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  1. If the loss of prestress is excessive resulting in tensile cracks, which method should be used?

    2. A.

     Preloading method
    B.

     Hollow method
    C.

     Transparent method
    D.

     Layered method

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    Answer : Option A

    Explanation :

    Preloading methods should be considered in making concrete repairs if the loss of prestress is excessive resulting in tensile cracks. This is done in order to restore the equivalent full or partial prestress effect, as per original designs.

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