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Structural Concrete - Hassoun

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Problems 151<br />

Figure 3.41 Problem 3.9.<br />

3.14 Calculate the design moment strength of a T-section that has the following dimensions:<br />

• Flange width = 30 in. (750 mm)<br />

• Flange thickness = 3in.(75mm)<br />

• Web width = 10 in. (250 mm)<br />

• Effective depth (d) = 18 in. (450 mm)<br />

• Tension reinforcement: six no. 8 bars (6 × 25 mm)<br />

• f ′ c = 3ksi(20MPa)<br />

• f y = 60 ksi (400 MPa)<br />

3.15 Repeat Problem 3.14 if d = 24 in. (600 mm).<br />

3.16 Repeat Problem 3.14 if the flange is an inverted L shape with the same flange width projecting from one<br />

side only. (Neglect lack of symmetry)

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