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ANDERSON & ASSOCIATES CONSULTING ENGINEERS, INC.ID] <br />3902 VILLA SAN JOSE DRIVE. JACKSONVILLE, FLORIDA 32217 (904) 731·7978 Fax (904) 731-T771 <br />12" x 12" TOWER SECTION <br />STRUCTURAL CAPACITY <br />2. Consider Allowable Axial Loads for K=1.25, or Lc=1.25L- <br />K.2 := 1.25 L:=10,15..45 Lc2 <br />L := K2 ·L wd = 8.5 lbs/ft wd2 <br />wd·L <br />L '= -1666 <br />Fa2 L' <br />51000 <br />/Lcl ·12 <br />L <br />Crx/ <br />FalL12 <br />Ps2L '. <br />=if(Fa2L<12,Fa2L' <br />0.0075·Pa2'L·12 <br />dx-2 <br />12) Fcw ;= Fcw Pa21, := ifFa2L<Fcw2'Fa21,'A3,Fcw2-6 <br /> ·4 Paslt := if(K2> 1, Pa2L - Ps2' Pa2 <br />PaQL := (Pas. - wd2) ·0.85 <br />Height Effective Allowable Allowable Allowable Sway Allowable Self Allowable <br />Height Long Axial Short Axial Axial Adal Less Sway Weight Axial <br />(ft) (ft) Cksi)(ksi)(kips)(kips)(kips)(kips)(kips) <br />L L£2L Fa2 Fcw2 Pa2L Ps2 Pas2 wd2L Paf2LL <br />10 12.50 12.000 7.450 31.815 5.727 26.088 0.085 22.103 <br />15 18.75 12.000 7.450 31.815 8.590 23.225 0.128 19.633-1- <br />20 25.00 12.000 7.450 31.815 11.453 20.362 0.170 17.163 <br />25 31.25 9.067 7.450 31.815 14.317 17.498 0.212 14.693 <br />30 37.50 6.296 7.450 26.889 14.520 12.369 0.255 10.297 <br />35 43.75 4.626 7.450 · ·· ·1·9.755 12.446 7.309 0.297 5 960 <br />40 50.00 3.542 7.450 15.125 10.890 4.235 0.340 3:311 <br />45 -- 56.25 2.798 7.450 11.951 9.680 2.271 -0.383 1.605 <br />25 Allowable Loads: K=1.25 <br />IillII <br />20 - -1 <br />15 - \ <br />- <br />patuL - <br />10 - - <br />5- - <br />0 1'Illl <br />10 15 20 25 30 35 40 45 <br />L <br />Height (Fed) <br />t