Couple roof is used for spans

3.5 m or less

3.5 m but less than 5 m

5 m but less than 6.5 m

Answer

6.5 m but less than 8 m

Answer: Option C

Solution

Answer: Option C

Solution:

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 is 5 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