <br /> <br />!EH PERFORMED BY MYSELF OR UNDER MY DIRECT <br />[VISION. <br /> <br />HAVE ~NO FAILURE MODES. <br /> <br />~RACTURE. THIS HAS BEEN CHECKED, IN THE <br /> <br />CRETE DUE TO LACK OF 'CONE-OF- <br />)NE BOLT TO PULLOUT, NEARLY ALL OF THE <br />OF ANCHOR BOLTS WILL ACT AS A 'UNIT' TO <br /> ORDER FOR THE ANCHOR BOLTS TO FAIL, A <br /> CYLINDERICAL SECTION THAT THE UNIT OF <br /> SSION. THIS FAILURE MODE IS CHECKED IN <br /> <br />THE ATTACHED CALCULATION SHEET..TO FUf~'THER INCREASE THE RESISTANCE OF THE <br />BOLT ASSEMBLY FROM PULLOUT, A CONT1NU~)US EMBEDDED STEEL PLATE IS PROVIDED, <br />THIS PROVIDES ADDITIONAL RESISTANCE TO 1ANCHOR BOLT PULL-OUT. AND INSURES THAT <br />THE BOLTS ACT A~ A WHOLE UNIT. PLF_..ASE C,~LL ME IF YOU HAVE FURTHER QUESTIONS. <br />THANK~ FOR YOUR QUICK RESPONSE ON THiS iSSUE, <br /> <br />SINCERELY, <br /> <br />TIM TERICH, E,I,T <br /> <br />MIKE HAYFORD, P.E. <br /> <br /> <br />