Question

In ________________ roof, the common rafter slope upward from the opposite wall and they meet on a Ridge piece in the middle.

(a) Couple-close roof

(b) Lean-on roof

(c) Collar beam

(d) Couple

I had been asked this question in my homework.

The query is from Types of Pitched Roofs in section Roofing Materials of Construction & Building Materials

Answer 1

Right option is (d) Couple

The best explanation: In Couple roofs, the common rafters are firmly secured in position at both the ends, one in being on the ridge piece and the other on the wall plate. Such a roof is not very much favoured because it has the tendency to spread out at the feet.