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ANDERSON & ASSOCIATES CONSULTING ENG!NEERS, INC. <br />3902 VILLA SAN JOSE DRIVE,JACKSONVILLE. FLORIDA 32217 (904) 731.7978 Fax (904) 731·7771 <br />12" x 12" TOWER SECTION <br />STRUCTURAL CAPACITY <br />4. Consider Allowable Axial Loads for K=2.00, or Lc=2.OOL <br />K4 := 2.00 L := 10,15.. 45 64 <br />L'= K4 -L wd = 8.5 Ibs/ft wd4 <br />wd ·L <br />L ' -1866 <br />Fa4 <br />51000 <br />I. <br />8.cAL 12 <br />rx <br />Fa4 <br />2 <br />Ps4 <br />L := i[{Fa4L<12,Fa41.' <br />0.0075·Pa4 ·L·12L <br />L:= dx·2 <br />12) Fcw41. := Fcw Pa41- = if(Fa4[. <br />·4 Pas := if(K4> 1,Pa41, - Ps#L'Pa41, <br />< Fcw4. <br />L , Fa4 ·A3, Fcw4 ·,L L <br />PaAL := Pas4[. - wd41. -1 -0.85 <br />Height Effective Allowable Allowable Allowable Sway Allowable SeN AllowableHeightLong Axial Short Axial Adal Axial Less Sway Weight Axial(ft) (ft) Cksi)(ksi)(kips)(kips)(kips)(kips)(kips) <br />Lc4 Fa L L __£_ L LFcw4Pa4Ps4Pas4wd4LPaf4L <br />20.00 12.000 7.450 31.815 5.727 26.088 0.085 22.10330.00 9.838 7.450 31.815 8.590 23.225 0.128 19.63340.00 5.534 7.450 23.633 8.508 15.125 0.170 12.71250.00 3.542 7.450 15.125 6.806 8.319 0.212 6.89060.00 2.459 7.450 10.504 5.672 ..4.832 , ·.. 0.255 3.890' -70.66 - 1.807 « 7.450 7.717 4.862 2.855 0.297 2.174*-----.* I -Il--I.- I--I-- -I--I-80.00 1.383 7.450 5.908 .4.254 1.654 ;0.340 1.11790.00 1.093 7.450 4.668 3.781 0.887 0.383 0.429 <br />25 Allowable Loads: K=2.0 <br />111I11 <br />20 - - <br />P af 4 <br />15- \ - <br />L \ <br />to- 1 - <br />\X <br />5-1 - <br />ol lillI <br />10 15 20 25 30 35 40 45 <br />L <br />1 {eight (Fcct)