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The number of treads in a flight is equal to _________(a) risers in the flight(b) risers plus one(c) risers minus one(d) risers plus three |
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Answer» Correct answer is (c) risers minus one Explanation: It is often not simply the sum of the individual tread lengths due to the nosing overlapping between treads. If there are N steps, the total run equals N-1 times the going: the tread of the last step is part of a landing and is not counted. |
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