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Structural Concrete - Hassoun

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11.12 Analysis and Design of Columns Using Charts 389<br />

k<br />

k<br />

Figure 11.17 Load–moment strength interaction diagram for rectangular columns<br />

where f<br />

c ′ = 5ksi, f y<br />

= 60 ksi, and (a) γ = 0.60, (b) γ = 0.70, (c) γ = 0.80, and (d) γ = 0.90.<br />

Courtesy of American <strong>Concrete</strong> Institute [7].

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