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DESIGN OF CONCRETE BEAMS - Horizontal Steel ACI3 s 002 <br />PROJECT: San Luis <br />Structure <br />COMPUTED BY: LLM <br />INPUT VALUES <br />fc = 4500 psi <br />fy = 60000 psi <br />Es = 29000 ksi <br />MEMBER I.D.: Tall Energy Dissipator Wall <br />MEMBER LOCATION: Point c <br />Date: 12/18/2015 <br />b = 12 in <br />D = 12 in <br />dcvr = 2 in <br />Mo = 6.9 k -ft :Unfactored Moment <br />Mu = 11 k -ft :Ref. ACI 350.9.2.8 <br />for environmental durability factor <br />CALCULATED VALUES (see ACI 318-02 Section 10.5 for Asmin) <br />Ec = <br />3865 ksi <br />n = <br />7.5 <br />d = <br />9.6875 in <br />B, = <br />0.83 <br />PmMMOR)= <br />0.0018 Asmin= 0.21 in` (max of 2 eqns) <br />Pm;n(AC > = <br />0.0018 <br />Pmax = <br />0.0197 Asmaz 2.293 in` <br />Pbai = <br />0.0311 <br />Preq = <br />0.0022 Asreq = 0.26 int <br />Calculated <br />Quadratic Coefficients <br />a 39333.33 <br />b -581250 <br />c 146666.7 <br />QTY <br />SIZE <br />Area <br />As pro <br />2 <br />#4 <br />0.20 <br />0.40 <br />1 <br />#5 <br />0.31 <br />0.31 <br />1 <br />#6 <br />0.44 <br />0.44 <br />1 <br />#7 <br />0.60 <br />0.60 <br />1 <br />#8 <br />0.79 <br />0.79 <br />1 <br />#9 <br />1.00 <br />1.00 <br />1 <br />#10 <br />1.27 <br />1.27 <br />0.07 Pbai <br />(1.33"Asfeq) = 0.34 in` Asmin= 0.21 in (min of Asmin or 1.33*Asreq) <br />----------> OK - Use Asreq <br />REBAR SPACING <br />ACI 318-02 Crack Control Provisions <br />INPUT --- > Selected Bar Size #5 <br />Qty of bars used = 1 <br />Calced Area of bar = 0.31 int <br />Values Clear Cover = 2.00 in <br />Aspro = 0.31 in` <br />P = 0.3% <br />Mo = 6.9 k -ft <br />k = 0.181 <br />j = 0.9397 in <br />fs = 29.3 ksi <br />S = 12 in <br />smax = 13 in <br />Use #5@12 in 12 inch deep beam. <br />CRACK CONTROL <br />Acomp = 55.50 int <br />Alt. Design Method <br />Maximum z Values <br />Exp. <br />Beam Slab <br />Int. <br />175 155 <br />Ext. <br />145 129 <br />Normal Severe <br />Env/Hydj <br />115 1 95 <br />ACI 318 <br />148.0 <br />ACI 3501 <br />148.0 <br />Normal: pH<5, Soluble sulfates<1000 ppm <br />