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Structural Concrete - Hassoun

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160 Chapter 4 Flexural Design of Reinforced <strong>Concrete</strong> Beams<br />

Figure 4.3 Example 4.2.<br />

h min = d + D 2 + 1.875<br />

(assume 1.5 in cover)<br />

= 25.5 + 1.138 + 1.875 = 27.94 in.<br />

2<br />

say, 28 in. (d = 25.5in.)<br />

The final cross section is shown in Fig. 4.3.<br />

Example 4.3<br />

Find the necessary reinforcement for a given section that has a width of 10 in. and a total depth of 20 in.<br />

(Fig. 4.4) if it is subjected to an external factored moment of 163 K⋅ft. Given: f c ′ = 4ksiandf y = 60 ksi.<br />

Figure 4.4 Example 4.3.

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