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<br />BOTAS ENGINEERING, INC. <br /> <br />- <br /> <br />Job Sunny Isles Restaurant <br /> <br />- <br />Sheet No. of <br /> <br />Consulting Engineers <br /> <br />Patricia M. Botas - Florida License # 41829 <br />7875 NW 12th Street, Suite 120 - Miami, FL 33126 <br /> <br />Calculated by DBC Date 5/2010 <br /> <br />Checked by PMB Date 5/2010 <br /> <br />[ [ [ (fC - 4000PSI)]] <br />pi := If fc < 4000pSI ,0.85, 0.85 - 0.05' pi <br />1000pSI J <br />~:= 0.9 <br /> <br />0.85 . fc (J 2 . Mu J <br />P t'= . 1 - l- <br />ac' fy 0.85. fc. ~ . d. b <br /> <br />'_ . (0.85 . pI. fc. 87000 pSI ) <br />Pmax .- 0.75 <br />fy 87000 pSI + fy <br /> <br />Factor pi: <br /> <br />Resistance factor <br /> <br />Reinforcement ratio : <br /> <br />Maximum remforclng ratio: <br /> <br />Max. remforcement checkmg: MaxRemfCheck:= If( Pact < P max' "OK" , "error" ) kc,,@ <br /> <br />Area of Steel needed : As := Pact' d <br /> <br />[ 3 . yfc . pSI 200 . pSI 3, yfc . pSI 200 . pSI ] <br />Mm. steel area: Asmln:= If > , , <br />fy fy fy. (d)- I fy. (df I <br /> <br />Relnf. steel Asteel:= If[ As < Asmm, (If( As. I .33 < Asmm, As. I .33 , Asmm)) , As] <br />required: <br /> <br />Rebar's size : <br /> <br />Rebars spancmg : <br /> <br />( Abar ) <br />SpCs:= - <br />Asteel <br /> <br />= 0.77 <br /> <br />Pact = 0.0018 <br /> <br />Pmax = 0.02G8 <br /> <br /> <br />emf Check! = "0 <br /> <br />2 <br />m <br />As = 0.12- <br />ft <br /> <br />2 <br />m <br />ASmm = 0.25- <br />ft <br /> <br /> <br />Main Reinf. --> #5@12" o.c. <br /> <br />4.2. I . Deflection Checkmq : <br /> <br />Modulus of elasticity of concrete : <br /> <br />Ec := 57000. yfc. pSI <br /> <br />Ec = 4227 KsI <br /> <br />Modulus of elasticity of steel : <br /> <br />Es := 29000KsI <br /> <br />Modular ratio : <br /> <br />n := Es. Ec - I <br /> <br />fr := 7.5 . yfc. pSI <br /> <br />fr = 55G pSI <br /> <br />n = G.8G <br /> <br />Modulus of rupture of concrete : <br /> <br />Maximum moment In member @ <br />stage deflection IS computed : <br /> <br />MA := (MDL + MLL)' ft <br /> <br />MA = 4.8Klp' ft <br /> <br />74 <br />