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CITY OF SANTA ANA <br />Planning and Building Agency <br />Project Number: 251214 HOAG MEMORIAL <br />Approved <br />15. ROLL FORMED BRACE ANALYSIS - H #1 CE <br />15.1 SUMMARY <br />asterID: <br />Status: Pass ate: <br />Unity Ratio: 41.44% <br />2 <br />Governing LC <br />(0.9 - 0.2SDS)D + (0.9 - 0.2Sps)0.67PrfP + / - pE <br />Brace Length, L: 42 in <br />P, 1.3755 kips <br />t <br />T, 0 kips <br />SECTION PROPERTIES <br />OtTn 13.7962 kips (0%) <br />H (in) <br />1.5 <br />0cP1 3.3194 kips (41.44%) <br />W (in) <br />1.5 <br />Lip (in) <br />0.25 <br />15.2 DESIGN TENSION STRENGTH <br />t (in) <br />0.0598 <br />0.90 <br />sty = � �tr = 0.75 <br />Rout (in) <br />0.1794 <br />OtyTn = OtyAgFy = 14.0085 kips > 0 kips OK <br />Rin (in) <br />0.1196 <br />OtrTn= A - 13.7962 kips > 0 kips OK <br />tynFu- P p <br />Rcent (in) <br />0.1495 <br />Ag (in2) <br />0.283 <br />15.3 NOMINAL BUCKLING STRESS <br />Ix (in4) <br />0.108 <br />Kx=1, Ky=1, Kt=0.8 <br />S. (in3) <br />0.144 <br />Lx = 42, Ly = 42, Lt = O <br />R. (in) <br />0.62 <br />S = 1 - (xo/ro)2 = 0.2821 <br />ly (in a) <br />0.076 <br />Sy (in3) <br />0.1288 <br />at = 1 - Ar2 G J + n 2 EC 2 = 20.7172 <br />o (KtLt) <br />Ry (in) <br />0.52 <br />Determine elastic buckling stress, Fe <br />Yb (in) <br />0.75 <br />n2E <br />Fy (ksi) <br />55 <br />Fex = aex = � (Kx i-x/rx ) = 63.4463 ksi <br />F. (ksi) <br />65 <br />n 2 E <br />E (ksi) <br />29,500 <br />Fey = aey = 2 = 44.6303 ksi <br />(KyLy/ry) <br />G (ksi) <br />11,300 <br />1 <br />1 I(o.x + at) - (aex + at)2 - 4SaeXat1 = 16.534 ksi CONTROLS <br />Fet = <br />J (in°)0.0003 <br />2S <br />P <br />0.3 <br />AC = Fy/Fet = 1.8239 > 1.5 <br />Fn = rOTc27] Fy = 14.5003 ksi <br />L <br />15.4 DESIGN COMPRESSION STRENGTH <br />0, = 0.85 <br />Acorner = 0.5ntrcent = 0.014 <br />Ae = 4Acorner + tbw + 2t (bf + ds) = 0.2693 <br />OcPn = 0cAeFn = 3.3194 kips > 1.3755 kips OK <br />Made by OneRack 20 <br />