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<br />BOT AS ENGINEERING, INC. <br /> <br />Job Sunny Isles Restaurant <br /> <br />Consulting Engineers <br /> <br />- <br />Sheet No. of <br /> <br />Patricia M. Botas - Florida license # 41829 <br />7875 NW 12th Street, Suite 120 - Miami, Fl33126 <br /> <br />Calculated by DBC Date 5/2010 <br /> <br />Checked by PMB Date 5/2010 <br /> <br />Flexure Design-Top Reinforcement <br /> <br />Diameter of proposed top lonqltudlnal reinforcement : <br />Bar := G dr:= Bar. 8- IIn dr = 0.8 In <br /> <br />2 <br />Abar := 0.0/220 (Bar In) <br /> <br />2 <br />Abar = 0.44 In <br /> <br />Distance from exterior compressive fiber to <br />centroid of tensional reinforcement : <br /> <br />d := dt - 0.5dr- dst - cov <br /> <br />Factor ~ I : <br /> <br />( fc - 4KsI) <br />P I := If fc < 4KsI ,0.85 ,0.85 - 0.05 . <br />1000pSI <br />$:= 0.9 <br /> <br />0.85 . fc ( 2 . MsupPU J <br />Pact := . I - 1- <br />fy 0.850 fc. $. b. d2 <br />0_ (0.85 . pI. fc 87000 pSI ) <br />Pmax .- 0.75 . . <br />fy 87KsI + fy <br /> <br />P I = 0.77 <br /> <br />ReSistance factor <br /> <br />Remforcement ratio : <br /> <br />Pact = 0.002G <br /> <br />MaXimum reinforcing ratio: <br /> <br />Pmax = 0.02G8 <br /> <br />Max. reinforcement checkm'3: MaxRelnfCheck:= If( Pact < P max' "OK" , "error" ) <br /> <br /> <br />Area of Steel needed : <br /> <br />As := Pact' b . d <br />[ 3 . yfc . pSI <br />Min. steel area: Asmln:= If fy > <br /> <br />200 . pSI 3. yfc 0 pSI <br />, - I <br />fy. (b . d) <br /> <br />2 <br />As = I .02 In <br />200. pSI J 2 <br />, _, ASmm = /.43 In <br />fy . (b 0 d) <br /> <br />fy <br /> <br />Reinforcement steel <br />to provide : <br /> <br />Asteel := If( As < Asmm, If( As. I .33 < Asmln, As. / .33 , ASmll J,s e "',' <br />:'i.,o;~tl,"...j;V{;,;,,:';; <br /> <br /> <br />No. of bars to provide <br /> <br />(Asteel) <br />n := cell - <br />Abar <br /> <br /> <br />Rebar's size : <br /> <br /> <br />Top Reinf. --> 4-#6 <br /> <br />54 <br />