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Question

A partially prestressed member is one in which

A
tensile stresses and cracking are permitted under service loads
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B
no tensile stresses are permitted under service loads
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C
mild steel is used in addition to prestressing steel
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D
tensile stresses are permitted but not cracking at service loads
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Solution

The correct option is A tensile stresses and cracking are permitted under service loads
In partially prestressed members, limited tensile stresses are permitted in concrete under service loads with control on the maximum width of cracks. The untensioned reinforcement is required in the cross-section for various reasons such as to resist differential shrinkage, temperature effects and handling stresses.

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