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The number of treads in a flight is equal to _________

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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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Question is from Structural Designing and Thumb Rules in division Valuation, Reports Technical and Design Data of Civil Engineering Drawing

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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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