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__________________ roof is just similar to a couple roof except that the legs of the common after are connected by tie beam.

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__________________ roof is just similar to a couple roof except that the legs of the common after are connected by tie beam.

(a) Collar and scissor

(b) Collar beam

(c) Couple-close

(d) Couple

The question was posed to me in semester exam.

The above asked question is from Types of Pitched Roofs topic in division Roofing Materials of Construction & Building Materials

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Correct answer is (c) Couple-close

Explanation: In Couple-close beam, the tie beam prevents the tendency of rafter to spread out and thus the danger of overturning of the wall is avoided. The tie beam can also be used as a ceiling joists when required.

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