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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, FL 33126 <br /> <br />Calculated by DBC Date 5/2010 <br />Checked by PMB Date 5/2010 <br /> <br />CalculatIon of Moment of mertla of cracked sectIon <br /> <br />Compo Steel: <br /> <br />2 <br />Asc := I . Oln <br /> <br />2 <br />Asc = 0.00 In <br /> <br />Dlst. "d I": d J := dt - d <br /> <br />d I = 2.3 In <br /> <br />Tension Steel : <br /> <br />2 2 <br />Ast:= I . 0.3 IIn Ast = 0.3 I In <br /> <br />Parameter "B" : <br /> <br />B:= <br /> <br />b <br />n. Ast <br /> <br />-I <br />B = 67.7ft <br /> <br />Ratio : <br /> <br />(n - I) . Asc <br />r := r = 0 <br />n. Ast <br /> <br />kd :~[J2'd'B'(1 + r':')+(1 +r)2_(1 +r)].B-kd ~ '.31n <br /> <br />Moment of mertla of cracked <br />section transformed to concrete : <br /> <br />ICR := <br /> <br />3 <br />b . kd n . Ast (n - I) . Asc <br />+ + <br />3 (d - kd) - 2 (kd - d I r 2 <br /> <br />4 <br />ICR = 49.69 In <br /> <br />Moment of Inertia of gross concrete <br />section about centroldal aXIs : <br />(Neglectmq remforcement) <br /> <br />Iq := b. dt3. 12- 1 <br /> <br />4 <br />1'21 = 5 I 2 In <br /> <br />Distance from centrOldal aXIs of <br />qross section, neglecting relnf., <br />to extreme fiber In tension : <br /> <br />Yt := 0.5 . dt <br /> <br />Yt = 4 In <br /> <br />Cracking moment : <br /> <br />-I <br />MCR := fr. 1'21 . Yt <br /> <br />MCR = GKlp' ft <br /> <br />Effective moment of inertia : <br /> <br />'e:~ (~~13 ,19 +[ 1 _(~~13] "eR <br /> <br /> <br />Deflection due to Uniformly Distributed Loads <br />Untformly Dlst. Service Load: wServ := (WDL.S + WLL.S)ft <br /> <br />WServ = 225 plf <br /> <br />4 <br />5 wServ' L <br />o '=-. <br />R.slab.u' 384 Ec. Ie <br /> <br />OTot := OR.slab.u <br /> <br />OTot = Oln <br /> <br />Deflectron : <br /> <br />L <br />- = 0.37 In <br />360 <br /> <br />> <br /> <br />OR.slab.u = 0.0' In <br /> <br />= > Venflcatron OK <br /> <br />Slab Desio" Summary <br /> <br />51ab depth = 811 <br />Main Relnf. at middle span locabon--> #5@ 12" o.c. ea. way (Bottom) <br />cover = 2.011 <br /> <br />69 <br />