Couple roof is used for spans
A. 3.5 m or less
B. 3.5 m but less than 5 m
C. 5 m but less than 6.5 m
D. 6.5 m but less than 8 m
Answer: Option C
Solution (By Examveda Team)
A couple roof is a type of roof framing system commonly used for spans within a specific range. In the context of this question, the correct option is5 m but less than 6.5 m. This means that a couple roof is suitable for spans that are at least 5 meters but less than 6.5 meters.Couple roofs are characterized by having rafters leaning against each other at the ridge. They are well-suited for moderate spans and provide a stable and economical roof structure.
Therefore, in the context of the question, a couple roof is used for spans within the range of 5 m to less than 6.5 m

Couple-close Roof: Used for spans up to 4.2 to 4.5 meters. It connects the lower ends of the rafters with a wooden tie beam to stop the walls from spreading.
Collar Beam Roof: Used for spans up to 4.5 to 6 meters, featuring a raised horizontal tie or collar between the rafters to provide stability.
Correct ans is option A...Bcz it is upto 3.5m in khurmi which means 3.5m or less
the correct answer as per the Civil engineering by Khurmi is B which is 3.5m
in reference to books option B is correct