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DEWALT DESIGN ASSIST 1.7.6.0 Page 5 <br />10010 - Collectors Column Base <br />8/6/2025 <br />Reference10.Design Proof Tension Loading <br />Steel Strength <br />ACI 318-19 17.6.1 <br />φ <br />Variables <br />N sa (lb) <br />5455.000 0.75 <br />=φN sa <br />Results <br />4091.0 lb Table 17.5.2 <br />=N ua <br />Utilization = <br />lb1074.9 <br />26.3% <br />ACI 318-19 17.6.2 <br />Concrete Breakout Strength <br />Equations <br />Eqn. 17.6.2.1bNcbg = ( A Nc / A Nc0 ) . Ψ ec,N . Ψ ed,N . Ψ c,N . Ψ cp,N . N b <br />N b = k c . λ a . ( f'c )0.5 . h ef1.5 Eqn. 17.6.2.2.1 <br />Variables <br />A Nc0 (in²)Ψ ed,N Ψ c,N Ψ cp,NANc(in²)Ψ ec,N <br />1.000 1.000 1.00072.000 36.000 1.000 <br />h ef (in)(in)c ac k c λ a (psi)f'c <br />2.006.500 17.000 1.000 3000 <br />N b (lb)φ φs eis <br />2633.630 0.65 0.750 <br />φN cbg <br />Results <br />=lb2568 Table 17.5.2 <br />N ua =lb2150.0 <br />Utilization =83.7% <br />Input data and results must be checked for agreement with the existing conditions, the standards and guidelines and must be checked for plausibility <br />Page 9.5