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Structural Concrete - Hassoun

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728 Chapter 19 Introduction to Prestressed <strong>Concrete</strong><br />

Figure 19.2<br />

(Continued)<br />

Stresses due to the live load L 1 = 900 lb/ft are<br />

M LL = 0.9(24)2<br />

8<br />

σ L1<br />

= 64.8K⋅ ft<br />

= 6M 6 × 64.8 × 12, 000<br />

= =±675 psi<br />

bh2 12(24) 2

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