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

The correct answer is: A. 3.5 m or less

A couple roof is a type of roof that is

supported by a pair of rafters. The rafters are connected to the ridge board at the top and to the wall plates at the bottom. The couple roof is a simple and economical type of roof that is often used for small buildings.

The span of a roof is the distance between the two walls that support it. The couple roof is typically used for spans of 3.5 m or less. This is because the rafters are not strong enough to support a longer span.

If you need to cover a larger span, you will need to use a different type of roof, such as a truss roof or a gable roof.

Here is a brief explanation of each option:

• Option A: 3.5 m or less. This is the correct answer. The couple roof is typically used for spans of 3.5 m or less.
• Option B: 3.5 m but less than 5 m. This is not the correct answer. The couple roof is typically used for spans of 3.5 m or less.
• Option C: 5 m but
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  less than 6.5 m. This is not the correct answer. The couple roof is typically used for spans of 3.5 m or less.
• Option D: 6.5 m but less than 8 m. This is not the correct answer. The couple roof is typically used for spans of 3.5 m or less.