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21 January, 13:46

In levelling, the following staff readings were observed involving an inverted staff, A = 2.915 and B = - 2.028. What is the rise or fall from A to B (only enter numeric answer, no alpha) ?

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  1. 21 January, 13:51
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    The rise from A to B is 0.887

    Solution:

    As per the question:

    The following reading of an inverted staff is given as:

    A = 2.915

    B = - 2.028

    Here, for inverted staff, the greater reading shows greater elevation and lesser reading shows lower elevation.

    Thus

    The rise from A to B is given as:

    A - B = 2.915 - 2.028 = 0.887
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