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Discussion :: Building Construction

  1. Sum of tread and rise must lie between

    2. A.

     300 to 350 mm
    B.

     400 to 450 mm
    C.

     500 to 550 mm
    D.

     600 to 650 mm

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    Workspace

    View Answer

    Answer : Option B

    Explanation :

    Explanation Not Provided

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