# A.A 3-axle vehicle has a front axle load of 10 k, a drive axle of 28 k, and a rear (trailer) axle of

A.A 3-axle vehicle has a front axle load of 10 k, a drive axle of 28 k, and a rear (trailer) axle of 30 k, as shown below. The maximum bending moment (k-ft) produced by this truck on a 70-ft, simple span is most nearly: A. 750 B. 840 C. 920 D. 1,050 B.A floor system consists of a 5-in.-thick reinforced-concrete slab, built monolithically with concrete beams spaced 8 ft, as shown. The beams span 20 ft between simple supports. Use fc_ = 4,500 psi and fy = 60,000 psi. The service loads on the slab are:
A.A 3-axle vehicle has a front axle load of 10 k, a drive axle of 28 k, and a rear (trailer) axle of 30 k, as shown below. The maximum bending moment (k-ft) produced by this truck on a 70-ft, simple span is most nearly: A. 750 B. 840 C. 920 D. 1,050 B.A floor system consists of a 5-in.-thick reinforced-concrete slab, built monolithically with concrete beams spaced 8 ft, as shown. The beams span 20 ft between simple supports. Use fc_ = 4,500 psi and fy = 60,000 psi. The service loads on the slab are: Superimposed dead load = 40 lb/ft2; live load = 85 lb/ft2. The flexural reinforcement required (in.2/ft) at the critical section for positive moment is most nearly: A. 0.32 B. 0.21 C. 0.14 D. 0.11

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