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fiLochsa Po Sheet: <br /> ngineerir, Project: Everett Job No.: 154191 <br /> xavatix,7e.38S-9312 Co:6raao:{726)6444246 Date: 2/14/2018 <br /> Idaho:(2e8I 112.716? Adana 4587)7l.t-o4C, <br /> 3rd Floor Engineer: S.H. <br /> Chord Design at PT <br /> ACI 318-14 Section 12.5 <br /> Diaphragm moment M = 41805 k-ft <br /> Slab thickness t= 12 in <br /> Slab depth d = 118.75 ft <br /> Section modulus S= 4E+06 in3 tdz <br /> S = 6 <br /> Usable compression for seismic design P= 4.8 k/ft <br /> One foot wide area of compression force A= 144 in2 <br /> M P <br /> Tensile bending stress ft= 0.0902 ksi ft = S A <br /> Concrete compressive strength f'c= 5000 psi <br /> Maximum allowable bending stress=rupture stress fr= 0.5303 ksi fr = 7.5 f'; <br /> No additional chord reinforcement required <br /> Lochsa Engineering www.lochsa.com 1-866-606-VJ1/M12 <br />