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<br />BOTAS ENGINEERING, INC. <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, Fl33126 <br /> <br />Calculated by DBC Date 5/2010 <br />Checked by PMB Date 5/2010 <br /> <br />~ I :~ [{ Ie < 4000psl ,0.85.[ 0.85 - 0.05. ('e ~:SI) ]]} I <br />~:= 0.9 <br />0.85 . fc (J 2 . Mu ) <br />P t'= . I - l- <br />ac' fy O.85.fc.~.d.b <br />'_ . (0.85' pI. fc. 87000 pSI ) <br />Pmax .- 0.75 <br />fy 87000pSI + fy <br /> <br />Distance from exterior compressive liber to <br />centroid of tensional reinforcement : <br /> <br />d := dt - O.5dr - cov <br /> <br />Factor pi: <br /> <br />ReSistance factor <br /> <br />Remforcement ratio : <br /> <br />MaXimum remforcmg ratio: <br /> <br /> <br />= 0.77 <br /> <br />Pact = 0.00 13 <br /> <br />Pmax = 0.02G8 <br /> <br />Max. remforcement checking : <br /> <br />MaxRelnfCheck := If( Pact < P "OK" "error") '~."."~~.'.'~.<.r.n1C <br />max" K,v~'&;?;:i4*~tM":"{:-~ <br /> <br /> <br />Area of Steel needed : <br /> <br />As := Pact' d <br /> <br />[ 3 . yfc . pSI <br />Mm. steel area: Asm,n:= If fy > <br /> <br />200 . pSI 3. yfc . pSI 200 . pSI ] <br />fy , fy. (d)- J ' fy. (d)- I <br /> <br />Remf. steel Asteel:= If[ As < Asmln, (If( As. I .33 < Asmm, As. J .33 , Asmln)) , As] <br />required : <br /> <br />Rebar's size : <br /> <br />Rebars spancmq : <br /> <br />spcs := ( Abar) <br />Asteel <br /> <br />2 <br />In <br />As = 0.09- <br />ft <br /> <br />2 <br />In <br />ASmm = 0.25- <br />ft <br /> <br /> <br />Main Reinf. --> #5@12" o.c. <br /> <br />4.2. I . Deflection Checking : <br /> <br />Modulus of elasticity of concrete : <br />Modulus of elasticity of steel : <br /> <br />Ec := 57000 . yfc . pSI <br /> <br />Ec = 4227 KsI <br />Es := 29000 KsI <br /> <br />Modular ratio : <br /> <br />n := Es. Ec - J <br /> <br />fr := 7.5 . yfc. pSI <br />MA := (MDL + MLL)' ft <br /> <br />MA = 3.4 Kip . ft <br /> <br />n = G.8G <br /> <br />Modulus of rupture of concrete : <br /> <br />MaXimum moment m member @ <br />stage deflection IS computed : <br /> <br />fr = SSG pSI <br /> <br />68 <br />