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Thornton Tomasetti Subiect: Perimeter Beam Flexural Caoacitv 100181--IJOSE+OARD <br />Proiect: LA888 N Main Sheet No. <br />Bv: JP 34 of 234 <br />Date: 6 Auaust 2018 <br />d := (h To tensile centroid-center of beambeam + hneg ponet -1/bar=49.5 in <br />(Astb+Asip) ·4 -2.4 inCneg 0·85•f'c·Wbeam <br />aneg:=B Cneg=2 in <br />*A/1-71,leg:= 0 ' (Asb + Asip) 'fv. dneg =655 kip·ft2 <br />01\471:= 01\/Inneg t *\Unpos= 2177 kip ·ft Total Factored Moment Resistance <br />at a typical beam-column moment <br />1 <br />Maximum Factored Moment Demand from Ground Motions: <br />At:=961·kip·ft <br />if *A/In>2·Adz,=="OK"Total Factored Moment Resistance exceeds total <br />Moment Demand at a typical beam-column moment <br />"OK"frame node, OK. <br />else <br />1 H*VG" <br />PERIMETER BEAM DEMANDS GENERALLY DECREASE UP THE HEIGHT OF THE TOWER. LRFD MOMENT <br />DEMANDS FOR PERIMETER L4 BEAMS (L3 BEAM/PANEL ASSEMBLIES ARE ATYPICAL AND EXEMPTED) <br />UNDER ALL DIRECTIONAL PERMUTATIONS AND GROUND MOTIONS ARE EXPORTED TO EXCEL. THE 20 <br />PERIMETER BEAMS EXPERIENCING THE HIGHEST DEMANDS ARE LISTED BELOW. <br />Descending <br />Rank <br />Maximum Factored Governing <br />Beam ID <br />Moment Demand Combination <br />1 B280 961 It-ft 72yr NR c <br />2 8306 953 k-ft 72yr NR c <br />3 8288 928 k-ft 72yr NR c <br />4 8314 926 k-ft 72yr NR c <br />5 8313 923 k-ft 72yr NR d <br />6 B287 911 k-ft 72yr NR d <br />7 8468 839 k-ft 72yr NR a <br />8 B389 829 k-ft 72yr NR b <br />9 8462 829 k-ft 72yr NR a <br />10 B388 827 k-ft 72yr NR b <br />11 B466 824 k-ft 72yr NR b <br />12 8383 823 k-ft 72yr NR a <br />13 B449 814 k-ft 72yr CC a <br />14 8182 797 k-ft 72yr NR d <br />15 8326 769 k-ft 72yr NR b <br />16 8278 768 k-ft 72yr NR c <br />17 8294 759 k-ft 72yr NR d <br />18 B451 681 k-ft 72yr NR a <br />19 8381 675 k-ft 72yr NR b <br />20 8304 669 k-ft 72yr NR c <br />)Rev. 10/2/2018 <br />1