Laserfiche WebLink
<br />- <br /> <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 />Checked by PMB Date 5/2010 <br /> <br />Calculation of Moment of Inertia of cracked section <br /> <br />Comp. Steel : <br /> <br />2 <br />Asc := I . Oln <br /> <br />2 <br />Asc = 0.00 In <br /> <br />Dlst. Old I"; d I := dt - d <br /> <br />d I = /.8 In <br /> <br />Parameter "B" : <br /> <br />2 2 <br />Ast := I . 0.3 Iln Ast = 0.3 / In <br />b - I (n - I) . Asc <br />B=G7.7ft Ratio: r:= r=O <br />n . Ast n . Ast <br /> <br />kd :=[J20dOBO(1 + rO:I)+(1 +r)2_(1 +rJ].B-kd = 101 In <br /> <br />B.- <br />.- <br /> <br />Tension Steel : <br /> <br />Moment of inertia of cracked <br />section transformed to concrete : <br /> <br />b . kd3 n . Ast (n - /) . Asc <br />+ + <br />3 (d - kd) - 2 ( kd - d I r 2 <br />Iq := b . dt3. I 2- I <br /> <br />4 <br />Ig = 2 I Gin <br /> <br />ICR := <br /> <br />4 <br />ICR = 25.57 In <br /> <br />Moment of inertia of gross concrete <br />section about centroldal aXIs : <br />(Neqlectmg reinforcement) <br /> <br />Distance from centroldal aXIs of <br />gross section, neglecting remf., <br />to extreme fiber In tension: <br /> <br />Yt := 0.5' dt <br /> <br />Yt = 3 In <br /> <br />Crackmg moment : <br /> <br />-I <br />MCR := fr. Ig . Yt <br /> <br />le:= (~~~3 ol~ +[ I -(~~R)1ICR <br /> <br />MCR = 3 KiP' ft <br /> <br />Effective moment of mertla : <br /> <br /> <br />Deflection due to Uniformly Distributed Loads <br /> <br />Uniformly Dlst. Service Load : <br /> <br />WServ := ( WDL.S + WLL.5) ft <br /> <br />4 <br />5 WServ' L <br />D I '--. <br />R.s ab.u .- 384 Ec. Ie <br /> <br />DTot := DR.slab.u <br /> <br />WServ = /40 plf <br /> <br /> <br />DTot = 0 In <br /> <br />Deflection : <br /> <br />L <br />- = a.33 In <br />3GO <br /> <br />> <br /> <br />DR.slab.u = 0.0055 In <br /> <br />= > Venncatlon OK <br /> <br />Slab Desio" Summary <br /> <br />Slab depth = G" <br />Main Relnf. at middle span locatlon--> #5@ I 211 o.c. ea. way (Bottom) <br />cover = 1.5" <br /> <br />66 <br />