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Thornton Tomasetti 224 of 234 <br />PMM AXIAL-BIAXIAL FLEXURE MAXIMUM DCR RATIOS 72YR (50%/50YR) <br />GROUND MOTIONS, <br />SPIRAL-REINFORCED COLUMNS ONLY COMPARE WITH PG. 15 <br />Dampers acting at design parameters, fc=3365psi (mean - 1std dev), Grade 60 Vertical Bars, <br />phi=1.0(per ASCE41) <br />Z Z <br />4 + <br />£ 2 N 2 0,00 2 <br />'r . ..r . <br />[t] ch Ib di Ib di di ct] dz] ct]Ii:]ct][b cir][t][i][bdlcbdl <br />GROUND MOTION #1 -CHRISTCHURCH 2011 GROUND MOTION #2 -DARFIELD 2010 <br />Z Z <br />4 4 <br />(D <br />In <br />ci=]ci=]cild][ilcilcilciz]cb di ch ch ob cb cbdi It] <br />GROUND MOTION #3 - KOCAEL/ 1999 GROUND MOTION #4 -NORTHRIDGE 1994 <br />SOUTH ELEVATION