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Cracks that lead to splitting along the reinforcement are kn…

Cracks that lead to splitting along the reinforcement are known as _______ cracks.

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A rectangular beam has a cross section of b = 14 in., h = 26…

A rectangular beam has a cross section of b = 14 in., h = 26 in., and d = 23.5 in. It is reinforced with four No. 5 Grade 60 bars. The concrete strength is 7,300 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the assumed modulus of elasticity of the concrete, Ec.

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A rectangular beam has a cross section of b = 16 in., h = 28…

A rectangular beam has a cross section of b = 16 in., h = 28 in., and d = 25.5 in. It is reinforced with four No. 6 Grade 60 bars. The concrete strength is 6,700 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the transformed cross-sectional area of the bars, Ast.

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A rectangular beam has a cross section of b = 16 in., h = 28…

A rectangular beam has a cross section of b = 16 in., h = 28 in., and d = 25.5 in. It is reinforced with two No. 5 Grade 60 bars. The concrete strength is 6,100 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the modulus of rupture of the concrete, fr.

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The fatigue strength of longitudinal bars is less than that…

The fatigue strength of longitudinal bars is less than that of stirrups.

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During serviceability calculations, it is common to ignore t…

During serviceability calculations, it is common to ignore the presence of compression reinforcement.

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The fatigue strength of concrete is not sensitive to stress…

The fatigue strength of concrete is not sensitive to stress concentrations.

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What happens once the crack pattern has stabilized and the m…

What happens once the crack pattern has stabilized and the member is loaded further?

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A rectangular beam has a cross section of b = 18 in., h = 22…

A rectangular beam has a cross section of b = 18 in., h = 22 in., and d = 19.5 in. It is reinforced with four No. 6 Grade 60 bars. The concrete strength is 4,300 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the cracking moment, Mcr.

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A rectangular beam has a cross section of b = 16 in., h = 26…

A rectangular beam has a cross section of b = 16 in., h = 26 in., and d = 23.5 in. It is reinforced with two No. 8 Grade 60 bars. The concrete strength is 5,500 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the transformed cross-sectional area of the bars, Ast.

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