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04-11-2017
Mathematics

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of building code regulation which requires that the slope of the riser to the tread of a staircase be 60% with an absolute deviation of 10%. Find the maximum and minimum slopes of the staircase.

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04-11-2017

10% either side of 60% (about 31°) makes the minimum slope 54% (about 28°) and the maximum slope 66% (about 33°).

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